Form 10-Q - Quarterly report [Sections 13 or 15(d)]

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2024

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

for the transition period from to

Commission File Number 001-38103

JANUS HENDERSON GROUP PLC

(Exact name of registrant as specified in its charter)

Jersey, Channel Islands
(State or other jurisdiction of
incorporation or organization)

98-1376360
(I.R.S. Employer
Identification No.)

201 Bishopsgate

London, United Kingdom
(Address of principal executive offices)

EC2M3AE
(Zip Code)

+44 (0) 20 7818 1818

(Registrant’s telephone number, including area code)

N/A
(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $1.50 Per Share Par Value	JHG	New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to the filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “non-accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large Accelerated Filer ☒ Accelerated Filer ☐ Non-Accelerated Filer ☐ Smaller Reporting Company ☐ Emerging Growth Company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

As of July 30, 2024, there were 159,264,003 shares of the registrant’s common stock, $1.50 par value per share, issued and outstanding.

Table of Contents

JANUS HENDERSON GROUP PLC

2024 FORM 10‑Q QUARTERLY REPORT

TABLE OF CONTENTS

		Page
PART I. Financial Information
Item 1.	Financial Statements (unaudited)	1
	Condensed Consolidated Balance Sheets	1
	Condensed Consolidated Statements of Comprehensive Income	2
	Condensed Consolidated Statements of Cash Flows	3
	Condensed Consolidated Statements of Changes in Equity	4
	Notes to the Condensed Consolidated Financial Statements	6
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	15
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	27
Item 4.	Controls and Procedures	27

PART II. Other Information
Item 1.	Legal Proceedings	28
Item 1A.	Risk Factors	28
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	28
Item 3.	Defaults Upon Senior Securities	28
Item 4.	Mine Safety Disclosures	28
Item 5.	Other Information	28
Item 6.	Exhibits	29
	Signatures	30

Table of Contents

PART I — FINANCIAL INFORMATION

Item 1. Financial Statements

JANUS HENDERSON GROUP PLC

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)

(U.S. Dollars in Millions, Except Share Data)

	*June 30,*			*December 31,*
	*2024*			*2023*
ASSETS
Current assets:
Cash and cash equivalents	$	1,013.9		$	1,152.4
Investments		258.0			334.2
Fees and other receivables		254.9			294.0
OEIC and unit trust receivables		157.6			94.6
Assets of consolidated VIEs:
Cash and cash equivalents		20.9			15.7
Investments		555.6			382.4
Other current assets		7.6			7.8
Other current assets		109.2			174.5
Total current assets		2,377.7			2,455.6
Non-current assets:
Property, equipment and software, net		39.3			44.2
Intangible assets, net		2,427.6			2,431.3
Goodwill		1,283.8			1,290.3
Retirement benefit asset, net		87.9			87.6
Other non-current assets		197.1			187.6
Total assets	$	6,413.4		$	6,496.6

LIABILITIES
Current liabilities:
Accounts payable and accrued liabilities	$	214.9		$	231.4
Current portion of accrued compensation, benefits and staff costs		198.6			297.9
OEIC and unit trust payables		164.4			98.5
Liabilities of consolidated VIEs:
Accounts payable and accrued liabilities		9.0			3.2
Total current liabilities		586.9			631.0

Non-current liabilities:
Accrued compensation, benefits and staff costs		23.7			45.0
Long-term debt		303.1			304.6
Deferred tax liabilities, net		569.4			570.8
Retirement benefit obligations, net		2.3			2.3
Other non-current liabilities		106.5			87.4
Total liabilities		1,591.9			1,641.1

Commitments and contingencies (See Note 14)

REDEEMABLE NONCONTROLLING INTERESTS		346.7			317.2

EQUITY
Common stock, $1.50 par value; 480,000,000 shares authorized, and 159,643,633 and 163,338,035 shares issued and outstanding as of June 30, 2024, and December 31, 2023, respectively		239.5			245.0
Additional paid-in capital		3,675.4			3,722.3
Treasury shares, 40,439 and 41,444 shares held at June 30, 2024, and December 31, 2023, respectively		(1.1	)		(1.1	)
Accumulated other comprehensive loss, net of tax		(598.7	)		(563.6	)
Retained earnings		1,159.5			1,135.5
Total shareholders’ equity		4,474.6			4,538.1
Nonredeemable noncontrolling interests		0.2			0.2
Total equity		4,474.8			4,538.3
Total liabilities, redeemable noncontrolling interests and equity	$	6,413.4		$	6,496.6

The accompanying notes are an integral part of these condensed consolidated financial statements.

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JANUS HENDERSON GROUP PLC

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)

(U.S. Dollars in Millions, Except Per Share Data)

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Revenue:
Management fees	$	472.8		$	423.5		$	932.2		$	838.1
Performance fees		7.4			(5.9	)		(5.7	)		(20.8	)
Shareowner servicing fees		58.5			53.3			115.7			104.8
Other revenue		49.7			45.6			97.9			90.2
Total revenue		588.4			516.5			1,140.1			1,012.3
Operating expenses:
Employee compensation and benefits		166.3			147.7			332.1			288.0
Long-term incentive plans		36.4			37.6			86.8			93.1
Distribution expenses		126.6			114.6			249.0			226.6
Investment administration		12.8			11.1			25.0			22.7
Marketing		9.8			9.3			17.8			18.1
General, administrative and occupancy		66.9			72.2			135.5			133.3
Depreciation and amortization		5.3			6.1			10.4			12.2
Total operating expenses		424.1			398.6			856.6			794.0
Operating income:		164.3			117.9			283.5			218.3
Interest expense		(3.2	)		(3.2	)		(6.3	)		(6.3	)
Investment gains, net		6.4			6.9			28.9			24.5
Other non-operating income, net		7.6			7.0			42.2			14.1
Income before taxes		175.1			128.6			348.3			250.6
Income tax provision		(41.6	)		(28.2	)		(74.2	)		(54.2	)
Net income		133.5			100.4			274.1			196.4
Net income attributable to noncontrolling interests		(3.8	)		(10.6	)		(14.3	)		(19.2	)
Net income attributable to JHG	$	129.7		$	89.8		$	259.8		$	177.2

Earnings per share attributable to JHG common shareholders:
Basic	$	0.81		$	0.54		$	1.62		$	1.07
Diluted	$	0.81		$	0.54		$	1.62		$	1.07

Other comprehensive income (loss), net of tax:
Foreign currency translation	$	3.5		$	40.5		$	(20.1	)	$	85.0
Reclassification of foreign currency translation to net income		5.5			-			(16.5	)		-
Actuarial gains		0.4			0.1			0.8			0.2
Other comprehensive income (loss), net of tax		9.4			40.6			(35.8	)		85.2
Other comprehensive loss (income) attributable to noncontrolling interests		(0.4	)		1.6			0.7			(1.6	)
Other comprehensive income (loss) attributable to JHG	$	9.0		$	42.2		$	(35.1	)	$	83.6
Total comprehensive income	$	142.9		$	141.0		$	238.3		$	281.6
Total comprehensive income attributable to noncontrolling interests		(4.2	)		(9.0	)		(13.6	)		(20.8	)
Total comprehensive income attributable to JHG	$	138.7		$	132.0		$	224.7		$	260.8

The accompanying notes are an integral part of these condensed consolidated financial statements.

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JANUS HENDERSON GROUP PLC

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

(U.S. Dollars in Millions)

	*Six months ended*
	*June 30,*
	*2024*			*2023*
CASH FLOWS PROVIDED BY (USED FOR):
Operating activities:
Net income	$	274.1		$	196.4
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		10.4			12.2
Deferred income taxes		(0.2	)		1.0
Stock-based compensation plan expense		33.2			42.9
Reclassification of foreign currency translation to net income		(16.5	)		-
Investment gains, net		(28.9	)		(24.5	)
Other, net		(4.5	)		(3.4	)
Changes in operating assets and liabilities:
OEIC and unit trust receivables and payables		2.9			0.3
Other assets		70.5			15.0
Other accruals and liabilities		(122.2	)		(176.7	)
Net operating activities		218.8			63.2
Investing activities:
Sales (purchases) of:
Investments, net		(42.2	)		(79.2	)
Property, equipment and software		(3.7	)		(6.5	)
Investments by consolidated seeded investment products, net		(64.1	)		(163.0	)
Cash paid on settled seed capital hedges, net		(5.4	)		(9.3	)
Other, net		0.7			(0.1	)
Net investing activities		(114.7	)		(258.1	)
Financing activities:
Purchase of common stock for stock-based compensation plans		(80.4	)		(57.5	)
Purchase of common stock for the share buyback program		(115.4	)		-
Dividends paid to shareholders		(125.8	)		(129.3	)
Third-party capital invested into consolidated seeded investment products, net		91.3			201.6
Other, net		0.2			0.9
Net financing activities		(230.1	)		15.7
Cash and cash equivalents:
Effect of foreign exchange rate changes		(7.3	)		27.2
Net change		(133.3	)		(152.0	)
At beginning of period		1,168.1			1,176.4
At end of period	$	1,034.8		$	1,024.4
Supplemental cash flow information:
Cash paid for interest	$	7.3		$	7.3
Cash paid for income taxes, net of refunds	$	55.9		$	56.0
Reconciliation of cash and cash equivalents:
Cash and cash equivalents	$	1,013.9		$	996.9
Cash and cash equivalents held in consolidated VIEs		20.9			27.5
Total cash and cash equivalents	$	1,034.8		$	1,024.4

The accompanying notes are an integral part of these condensed consolidated financial statements.

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JANUS HENDERSON GROUP PLC

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (UNAUDITED)

(Amounts in Millions)

													*Accumulated*
							*Additional*						*other*						*Nonredeemable*
	*Number of*			*Common*			*paid-in*			*Treasury*			*comprehensive*			*Retained*			*noncontrolling*		*Total*
Three months ended June 30, 2024	*shares*			*stock*			*capital*			*shares*			*loss*			*earnings*			*interests*		*equity*
Balance at April 1, 2024		160.7		$	241.0		$	3,670.0		$	(1.1	)	$	(607.7	)	$	1,125.0		$	0.2	$	4,427.4
Net income		—			—			—			—			—			129.7			—		129.7
Other comprehensive income		—			—			—			—			3.5			—			—		3.5
Reclassification of foreign currency translation to net income		—			—			—			—			5.5			—			—		5.5
Dividends paid to shareholders ($0.39 per share)		—			—			—			—			—			(62.6	)		—		(62.6	)
Purchase of common stock for the share buyback program		(1.1	)		(1.5	)		—			—			—			(32.6	)		—		(34.1	)
Purchase of common stock for stock-based compensation plans		—			—			(10.2	)		(0.3	)		—			—			—		(10.5	)
Vesting of stock-based compensation plans		—			—			(0.3	)		0.3			—			—			—		—
Stock-based compensation plan expense		—			—			15.7			—			—			—			—		15.7
Proceeds from stock-based compensation plans		—			—			0.2			—			—			—			—		0.2
Balance at June 30, 2024		159.6		$	239.5		$	3,675.4		$	(1.1	)	$	(598.7	)	$	1,159.5		$	0.2	$	4,474.8

											*Accumulated*
					*Additional*						*other*						*Nonredeemable*
	*Number of*		*Common*		*paid-in*			*Treasury*			*comprehensive*			*Retained*			*noncontrolling*		*Total*
Three months ended June 30, 2023	*shares*		*stock*		*capital*			*shares*			*loss*			*earnings*			*interests*		*equity*
Balance at April 1, 2023		165.7	$	248.5	$	3,663.4		$	(1.1	)	$	(606.3	)	$	1,083.4		$	2.8	$	4,390.7
Net income		—		—		—			—			—			89.8			—		89.8
Other comprehensive income		—		—		—			—			42.2			—			—		42.2
Dividends paid to shareholders ($0.39 per share)		—		—		—			—			—			(64.6	)		—		(64.6	)
Purchase of common stock for stock-based compensation plans		—		—		0.3			(0.3	)		—			—			—		—
Vesting of stock-based compensation plans		—		—		(0.2	)		0.3			—			—			—		0.1
Stock-based compensation plan expense		—		—		21.3			—			—			—			—		21.3
Proceeds from stock-based compensation plans		—		—		2.3			—			—			—			—		2.3
Balance at June 30, 2023		165.7	$	248.5	$	3,687.1		$	(1.1	)	$	(564.1	)	$	1,108.6		$	2.8	$	4,481.8

The accompanying notes are an integral part of these condensed consolidated financial statements.

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JANUS HENDERSON GROUP PLC

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (UNAUDITED)

(Amounts in Millions)

													*Accumulated*
							*Additional*						*other*						*Nonredeemable*
	*Number of*			*Common*			*paid-in*			*Treasury*			*comprehensive*			*Retained*			*noncontrolling*		*Total*
Six months ended June 30, 2024	*shares*			*stock*			*capital*			*shares*			*loss*			*earnings*			*interests*		*equity*
Balance at January 1, 2024		163.3		$	245.0		$	3,722.3		$	(1.1	)	$	(563.6	)	$	1,135.5		$	0.2	$	4,538.3
Net income		—			—			—			—			—			259.8			—		259.8
Other comprehensive loss		—			—			—			—			(18.6	)		—			—		(18.6	)
Reclassification of foreign currency translation to net income		—			—			—			—			(16.5	)		—			—		(16.5	)
Dividends paid to shareholders ($0.78 per share)		—			—			0.1			—			—			(125.9	)		—		(125.8	)
Purchase of common stock for the share buyback program		(3.7	)		(5.5	)		—			—			—			(109.9	)		—		(115.4	)
Purchase of common stock for stock-based compensation plans		—			—			(79.7	)		(0.7	)		—			—			—		(80.4	)
Vesting of stock-based compensation plans		—			—			(0.7	)		0.7			—			—			—		—
Stock-based compensation plan expense		—			—			33.2			—			—			—			—		33.2
Proceeds from stock-based compensation plans		—			—			0.2			—			—			—			—		0.2
Balance at June 30, 2024		159.6		$	239.5		$	3,675.4		$	(1.1	)	$	(598.7	)	$	1,159.5		$	0.2	$	4,474.8

											*Accumulated*
					*Additional*						*other*						*Nonredeemable*
	*Number of*		*Common*		*paid-in*			*Treasury*			*comprehensive*			*Retained*			*noncontrolling*		*Total*
Six months ended June 30, 2023	*shares*		*stock*		*capital*			*shares*			*loss*			*earnings*			*interests*		*equity*
Balance at January 1, 2023		165.7	$	248.5	$	3,706.6		$	(8.3	)	$	(647.7	)	$	1,060.7		$	2.8	$	4,362.6
Net income		—		—		—			—			—			177.2			—		177.2
Other comprehensive income		—		—		—			—			83.6			—			—		83.6
Dividends paid to shareholders ($0.78 per share)		—		—		—			—			—			(129.3	)		—		(129.3	)
Purchase of common stock for stock-based compensation plans		—		—		(57.0	)		(0.5	)		—			—			—		(57.5	)
Vesting of stock-based compensation plans		—		—		(7.7	)		7.7			—			—			—		—
Stock-based compensation plan expense		—		—		42.9			—			—			—			—		42.9
Proceeds from stock-based compensation plans		—		—		2.3			—			—			—			—		2.3
Balance at June 30, 2023		165.7	$	248.5	$	3,687.1		$	(1.1	)	$	(564.1	)	$	1,108.6		$	2.8	$	4,481.8

The accompanying notes are an integral part of these condensed consolidated financial statements.

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JANUS HENDERSON GROUP PLC

NOTES TO THE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

Note 1 — Basis of Presentation

Basis of Presentation

In the opinion of management of Janus Henderson Group plc (“JHG,” “the Company,” “we,” “us,” “our” and similar terms), the accompanying unaudited condensed consolidated financial statements contain all normal recurring adjustments necessary to fairly state our financial position, results of operations and cash flows in accordance with accounting principles generally accepted in the United States of America (“GAAP”). Such financial statements have been prepared in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with GAAP are not required for interim reporting purposes and have been condensed or omitted pursuant to such rules and regulations. These financial statements should be read in conjunction with the annual consolidated financial statements and notes presented in our Annual Report on Form 10-K for the year ended December 31, 2023. Events subsequent to the balance sheet date have been evaluated for inclusion in the accompanying financial statements through the issuance date.

Recent Accounting Pronouncements

In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures,” to require disclosure of certain significant segment expenses. ASU 2023-07 is effective for our annual periods beginning January 1, 2024, and interim periods beginning January 1, 2025. We do not expect the adoption of this new guidance to have a material impact on the condensed consolidated financial statements.

In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” to expand the disclosure requirements for income taxes, specifically related to the rate reconciliation and income taxes paid. ASU 2023-09 is effective for our annual periods beginning January 1, 2025. We do not expect the adoption of this new guidance to have a material impact on the condensed consolidated financial statements.

Note 2 — Consolidation

Variable Interest Entities

Consolidated Variable Interest Entities

Our consolidated variable interest entities (“VIEs”) as of June 30, 2024, and December 31, 2023, include certain consolidated seeded investment products in which we have an investment and act as the investment manager. Third-party assets held in consolidated VIEs are not available to us or to our creditors. We may not, under any circumstances, access third-party assets held by consolidated VIEs to use in our operating activities or otherwise. In addition, the investors in these consolidated VIEs have no recourse to the credit of JHG.

Unconsolidated Variable Interest Entities

The following table presents the carrying value of investments included in our Condensed Consolidated Balance Sheets pertaining to unconsolidated VIEs as of June 30, 2024, and December 31, 2023 (in millions):

	*June 30,*		*December 31,*
	*2024*		*2023*
Unconsolidated VIEs	$	15.0	$	17.2

Our total exposure to unconsolidated VIEs represents the value of our economic ownership interest in the investments.

Voting Rights Entities

Consolidated Voting Rights Entities

The following table presents the balances related to consolidated voting rights entities (“VREs”) that were recorded in our Condensed Consolidated Balance Sheets, including our net interest in these products, as of June 30, 2024, and December 31, 2023 (in millions):

	*June 30,*			*December 31,*
	*2024*			*2023*
Investments	$	105.7		$	242.9
Cash and cash equivalents		28.6			6.5
Other current assets		0.6			21.6
Accounts payable and accrued liabilities		(1.3	)		(1.1	)
Total	$	133.6		$	269.9
Redeemable noncontrolling interests in consolidated VREs		(21.1	)		(100.9	)
JHG’s net interest in consolidated VREs	$	112.5		$	169.0

Third-party assets held in consolidated VREs are not available to us or to our creditors. We may not, under any circumstances, access third-party assets held by consolidated VREs to use in our operating activities or otherwise. In addition, the investors in these consolidated VREs have no recourse to the credit of JHG.

Our total exposure to consolidated VREs represents the value of our economic ownership interest in these seeded investment products.

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Unconsolidated Voting Rights Entities

The following table presents the carrying value of investments included in our Condensed Consolidated Balance Sheets pertaining to unconsolidated VREs as of June 30, 2024, and December 31, 2023 (in millions):

	*June 30,*		*December 31,*
	*2024*		*2023*
Unconsolidated VREs	$	57.6	$	9.9

Our total exposure to unconsolidated VREs represents the value of our economic ownership interest in the investments.

Note 3 — Investments

Our investments as of June 30, 2024, and December 31, 2023, are summarized as follows (in millions):

	*June 30,*		*December 31,*
	*2024*		*2023*
Current investments:
Seeded investment products:
Consolidated VIEs	$	555.6	$	382.4
Consolidated VREs		105.7		242.9
Unconsolidated VIEs and VREs		72.6		27.1
Separately managed accounts		44.1		44.1
Total seeded investment products		778.0		696.5
Investments related to deferred compensation plans		29.5		12.0
Other investments		6.1		8.1
Total current investments	$	813.6	$	716.6
Non-current investments:
Equity method investments		25.2		29.5
Total investments	$	838.8	$	746.1

Investment Gains, Net

Investment gains, net in our Condensed Consolidated Statements of Comprehensive Income included the following for the three and six months ended June 30, 2024 and 2023 (in millions):

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Seeded investment products and hedges, net	$	4.6		$	9.6		$	16.5		$	15.0
Third-party ownership interests in seeded investment products		3.8			10.6			14.3			19.2
Equity method investments		(2.1	)		(14.5	)		(3.5	)		(11.5	)
Other		0.1			1.2			1.6			1.8
Investment gains, net	$	6.4		$	6.9		$	28.9		$	24.5

Net unrealized gains (losses), excluding noncontrolling interests, on seeded investment products and associated derivative instruments still held at period end for the six months ended June 30, 2024 and 2023, are summarized as follows (in millions):

	June 30,
	2024		2023
Unrealized gains (losses), net	$	35.6	$	(2.4	)

Gains and losses attributable to third-party ownership interests in seeded investment products are noncontrolling interests and are not included in net income attributable to JHG.

Equity Method Investments

Our equity method investment includes a 49% interest in Privacore Capital (“Privacore”). Beginning on January 1, 2025, for a 60-day period, we have the right, but not the obligation, to cause Privacore to issue additional shares such that after issuance, we would own 99% of Privacore on a fully diluted basis in exchange for a cash capital contribution representing the fair market value of such additional shares. If the JHG option is exercised, we will have the right, but not the obligation, to purchase the remaining 1% equity interest in Privacore from the principals in exchange for the fair market value of such shares.

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Cash Flows

Cash flows related to our investments for the six months ended June 30, 2024 and 2023, are summarized as follows (in millions):

	Six months ended June 30,
	2024								2023
	Purchases			Sales,					Purchases			Sales,
	and			settlements and		Net			and			settlements and		Net
	settlements			maturities		cash flow			settlements			maturities		cash flow
Investments by consolidated seeded investment products	$	(103.5	)	$	39.4	$	(64.1	)	$	(204.8	)	$	41.8	$	(163.0	)
Investments		(114.8	)		72.6		(42.2	)		(143.2	)		64.0		(79.2	)

Note 4 — Derivative Instruments

Derivative Instruments Used to Hedge Seeded Investment Products

We maintain an economic hedge program that uses derivative instruments to mitigate against market exposure of certain seeded investments by using index and commodity futures (“futures”), total return swaps and credit default swaps. Certain foreign currency exposures associated with our seeded investment products are also hedged by using foreign currency forward contracts.

We were party to the following derivative instruments as of June 30, 2024, and December 31, 2023 (in millions):

	*Notional value*
	*June 30, 2024*		*December 31, 2023*
Futures	$	532.5	$	1,018.0
Credit default swaps		147.8		199.7
Total return swaps		70.7		51.8
Foreign currency forward contracts		249.1		176.2

The derivative instruments are not designated as hedges for accounting purposes. Changes in fair value of the derivatives are recognized in investment gains, net in our Condensed Consolidated Statements of Comprehensive Income. The changes in fair value of the derivative instruments for the three and six months ended June 30, 2024 and 2023, are summarized as follows (in millions):

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Futures	$	2.9		$	3.6		$	(5.8	)	$	(3.1	)
Credit default swaps		(0.1	)		(0.6	)		(1.5	)		(2.5	)
Total return swaps		(1.3	)		(5.7	)		(5.9	)		(11.7	)
Foreign currency forward contracts and swaps		(1.8	)		4.3			0.9			8.8
Total gains (losses) from derivative instruments	$	(0.3	)	$	1.6		$	(12.3	)	$	(8.5	)

Derivative assets and liabilities are generally recognized on a gross basis and included in other current assets or in accounts payable and accrued liabilities in our Condensed Consolidated Balance Sheets. The derivative liabilities as of June 30, 2024, and December 31, 2023, are summarized as follows (in millions):

	*Fair value*
	*June 30, 2024*		*December 31, 2023*
Derivative liabilities	$	9.8	$	16.7

Derivative assets as of June 30, 2024, and December 31, 2023, were insignificant.

Derivative Instruments Used in Consolidated Seeded Investment Products

Certain of our consolidated seeded investment products use derivative instruments to contribute to the achievement of defined investment objectives. These derivative instruments are classified within other current assets or in accounts payable and accrued liabilities in our Condensed Consolidated Balance Sheets. Gains and losses on these derivative instruments are classified within investment gains, net in our Condensed Consolidated Statements of Comprehensive Income.

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Our consolidated seeded investment products were party to the following derivative instruments as of June 30, 2024, and December 31, 2023 (in millions):

	*Notional value*
	*June 30, 2024*		*December 31, 2023*
Futures	$	136.7	$	1,555.1
Credit default swaps		3.1		13.2
Foreign currency forward contracts and swaps		139.0		135.3

As of June 30, 2024, and December 31, 2023, the derivative assets and liabilities in our Condensed Consolidated Balance Sheets were insignificant.

Derivative Instruments — Foreign Currency Hedging Program

We maintain a foreign currency hedging program to take reasonable measures to minimize the income statement effects of foreign currency remeasurement of monetary balance sheet accounts. The program uses foreign currency forward contracts and swaps to achieve its objectives, and it is considered an economic hedge for accounting purposes.

The notional value of the foreign currency forward contracts and swaps as of June 30, 2024, and December 31, 2023, is summarized as follows (in millions):

	Notional value
	June 30, 2024		December 31, 2023
Foreign currency forward contracts and swaps	$	42.2	$	65.3

The derivative assets and liabilities are generally recognized on a gross basis and included in other current assets or in accounts payable and accrued liabilities in our Condensed Consolidated Balance Sheets. As of June 30, 2024, and December 31, 2023, the derivative assets and liabilities were insignificant.

Changes in fair value of the derivatives are recognized in other non-operating income, net in our Condensed Consolidated Statements of Comprehensive Income. Foreign currency remeasurement is also recognized in other non-operating income, net in our Condensed Consolidated Statements of Comprehensive Income. For the three and six months ended June 30, 2024 and 2023, the change in fair value of the foreign currency forward contracts and swaps was insignificant.

Note 5 — Fair Value Measurements

The following table presents assets and liabilities reflected in the financial statements or disclosed in the notes to the financial statements at fair value on a recurring basis as of June 30, 2024 (in millions):

	*Fair value measurements using:*
	*Quoted prices in*		*Significant*
	*active markets for*		*other*		*Significant*
	*identical assets*		*observable*		*unobservable*
	*and liabilities*		*inputs*		*inputs*
	*(Level 1)*		*(Level 2)*		*(Level 3)*		*Total*
Assets:
Cash equivalents	$	647.1	$	—	$	—	$	647.1
Current investments:
Consolidated VIEs		341.8		213.2		0.6		555.6
Other investments		223.6		34.4		—		258.0
Total current investments		565.4		247.6		0.6		813.6
Other		—		4.0		3.4		7.4
Total assets	$	1,212.5	$	251.6	$	4.0	$	1,468.1
Liabilities:
Long-term debt⁽¹⁾	$	—	$	298.3	$	—	$	298.3
Deferred bonuses		—		—		76.3		76.3
Other		2.4		11.2		—		13.6
Total liabilities	$	2.4	$	309.5	$	76.3	$	388.2

(1)	Carried at amortized cost in our Condensed Consolidated Balance Sheets and disclosed in this table at fair value.

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	*Fair value measurements using:*
	*Quoted prices in*		*Significant*
	*active markets for*		*other*		*Significant*
	*identical assets*		*observable*		*unobservable*
	*and liabilities*		*inputs*		*inputs*
	*(Level 1)*		*(Level 2)*		*(Level 3)*		*Total*
Assets:
Cash equivalents	$	894.4	$	—	$	—	$	894.4
Current investments:
Consolidated VIEs		317.6		64.7		0.1		382.4
Other investments		212.2		122.0		—		334.2
Total current investments		529.8		186.7		0.1		716.6
Other		—		8.5		1.0		9.5
Total assets	$	1,424.2	$	195.2	$	1.1	$	1,620.5
Liabilities:
Long-term debt⁽¹⁾	$	—	$	298.0	$	—	$	298.0
Deferred bonuses		—		—		117.6		117.6
Other		1.7		18.6		—		20.3
Total liabilities	$	1.7	$	316.6	$	117.6	$	435.9

(1)	Carried at amortized cost in our Condensed Consolidated Balance Sheets and disclosed in this table at fair value.

Level 1 Fair Value Measurements

Our Level 1 fair value measurements consist mostly of investments held by consolidated and unconsolidated seeded investment products and cash equivalents with quoted market prices in active markets. The fair value level of consolidated investments held by seeded investment products is determined by the underlying securities of the product. The fair value level of unconsolidated investments held in seeded investment products is determined by the net asset value, which is considered a quoted price in an active market.

Level 2 Fair Value Measurements

Our Level 2 fair value measurements consist mostly of investments held by consolidated investment products and our long-term debt. The fair value level of consolidated investments held by seeded investment products is determined by the underlying securities of the product. The fair value level of our long-term debt is determined using recent trading activity, which is considered a Level 2 input.

Level 3 Fair Value Measurements

Investments

As of June 30, 2024, and December 31, 2023, certain investments within consolidated VIEs were valued using significant unobservable inputs, resulting in Level 3 classification.

Deferred Bonuses

Deferred bonuses represent liabilities to employees over the vesting period that will be settled by investments in our products or cash. Upon vesting, employees receive the value of the investment product selected by the participant, adjusted for gains or losses attributable to the product. The significant unobservable inputs used to value the liabilities are investment designations and vesting periods.

Changes in Fair Value

Changes in fair value of our Level 3 liabilities for the three and six months ended June 30, 2024 and 2023, were as follows (in millions):

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Beginning of period fair value	$	59.0		$	60.0		$	117.6		$	46.5
Fair value adjustments		2.2			1.1			7.7			2.6
Vesting of deferred bonuses		(2.8	)		(1.1	)		(84.3	)		(34.3	)
Amortization of deferred bonuses		17.9			17.5			35.5			25.9
Foreign currency translation		—			0.7			(0.2	)		1.7
Additions		—			—			—			35.8
End of period fair value	$	76.3		$	78.2		$	76.3		$	78.2

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Nonrecurring Fair Value Measurements

Nonrecurring Level 3 fair value measurements include goodwill and intangible assets. We measure the fair value of goodwill and intangible assets on initial recognition using discounted cash flow analysis that requires assumptions regarding projected future earnings and discount rates. Because of the significance of the unobservable inputs in the fair value measurements of these assets, such measurements are classified as Level 3.

Note 6 — Goodwill and Intangible Assets

The following tables present activity in our intangible assets and goodwill balances during the six months ended June 30, 2024 and 2023 (in millions):

							*Foreign*
	*December 31,*						*currency*			*June 30,*
	*2023*			*Amortization*			*translation*			*2024*
Indefinite-lived intangible assets:
Investment management agreements	$	2,064.8		$	—		$	(3.3	)	$	2,061.5
Trademarks		360.0			—			—			360.0
Definite-lived intangible assets:
Client relationships		68.6			—			(0.9	)		67.7
Accumulated amortization		(62.1	)		(0.2	)		0.7			(61.6	)
Net intangible assets	$	2,431.3		$	(0.2	)	$	(3.5	)	$	2,427.6

Goodwill	$	1,290.3		$	—		$	(6.5	)	$	1,283.8

							Foreign
	*December 31,*						*currency*			*June 30,*
	*2022*			*Amortization*			*translation*			*2023*
Indefinite-lived intangible assets:
Investment management agreements	$	2,046.5		$	—		$	16.7		$	2,063.2
Trademarks		360.0			—			—			360.0
Definite-lived intangible assets:
Client relationships		68.9			—			1.6			70.5
Accumulated amortization		(60.7	)		(1.0	)		(1.7	)		(63.4	)
Net intangible assets	$	2,414.7		$	(1.0	)	$	16.6		$	2,430.3

Goodwill	$	1,253.1		$	—		$	34.2		$	1,287.3

Note 7 — Debt

Our debt as of June 30, 2024, and December 31, 2023, consisted of the following (in millions):

	*Carrying value*
	*June 30, 2024*		*December 31, 2023*
4.875% Senior Notes due 2025	$	303.1	$	304.6

4.875% Senior Notes Due 2025

The 4.875% Senior Notes due 2025 (“2025 Senior Notes”) have a principal value of $300.0 million as of June 30, 2024, pay interest at 4.875% semiannually on February 1 and August 1 of each year, and mature on August 1, 2025. The 2025 Senior Notes include unamortized debt premium, net at June 30, 2024, of $3.1 million, which will be amortized over the remaining life of the notes. The unamortized debt premium is recorded as a liability in long-term debt in our Condensed Consolidated Balance Sheets. JHG fully and unconditionally guarantees the obligations of Janus Henderson US (Holdings) Inc. in relation to the 2025 Senior Notes.

Credit Facility

On June 30, 2023, we entered into a new $200 million, unsecured, revolving credit facility (“Credit Facility”) and terminated our former Credit Facility as it was approaching its expiration date. The new Credit Facility includes an option for us to request an increase to our borrowing capacity under the Credit Facility of up to an additional $50.0 million. The new Credit Facility had a maturity date of June 30, 2028, with two one-year extension options that can be exercised at the discretion of JHG with the lender’s consent on the first and second anniversary of the date of the agreement. We exercised the option to extend the term of the Credit Facility on the first anniversary of the agreement. The revised maturity date of the Credit Facility is June 30, 2029. JHG and its subsidiaries may use the Credit Facility for general corporate purposes. The rate of interest for each interest period is the aggregate of the applicable margin, which is based on our long-term credit rating and the Secured Overnight Financing Rate (“SOFR”) in relation to any loan in U.S. dollars (“USD”), the Sterling Overnight Index Average (“SONIA”) in relation to any loan in British pounds (“GBP”), the Euro Interbank Offered Rate (“EURIBOR”) in relation to any loan in euros (“EUR”) or the Bank Bill Swap Rate (“BBSW”) in relation to any loan in Australian dollars (“AUD”). We are also required to pay a quarterly commitment fee on any unused portion of the Credit Facility, which is based on our long-term credit rating. If our credit rating falls below a certain threshold, as defined in the Credit Facility, our financing leverage ratio cannot exceed 3.00x EBITDA. At June 30, 2024, we were in compliance with all covenants in, and there were no borrowings under, the Credit Facility.

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Note 8 — Income Taxes

Our effective tax rates for the three and six months ended June 30, 2024 and 2023, were as follows:

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Effective tax rate		23.8	%		22.0	%		21.3	%		21.6	%

The effective tax rate for the three and six months ended June 30, 2024, compared to the same periods in 2023, was impacted by the release of accumulated foreign currency translation reserves that are treated as non-taxable for tax purposes during the period. In addition, the tax rate was impacted by the disallowed noncontrolling interest expense from seeded investment products.

As of June 30, 2024, we had $26.0 million of unrecognized tax benefits held for uncertain tax positions. We estimate the existing liability for uncertain tax positions could decrease by up to $6.5 million within the next 12 months without giving effect to changes in foreign currency translation.

The Organisation for Economic Co-operation and Development has a framework to implement a global minimum corporate tax of 15% for companies with global revenues and profits above certain thresholds (referred to as “Pillar 2”), with certain aspects of Pillar 2 effective January 1, 2024, and other aspects effective January 1, 2025. On June 20, 2023, Finance (No. 2) Act 2023 was substantively enacted in the UK, introducing a global minimum effective tax rate of 15%. The legislation implements a domestic top-up tax and a multinational top-up tax, effective for accounting periods starting on or after December 31, 2023. While it is uncertain whether the U.S. will enact legislation to adopt Pillar 2, certain countries in which we operate have adopted legislation, and other countries are introducing legislation to implement Pillar 2. As of June 30, 2024, the impact of Pillar 2 on our effective tax rate, consolidated results of operations, financial position and cash flows were not significant to the financial statements.

Note 9 — Noncontrolling Interests

Redeemable Noncontrolling Interests

Redeemable noncontrolling interests as of June 30, 2024, and December 31, 2023, consisted of the following (in millions):

	*June 30,*		*December 31,*
	*2024*		*2023*
Consolidated seeded investment products	$	346.7	$	317.2

Consolidated Seeded Investment Products

Noncontrolling interests in consolidated seeded investment products are classified as redeemable noncontrolling interests when there is an obligation to repurchase units at the investor’s request.

Redeemable noncontrolling interests in consolidated seeded investment products may fluctuate from period to period and are impacted by changes in our relative ownership, changes in the amount of third-party investment in seeded products and volatility in the market value of the seeded products’ underlying securities. Third-party redemption of investments in any particular seeded product is redeemed from the respective product’s net assets and cannot be redeemed from the net assets of our other seeded products or from our other net assets.

The following table presents the movement in redeemable noncontrolling interests in consolidated seeded investment products for the three and six months ended June 30, 2024 and 2023 (in millions):

	*Three months ended*					*Six months ended*
	*June 30,*					*June 30,*
	*2024*		*2023*			*2024*			*2023*
Opening balance	$	274.7	$	384.7		$	317.2		$	233.9
Changes in market value		3.8		10.6			14.3			19.2
Changes in ownership		67.8		(4.0	)		15.9			136.2
Foreign currency translation		0.4		(1.5	)		(0.7	)		0.5
Closing balance	$	346.7	$	389.8		$	346.7		$	389.8

Note 10 — Long-Term Incentive Compensation

The following table presents restricted stock and mutual fund awards granted during the three and six months ended June 30, 2024 (in millions):

	*Three months ended*		*Six months ended*
	*June 30,*		*June 30,*
	*2024*		*2024*
Restricted stock	$	1.7	$	56.9
Mutual fund awards		0.1		67.1
Total	$	1.8	$	124.0

Restricted stock and mutual fund awards generally vest and will be recognized using a graded vesting method over a three-year period.

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Note 11 — Retirement Benefit Plans

We operate defined contribution retirement benefit plans and defined benefit pension plans.

Our primary defined benefit pension plan is the defined benefit section of the Janus Henderson Group UK Pension Scheme (“JHGPS”).

Net Periodic Benefit Cost

The components of net periodic benefit cost in respect of defined benefit plans for the three and six months ended June 30, 2024 and 2023, include the following (in millions):

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Interest cost	$	(6.7	)	$	(6.9	)	$	(13.5	)	$	(13.7	)
Amortization of prior service cost		(0.1	)		(0.1	)		(0.2	)		(0.2	)
Amortization of net gain		(0.3	)		—			(0.6	)		—
Expected return on plan assets		6.5			6.8			13.4			13.4
Net periodic benefit cost	$	(0.6	)	$	(0.2	)	$	(0.9	)	$	(0.5	)

Note 12 — Accumulated Other Comprehensive Loss

Changes in accumulated other comprehensive loss, net of tax for the three and six months ended June 30, 2024 and 2023, were as follows (in millions):

	*Three months ended June 30,*
	*2024*									*2023*
				*Retirement*									*Retirement*
	*Foreign*			*benefit*						*Foreign*			*benefit*
	*currency*			*asset, net*			*Total*			*currency*			*asset, net*			*Total*
Beginning balance	$	(523.4	)	$	(84.3	)	$	(607.7	)	$	(536.0	)	$	(70.3	)	$	(606.3	)
Other comprehensive income		3.5			—			3.5			38.4			—			38.4
Reclassifications to net income⁽¹⁾		5.5			0.4			5.9			2.1			0.1			2.2
Total other comprehensive income		9.0			0.4			9.4			40.5			0.1			40.6
Less: other comprehensive loss (income) attributable to noncontrolling interests		(0.4	)		—			(0.4	)		1.6			—			1.6
Ending balance	$	(514.8	)	$	(83.9	)	$	(598.7	)	$	(493.9	)	$	(70.2	)	$	(564.1	)

	*Six months ended June 30,*
	*2024*									*2023*
				*Retirement*									*Retirement*
	*Foreign*			*benefit*						*Foreign*			*benefit*
	*currency*			*asset, net*			*Total*			*currency*			*asset, net*			*Total*
Beginning balance	$	(478.9	)	$	(84.7	)	$	(563.6	)	$	(577.3	)	$	(70.4	)	$	(647.7	)
Other comprehensive income (loss)		(20.1	)		—			(20.1	)		82.9			—			82.9
Reclassifications to net income⁽¹⁾		(16.5	)		0.8			(15.7	)		2.1			0.2			2.3
Total other comprehensive income (loss)		(36.6	)		0.8			(35.8	)		85.0			0.2			85.2
Less: other comprehensive loss (income) attributable to noncontrolling interests		0.7			—			0.7			(1.6	)		—			(1.6	)
Ending balance	$	(514.8	)	$	(83.9	)	$	(598.7	)	$	(493.9	)	$	(70.2	)	$	(564.1	)

(1) Reclassifications to net income are primarily related to the release of accumulated foreign currency translation reserves during the period in which a JHG entity liquidated.

The components of other comprehensive income (loss), net of tax for the three and six months ended June 30, 2024 and 2023, were as follows (in millions):

	*Three months ended June 30,*
	*2024*							*2023*
	*Pre-tax*		*Tax*			*Net*		*Pre-tax*		*Tax*			*Net*
	*amount*		*impact*			*amount*		*amount*		*impact*			*amount*
Foreign currency translation adjustments	$	3.6	$	(0.1	)	$	3.5	$	38.8	$	(0.4	)	$	38.4
Reclassifications to net income⁽¹⁾		5.9		—			5.9		2.2		—			2.2
Total other comprehensive income (loss)	$	9.5	$	(0.1	)	$	9.4	$	41.0	$	(0.4	)	$	40.6

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	*Six months ended June 30,*
	*2024*								*2023*
	*Pre-tax*			*Tax*		*Net*			*Pre-tax*		*Tax*		*Net*
	*amount*			*impact*		*amount*			*amount*		*impact*		*amount*
Foreign currency translation adjustments	$	(22.8	)	$	2.7	$	(20.1	)	$	80.3	$	2.6	$	82.9
Reclassifications to net income⁽¹⁾		(15.7	)		—		(15.7	)		2.3		—		2.3
Total other comprehensive income (loss)	$	(38.5	)	$	2.7	$	(35.8	)	$	82.6	$	2.6	$	85.2

(1) Reclassifications to net income are primarily related to the release of accumulated foreign currency translation reserves during the period in which a JHG entity liquidated.

Note 13 — Earnings and Dividends Per Share

Earnings Per Share

The following is a summary of the earnings per share calculation for the three and six months ended June 30, 2024 and 2023 (in millions, except per share data):

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Net income attributable to JHG	$	129.7		$	89.8		$	259.8		$	177.2
Allocation of earnings to participating stock-based awards		(3.2	)		(2.7	)		(5.6	)		(5.0	)
Net income attributable to JHG common shareholders	$	126.5		$	87.1		$	254.2		$	172.2

Weighted-average common shares outstanding — basic		155.6			160.5			156.5			160.4
Dilutive effect of nonparticipating stock-based awards		0.2			0.2			0.2			0.2
Weighted-average common shares outstanding — diluted		155.8			160.7			156.7			160.6

Earnings per share:
Basic	$	0.81		$	0.54		$	1.62		$	1.07
Diluted	$	0.81		$	0.54		$	1.62		$	1.07

Dividends Per Share

The payment of cash dividends is within the discretion of our Board of Directors and depends on many factors, including, but not limited to, our results of operations, financial condition, capital requirements, legal requirements and general business conditions.

The following is a summary of cash dividends declared and paid during the six months ended June 30, 2024:

*Dividend*		*Date*	*Dividends paid*		*Date*
*per share*		*declared*	*(in US$ millions)*		*paid*
$	0.39	January 31, 2024	$	63.2	February 28, 2024
$	0.39	May 1, 2024	$	62.6	May 29, 2024

On July 31, 2024, our Board of Directors declared a cash dividend of $0.39 per share for the second quarter 2024. The quarterly dividend will be paid on August 28, 2024, to shareholders of record at the close of business on August 12, 2024.

Note 14 — Commitments and Contingencies

Commitments and contingencies may arise in the normal course of business.

Litigation and Other Regulatory Matters

We are periodically involved in various legal proceedings and other regulatory matters.

Sandra Schissler v Janus Henderson US (Holdings) Inc., Janus Henderson Advisory Committee, and John and Jane Does 1-30

On September 9, 2022, a class action complaint, captioned Schissler v. Janus Henderson US (Holdings) Inc., et al., was filed in the United States District Court for the District of Colorado. Named as defendants are Janus Henderson US (Holdings) Inc. (“Janus US Holdings”) and the Advisory Committee to the Janus 401(k) and Employee Stock Ownership Plan (the “Plan”). The complaint purports to be brought on behalf of a class consisting of participants and beneficiaries of the Plan that invested in Janus Henderson funds on or after September 9, 2016. On January 10, 2023, in response to the defendants’ motion to dismiss filed on November 23, 2022, an amended complaint was filed against the same defendants. The amended complaint names two additional plaintiffs, Karly Sissel and Derrick Hittson. As amended, the complaint alleges that for the period September 9, 2016, through September 9, 2022, among other things, the defendants breached fiduciary duties of loyalty and prudence by (i) selecting higher-cost Janus Henderson funds over less expensive investment options, (ii) retaining Janus Henderson funds despite their alleged underperformance and (iii) failing to consider actively managed funds outside of Janus Henderson to add as investment options. The amended complaint also alleges that Janus US Holdings failed to monitor the Advisory Committee with respect to the foregoing. The amended complaint seeks various declaratory, equitable and monetary relief in unspecified amounts. On February 9, 2023, the defendants filed an amended motion to dismiss the amended complaint. On March 13, 2023, the plaintiffs filed an opposition to the amended motion to dismiss. The defendants filed their reply to the plaintiffs’ opposition on March 28, 2023. On September 7, 2023, a magistrate judge issued a report and recommendation, which recommended that the motion to dismiss be granted in part and denied in part. On September 21, 2023, the parties filed objections to the report and recommendation. Briefing on the parties’ objections concluded on October 12, 2023. On January 22, 2024, the district court judge adopted the magistrate judge’s report and recommendation and entered an order granting in part and denying in part Janus US Holdings’ motion to dismiss. Janus US Holdings believes that it has substantial defenses and intends to vigorously defend against these claims.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Forward-Looking Statements

Certain statements in this Quarterly Report on Form 10-Q not based on historical facts are “forward-looking statements” within the meaning of the federal securities laws, including the Private Securities Litigation Reform Act of 1995, as amended, Section 21E of the Securities Exchange Act of 1934, as amended (“Exchange Act”), and Section 27A of the Securities Act of 1933, as amended (“Securities Act”). Such forward-looking statements involve known and unknown risks and uncertainties that are difficult to predict and could cause our actual results, performance or achievements to differ materially from those discussed. These include statements as to our future expectations, beliefs, plans, strategies, objectives, events, conditions, financial performance, prospects or future events. In some cases, forward-looking statements can be identified by the use of words such as “may,” “could,” “expect,” “intend,” “plan,” “seek,” “anticipate,” “believe,” “estimate,” “predict,” “potential,” “continue,” “likely,” “will,” “would” and similar words and phrases. Forward-looking statements are necessarily based on estimates and assumptions that, while considered reasonable by us and our management, are inherently uncertain. Accordingly, you should not place undue reliance on forward-looking statements, which speak only as of the date they are made and are not guarantees of future performance. We do not undertake any obligation to publicly update or revise these forward-looking statements.

Various risks, uncertainties, assumptions and factors that could cause our future results to differ materially from those expressed by the forward-looking statements included in this Quarterly Report on Form 10-Q include, but are not limited to, changes in interest rates and inflation, volatility or disruption in financial markets, our investment performance as compared to third-party benchmarks or competitive products, redemptions and other withdrawals from the funds and accounts we manage, and other risks, uncertainties, assumptions and factors discussed in our Annual Report on Form 10-K for the year ended December 31, 2023, and this Quarterly Report on Form 10-Q under headings such as “Risk Factors,” “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and “Quantitative and Qualitative Disclosures About Market Risk,” and in other filings or furnishings made by the Company with the SEC from time to time.

Available Information

We make available free of charge our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q and Current Reports on Form 8-K and amendments thereto as soon as reasonably practicable after such filings have been made with the SEC. These reports may be obtained through our Investor Relations website (ir.janushenderson.com) and are available in print at no charge upon request by any shareholder. The contents of our website are not incorporated herein for any purpose. The SEC also maintains a website that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC at www.sec.gov.

Charters for the Audit Committee, Human Capital and Compensation Committee, Governance and Nominations Committee, and Risk Committee of our Board of Directors, as well as our Corporate Governance Guidelines, Code of Business Conduct and Code of Ethics for Senior Financial Officers (our “Senior Officer Code”) are posted on our Investor Relations website (ir.janushenderson.com) and are available in print at no charge upon request by any shareholder. Within the time period prescribed by the SEC and New York Stock Exchange (“NYSE”) regulations, we will post on our website any amendment to our Senior Officer Code or our Code of Business Conduct and any waivers thereof for directors or executive officers. The information on our website is not incorporated by reference into this report.

Business Overview

We are an independent global asset manager, specializing in active investment across all major asset classes. We actively manage a broad range of investment products for institutional and retail investors across four capabilities: Equities, Fixed Income, Multi-Asset and Alternatives. Our strategy revolves around three strategic pillars: Protect and Grow, Amplify, and Diversify, emphasizing relentless focus and disciplined execution in our core business for future success as a global active asset manager. Our strategy aims to foster sustained net new revenue and organic growth while also capitalizing on opportunistic inorganic growth opportunities to generate value for all of our stakeholders. We serve a diverse clientele worldwide, comprising intermediaries, institutional investors and self-directed clients. To cater to regional needs effectively, we maintain local presence across most markets and provide investment materials tailored to local customs, preferences and languages supported by our global distribution team.

Segment Considerations

We are a global asset manager and manage a range of investment products, operating across various product lines, distribution channels and geographic regions. However, information is reported to the chief operating decision-maker, our Chief Executive Officer (“CEO”), on an aggregated basis. Strategic and financial management decisions are determined centrally by our CEO and, on this basis, we operate as a single-segment investment management business.

Revenue

Revenue primarily consists of management fees and performance fees. Management fees are generally based on a percentage of the market value of our assets under management (“AUM”) and are calculated using either the daily, month-end or quarter-end average asset balance in accordance with contractual agreements. Accordingly, fluctuations in the financial markets have a direct effect on our operating results. Additionally, our AUM may outperform or underperform the financial markets and, therefore, may fluctuate in varying degrees from that of the general market.

Performance fees are specified in certain fund and client contracts, and are based on investment performance either on an absolute basis or compared to an established index over a specified period of time. These fees are often subject to a high-water mark. Performance fees are recognized at the end of the contractual period (typically monthly, quarterly or annually) if the stated performance criteria are achieved. Certain fund contracts allow for negative performance fees where there is underperformance against the relevant index.

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SECOND QUARTER 2024 SUMMARY

Second Quarter 2024 Highlights

●

We achieved solid investment performance, with 69%, 63%, 66% and 84% of our AUM outperforming relevant benchmarks on a one-, three-, five- and 10-year basis, respectively, as of June 30, 2024.

●

Second quarter 2024 net inflows of $1.7 billion reflect net inflows in Intermediary and Institutional.

●

Second quarter 2024 diluted earnings per share was $0.81, or $0.85 on an adjusted basis, an increase of 50% and 37% from June 30, 2023, respectively. Refer to the Non-GAAP Financial Measures section below for information on adjusted non-GAAP figures.

●

AUM increased to $361.4 billion, up 2.5% from March 31, 2024, and 12% from June 30, 2023.

●

We returned $96.7 million in capital to shareholders through dividends and share buybacks during the second quarter 2024.

●

On July 31, 2024, our Board of Directors declared a $0.39 per share dividend for the second quarter 2024.

●

On July 1, 2024, we closed the previously announced acquisition of Tabula Investment Management.

Financial Summary

Results are reported on a U.S. GAAP basis. Adjusted non-GAAP figures are presented in the Non-GAAP Financial Measures section below.

Revenue for the second quarter 2024 was $588.4 million, an increase of $71.9 million, or 14%, compared to the second quarter 2023. The key driver of the increase was:

●

An increase of $49.3 million in management fees primarily due to a market-driven increase in average AUM compared to the second quarter 2023.

Total operating expenses for the second quarter 2024 were $424.1 million, an increase of $25.5 million, or 6%, compared to the second quarter 2023. Key drivers of the increase included:

●

An increase of $18.6 million in employee compensation and benefits primarily due to higher variable compensation charges as a result of an increase in operating income.

●

An increase of $12.0 million in distribution expenses primarily driven by an increase in average AUM.

Operating income for the second quarter 2024 was $164.3 million, an increase of $46.4 million, or 39%, compared to the second quarter 2023. Our operating margin was 27.9% in the second quarter 2024 compared to 22.8% in the second quarter 2023.

Net income attributable to JHG for the second quarter 2024 was $129.7 million, an increase of $39.9 million, or 44%, compared to the second quarter 2023. In addition to the aforementioned factors affecting revenue and operating expenses, key drivers of the variance included:

●

An increase of $13.4 million in our income tax provision, primarily due to higher operating income in the second quarter 2024.

Investment Performance of Assets Under Management

The following table is a summary of investment performance as of June 30, 2024:

Percentage of AUM outperforming benchmark⁽¹⁾	1 year			3 years			5 years			10 years
Equities		58	%		53	%		54	%		79	%
Fixed Income		88	%		72	%		83	%		92	%
Multi-Asset		96	%		96	%		97	%		97	%
Alternatives		82	%		80	%		100	%		100	%
Total		69	%		63	%		66	%		84	%

(1)

Outperformance is measured based on composite performance gross of fees versus primary benchmark, except where a strategy has no benchmark index or corresponding composite in which case the most relevant metric is used: (1) composite gross of fees versus zero for absolute return strategies, (2) fund net of fees versus primary index or (3) fund net of fees versus Morningstar peer group average or median. Non-discretionary and separately managed account assets are included with a corresponding composite where applicable. Cash management vehicles, ETF-enhanced beta strategies, Managed CDOs, Private Equity funds and custom non-discretionary accounts with no corresponding composite are excluded from the analysis. Excluded assets represent 3% of AUM for the period ended June 30, 2024.

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Assets Under Management

Our AUM as of June 30, 2024, was $361.4 billion, an increase of $26.5 billion, or 8%, from December 31, 2023, driven primarily by positive market performance of $29.6 billion.

Our non-USD AUM is primarily denominated in GBP, EUR and AUD. During the three months ended June 30, 2024, the USD weakened against GBP and AUD and strengthened against EUR, resulting in a $0.3 billion increase in our AUM. During the six months ended June 30, 2024, the USD strengthened against GBP, EUR and AUD, resulting in a $1.8 billion decrease in our AUM. As of June 30, 2024, approximately 28% of our AUM was non-USD-denominated.

Our AUM and flows by capability for the three and six months ended June 30, 2024 and 2023, were as follows (in billions):

	Closing AUM																	Closing AUM
	March 31,							Net sales							Reclassifications			June 30,
	2024		Sales		Redemptions⁽¹⁾			(redemptions)			Markets		FX⁽²⁾		and disposals⁽³⁾			2024
By capability:
Equities	$	222.3	$	7.0	$	(8.4	)	$	(1.4	)	$	5.3	$	—	$	—		$	226.2
Fixed Income		70.6		8.3		(5.0	)		3.3			0.2		0.3		0.1			74.5
Multi-Asset		51.1		1.6		(2.4	)		(0.8	)		1.3		—		(0.1	)		51.5
Alternatives		8.6		1.2		(0.6	)		0.6			—		—		—			9.2
Total	$	352.6	$	18.1	$	(16.4	)	$	1.7		$	6.8	$	0.3	$	—		$	361.4

	Closing AUM																		Closing AUM
	December 31,							Net sales								Reclassifications			June 30,
	2023		Sales		Redemptions⁽¹⁾			(redemptions)			Markets		FX⁽²⁾			and disposals⁽³⁾			2024
By capability:
Equities	$	205.1	$	15.1	$	(17.6	)	$	(2.5	)	$	24.4	$	(0.8	)	$	—		$	226.2
Fixed Income		71.5		14.1		(10.7	)		3.4			0.3		(0.8	)		0.1			74.5
Multi-Asset		48.9		2.9		(4.5	)		(1.6	)		4.4		(0.1	)		(0.1	)		51.5
Alternatives		9.4		1.9		(2.5	)		(0.6	)		0.5		(0.1	)		—			9.2
Total	$	334.9	$	34.0	$	(35.3	)	$	(1.3	)	$	29.6	$	(1.8	)	$	—		$	361.4

	Closing AUM																		Closing AUM
	March 31,							Net sales								Reclassifications			June 30,
	2023		Sales		Redemptions⁽¹⁾			(redemptions)			Markets			FX⁽²⁾		and disposals⁽³⁾			2023
By capability:
Equities	$	188.5	$	8.6	$	(8.6	)	$	—		$	9.7		$	0.9	$	0.4		$	199.5
Fixed Income		65.0		5.1		(4.1	)		1.0			(0.3	)		0.2		—			65.9
Multi-Asset		46.8		1.1		(1.8	)		(0.7	)		1.6			—		—			47.7
Alternatives		10.2		0.4		(1.2	)		(0.8	)		(0.1	)		0.1		(0.4	)		9.0
Total	$	310.5	$	15.2	$	(15.7	)	$	(0.5	)	$	10.9		$	1.2	$	—		$	322.1

	Closing AUM																		Closing AUM
	December 31,							Net sales								Reclassifications			June 30,
	2022		Sales		Redemptions⁽¹⁾			(redemptions)			Markets			FX⁽²⁾		and disposals⁽³⁾			2023
By capability:
Equities	$	171.3	$	19.3	$	(16.0	)	$	3.3		$	22.6		$	1.9	$	0.4		$	199.5
Fixed Income		59.8		12.4		(7.8	)		4.6			1.2			0.3		—			65.9
Multi-Asset		45.5		2.1		(3.6	)		(1.5	)		3.6			0.1		—			47.7
Alternatives		10.7		0.9		(2.3	)		(1.4	)		(0.1	)		0.2		(0.4	)		9.0
Total	$	287.3	$	34.7	$	(29.7	)	$	5.0		$	27.3		$	2.5	$	—		$	322.1

(1)	Redemptions include the impact of client transfers.

(2)	FX reflects movements in AUM resulting from changes in foreign currency rates as non-USD-denominated AUM is translated into USD.
(3)	Reclassifications relate to the reclassification of existing funds from multi-asset to fixed income and from alternatives to equities.

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Our AUM and flows by client type for the three and six months ended June 30, 2024 and 2023, were as follows (in billions):

	Closing AUM																Closing AUM
	March 31,							Net sales							Reclassifications		June 30,
	2024		Sales		Redemptions⁽¹⁾			(redemptions)			Markets		FX⁽²⁾		and disposals⁽³⁾		2024
By client type:
Intermediary	$	195.0	$	13.2	$	(10.8	)	$	2.4		$	2.7	$	—	$	—	$	200.1
Self-directed		82.9		0.5		(1.4	)		(0.9	)		3.0		—		—		85.0
Institutional		74.7		4.4		(4.2	)		0.2			1.1		0.3		—		76.3
Total	$	352.6	$	18.1	$	(16.4	)	$	1.7		$	6.8	$	0.3	$	—	$	361.4

	Closing AUM																		Closing AUM
	December 31,							Net sales								Reclassifications			June 30,
	2023		Sales		Redemptions⁽¹⁾			(redemptions)			Markets		FX⁽²⁾			and disposals⁽³⁾			2024
By client type:
Intermediary	$	183.4	$	25.6	$	(22.2	)	$	3.4		$	14.3	$	(0.9	)	$	(0.1	)	$	200.1
Self-directed		76.1		1.1		(2.9	)		(1.8	)		10.7		—			—			85.0
Institutional		75.4		7.3		(10.2	)		(2.9	)		4.6		(0.9	)		0.1			76.3
Total	$	334.9	$	34.0	$	(35.3	)	$	(1.3	)	$	29.6	$	(1.8	)	$	—		$	361.4

	Closing AUM																Closing AUM
	March 31,							Net sales							Reclassifications		June 30,
	2023		Sales		Redemptions⁽¹⁾			(redemptions)			Markets		FX⁽²⁾		and disposals⁽³⁾		2023
By client type:
Intermediary	$	171.0	$	9.1	$	(10.7	)	$	(1.6	)	$	5.0	$	0.8	$	—	$	175.2
Institutional		70.5		5.8		(3.9	)		1.9			1.2		0.3		—		73.9
Self-directed		69.0		0.3		(1.1	)		(0.8	)		4.7		0.1		—		73.0
Total	$	310.5	$	15.2	$	(15.7	)	$	(0.5	)	$	10.9	$	1.2	$	—	$	322.1

	Closing AUM																Closing AUM
	December 31,							Net sales							Reclassifications		June 30,
	2022		Sales		Redemptions⁽¹⁾			(redemptions)			Markets		FX⁽²⁾		and disposals⁽³⁾		2023
By client type:
Intermediary	$	162.0	$	19.0	$	(21.3	)	$	(2.3	)	$	13.7	$	1.8	$	—	$	175.2
Institutional		61.0		15.0		(6.2	)		8.8			3.6		0.5		—		73.9
Self-directed		64.3		0.7		(2.2	)		(1.5	)		10.0		0.2		—		73.0
Total	$	287.3	$	34.7	$	(29.7	)	$	5.0		$	27.3	$	2.5	$	—	$	322.1

(1)	Redemptions include the impact of client transfers.

(2)	FX reflects movements in AUM resulting from changes in foreign currency rates as non-USD-denominated AUM is translated into USD.

(3)	Reclassifications relate to the reclassification of existing funds from intermediary to institutional.

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Average Assets Under Management

The following table presents our average AUM by capability for the three and six months ended June 30, 2024 and 2023 (in billions):

	Three months ended				Six months ended				Three months ended			Six months ended
	June 30,				June 30,				June 30,			June 30,
	2024		2023		2024		2023		2024 vs. 2023			2024 vs. 2023
Average AUM by capability:
Equities	$	220.8	$	193.4	$	216.8	$	188.8		14	%		15	%
Fixed Income		71.7		65.8		71.2		64.6		9	%		10	%
Multi-Asset		50.7		47.1		50.3		46.8		8	%		8	%
Alternatives		8.9		9.5		8.7		10.0		(6	)%		(13	)%
Total	$	352.1	$	315.8	$	347.0	$	310.2		11	%		12	%

Closing Assets Under Management

The following table presents the closing AUM by client location as of June 30, 2024 and 2023 (in billions):

	June 30,		June 30,		June 30,
	2024		2023		2024 vs. 2023
Closing AUM by client location:
North America	$	221.3	$	188.9		17	%
EMEA and Latin America		104.2		99.8		4	%
Asia Pacific		35.9		33.4		7	%
Total	$	361.4	$	322.1		12	%

Valuation of Assets Under Management

The fair value of our AUM is based on the value of the underlying cash and investment securities of our funds, trusts and segregated mandates. A significant proportion of these securities is listed or quoted on a recognized securities exchange or market and is regularly traded thereon; these investments are valued based on unadjusted quoted market prices. However, for non-U.S. equity securities held by U.S. mutual funds, excluding exchange-traded funds, the quoted market prices may be adjusted to capture market movement between the time the local market closes and the NYSE closes. Other investments, including over-the-counter derivative contracts (which are dealt in or through a clearing firm, exchanges or financial institutions), are valued by reference to the most recent official settlement price quoted by the appointed market vendor, and in the event no price is available from this source, a broker quotation may be used. Physical property held is valued monthly by a specialist independent appraiser.

When a readily ascertainable market value does not exist for an investment, the fair value is calculated using a variety of methodologies, including the expected cash flows of its underlying net asset base, taking into account applicable discount rates and other factors; comparable securities or relevant indices; recent financing rounds; revenue multiples; or a combination thereof. Judgment is used to ascertain if a formerly active market has become inactive and to determine fair values when markets have become inactive. Our Fair Value Pricing committees are responsible for determining or approving these unquoted prices, which are reported to those charged with governance of the funds and trusts. For funds that invest in markets that are closed at their valuation point, an assessment is made daily to determine whether a fair value pricing adjustment is required to the fund’s valuation. This may be due to significant market movements in other correlated open markets, scheduled market closures or unscheduled market closures as a result of natural disaster or government intervention.

Third-party administrators hold a key role in the collection and validation of prices used in the valuation of the securities. Daily price validation is completed using techniques such as day-on-day tolerance movements, invariant prices, excessive movement checks and intra-vendor tolerance checks. Our data management team performs oversight of this process and completes annual due diligence on the processes of third parties.

In other cases, we and the sub-administrators perform a number of procedures to validate the pricing received from third-party providers. For actively traded equity and fixed income securities, prices are received daily from both a primary and secondary vendor. Prices from the primary and secondary vendors are compared to identify any discrepancies. In the event of a discrepancy, a price challenge may be issued to both vendors. Securities with significant day-to-day price changes require additional research, which may include a review of all news pertaining to the issue and issuer, and any corporate actions. All fixed income prices are reviewed by our fixed income trading desk to incorporate market activity information available to our traders. In the event the traders have received price indications from market makers for a particular issue, this information is transmitted to the pricing vendors.

We leverage the expertise of our fund management teams across the business to cross-invest assets and create value for our clients. Where cross investment occurs, assets and flows are identified, and the duplication is removed.

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Results of Operations

Foreign Currency Translation

Foreign currency translation impacts our results of operations. Revenue is impacted by foreign currency translation, but the impact is generally determined by the primary currency of the individual funds. Expenses are also impacted by foreign currency translation, primarily driven by the translation of GBP to USD. The GBP strengthened against the USD during the three months ended June 30, 2024, and weakened against the USD during the six months ended June 30, 2024, compared to the same periods in 2023. Meaningful foreign currency translation impacts to our revenue and operating expenses are discussed below.

Revenue

	Three months ended					Six months ended						Three months ended			Six months ended
	June 30,					June 30,						June 30,			June 30,
	2024		2023			2024			2023			2024 vs. 2023			2024 vs. 2023
Revenue (in millions):
Management fees	$	472.8	$	423.5		$	932.2		$	838.1			12	%	11%
Performance fees		7.4		(5.9	)		(5.7	)		(20.8	)		n/m*		73%
Shareowner servicing fees		58.5		53.3			115.7			104.8			10	%	10%
Other revenue		49.7		45.6			97.9			90.2			9	%	9%
Total revenue	$	588.4	$	516.5		$	1,140.1		$	1,012.3			14	%	13%

* n/m — Not meaningful.

Management fees

Management fees increased by $49.3 million during the three months ended June 30, 2024, compared to the three months ended June 30, 2023, and by $94.1 million during the six months ended June 30, 2024, compared to the six months ended June 30, 2023. The increases in management fees were primarily due to an improvement in average AUM.

Performance fees

Performance fees are derived across a number of product ranges. U.S. mutual fund performance fees are recognized on a monthly basis, while all other performance fees are recognized on a quarterly or annual basis. The investment management fees paid by each U.S. mutual fund subject to a performance fee is the base management fee plus or minus a performance fee adjustment, as determined by the relative investment performance of the fund, over a 36-month rolling period, compared to a specified benchmark index. Performance fees by product type consisted of the following for the three and six months ended June 30, 2024 and 2023 (in millions):

	Three months ended						Six months ended						Three months ended			Six months ended
	June 30,						June 30,						June 30,			June 30,
	2024			2023			2024			2023			2024 vs. 2023			2024 vs. 2023
Performance fees (in millions):
SICAVs	$	11.8		$	1.4		$	12.0		$	1.3			n/m*		n/m*
UK OEICs and unit trusts		5.6			—			5.6			—			n/m*		n/m*
Absolute return funds and other funds		—			0.7			—			0.8			(100	)%	n/m*
Segregated mandates		0.6			(0.2	)		0.7			(0.1	)		n/m*		n/m*
Investment trusts		0.7			9.2			0.7			9.2			(92	)%	(92)%
U.S. mutual funds		(11.3	)		(17.0	)		(24.7	)		(32.0	)		34	%	23%
Total performance fees	$	7.4		$	(5.9	)	$	(5.7	)	$	(20.8	)		n/m*		73%

* n/m — Not meaningful.

Performance fees

Performance fees improved by $13.3 million during the three months ended June 30, 2024, compared to the three months ended June 30, 2023, and by $15.1 million during the six months ended June 30, 2024, compared to the six months ended June 30, 2023. The increases were primarily due to an improvement in performance of Société d’Investissement À Capital Variable (“SICAVs”), UK Open Ended Investment Companies (“UK OEICs”) and unit trusts and the U.S mutual funds. These improvements were partially offset by a decline in performance of certain investment trusts.

Shareowner servicing fees

Shareowner servicing fees are primarily composed of U.S. mutual fund servicing fees, which are driven by AUM. Shareowner servicing fees increased by $5.2 million during the three months ended June 30, 2024, compared to the three months ended June 30, 2023, and by $10.9 million during the six months ended June 30, 2024, compared to the six months ended June 30, 2023. The increases in shareowner servicing fees were primarily due to an improvement in average mutual fund AUM.

Other revenue

Other revenue is primarily composed of 12b-1 distribution fees, general administration charges and other fee revenue. General administration charges include reimbursements from funds for various fees and expenses paid for by the investment manager on behalf of the funds. Other revenue increased by $4.1 million during the three months ended June 30, 2024, compared to the three months ended June 30, 2023, and by $7.7 million during the six months ended June 30, 2024, compared to the six months ended June 30, 2023. The increases in other revenue were primarily due to an improvement in average AUM.

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Operating Expenses

	Three months ended				Six months ended				Three months ended			Six months ended
	June 30,				June 30,				June 30,			June 30,
	2024		2023		2024		2023		2024 vs. 2023			2024 vs. 2023
Operating expenses (in millions):
Employee compensation and benefits	$	166.3	$	147.7	$	332.1	$	288.0		13	%		15	%
Long-term incentive plans		36.4		37.6		86.8		93.1		(3	)%		(7	)%
Distribution expenses		126.6		114.6		249.0		226.6		10	%		10	%
Investment administration		12.8		11.1		25.0		22.7		15	%		10	%
Marketing		9.8		9.3		17.8		18.1		5	%		(2	)%
General, administrative and occupancy		66.9		72.2		135.5		133.3		(7	)%		2	%
Depreciation and amortization		5.3		6.1		10.4		12.2		(13	)%		(15	)%
Total operating expenses	$	424.1	$	398.6	$	856.6	$	794.0		6	%		8	%

Employee compensation and benefits

Employee compensation and benefits increased by $18.6 million during the three months ended June 30, 2024, compared to the three months ended June 30, 2023. The increase was primarily driven by an increase of $16.5 million in variable compensation, mainly due to higher profitability and $2.4 million of base-pay increases.

Employee compensation and benefits increased by $44.1 million during the six months ended June 30, 2024, compared to the six months ended June 30, 2023. The increase was primarily driven by an increase of $34.8 million in variable compensation, mainly due to higher profitability, $4.8 million of base-pay increases and unfavorable foreign currency translation of $1.8 million.

For the year ended December 31, 2024, we anticipate an adjusted compensation to revenue ratio in the range of 43% to 45%.

Long-term incentive plans

Long-term incentive plan expenses decreased by $1.2 million during the three months ended June 30, 2024, compared to the three months ended June 30, 2023, primarily due to a decrease of $2.7 million for the roll-off of vested awards and the forfeiture of awards related to departed employees exceeding the roll-on of new awards and the acceleration of expense related to departed employees.

Long-term incentive plan expenses decreased by $6.3 million during the six months ended June 30, 2024, compared to the six months ended June 30, 2023, primarily due to a decrease of $9.5 million for the roll-off of vested awards and the forfeiture of awards related to departed employees exceeding the roll-on of new awards and the acceleration of expense related to departed employees. This decline was partially offset by a $2.7 million increase driven by market appreciation of mutual fund share awards and certain long-term incentive awards.

Distribution expenses

Distribution expenses are paid to financial intermediaries for the distribution and servicing of our retail investment products and are typically calculated based on the amount of the intermediary-sourced AUM. Distribution expenses increased by $12.0 million during the three months ended June 30, 2024, compared to the three months ended June 30, 2023, and by $22.4 million during the six months ended June 30, 2024, compared to the six months ended June 30, 2023. The increases in distribution expenses were primarily due to an improvement in average AUM subject to distribution expenses.

General, administrative and occupancy

General, administrative and occupancy expenses decreased by $5.3 million during the three months ended June 30, 2024, compared to the three months ended June 30, 2023. The decrease was primarily due to a $4.7 million insurance reimbursement related to a separately managed account trade error that occurred in 2023 and a $3.4 million decrease in consultancy fees related to certain project costs. These decreases were partially offset by a $2.9 million increase in the amortization of capitalized cloud computing costs, primarily related to the order management system transformation project that was completed in the second quarter of 2023.

General, administrative and occupancy expenses increased by $2.2 million during the six months ended June 30, 2024, compared to the six months ended June 30, 2023. The increase was primarily due to a $6.9 million increase in the amortization of capitalized cloud computing costs, primarily related to the order management system transformation project that was completed in the second quarter of 2023, partially offset by a $4.7 million insurance reimbursement related to a separately managed account trade error that occurred in 2023.

2024 Non-compensation operating expenses

For the year ended December 31, 2024, we anticipate adjusted non-compensation expense growth in the mid- to high-single digits. The anticipated growth in our non-compensation expense is due to planned investments supporting our strategic initiatives, as well as anticipated inflation and amortization of certain capitalized costs.

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Non-Operating Income and Expenses

	Three months ended						Six months ended						Three months ended			Six months ended
	June 30,						June 30,						June 30,			June 30,
	2024			2023			2024			2023			2024 vs. 2023			2024 vs. 2023
Non-operating income and expenses (in millions):
Interest expense	$	(3.2	)	$	(3.2	)	$	(6.3	)	$	(6.3	)		—	%	—%
Investment gains, net		6.4			6.9			28.9			24.5			(7	)%	18%
Other non-operating income, net		7.6			7.0			42.2			14.1			9	%	n/m*
Income tax provision		(41.6	)		(28.2	)		(74.2	)		(54.2	)		(48	)%	(37)%

* n/m — Not meaningful.

Investment gains, net

The components of investment gains, net for the three and six months ended June 30, 2024 and 2023, were as follows (in millions):

	Three months ended						Six months ended						Three months ended			Six months ended
	June 30,						June 30,						June 30,			June 30,
	2024			2023			2024			2023			2024 vs. 2023			2024 vs. 2023
Investment gains, net (in millions):
Seeded investment products and hedges, net	$	4.6		$	9.6		$	16.5		$	15.0			(52	)%	10%
Third-party ownership interests in seeded investment products		3.8			10.6			14.3			19.2			(64	)%	(26)%
Equity method investments		(2.1	)		(14.5	)		(3.5	)		(11.5	)		(86	)%	(70)%
Other		0.1			1.2			1.6			1.8			(92	)%	(11)%
Investment gains, net	$	6.4		$	6.9		$	28.9		$	24.5			(7	)%	18%

Movements in investment gains, net are primarily due to the consolidation and deconsolidation of third-party ownership interests in seeded investment products and fair value adjustments in relation to our seeded investment products.

Gains and losses attributable to third-party ownership interests in seeded investment products are noncontrolling interests and are not included in net income attributable to JHG.

Other non-operating income, net

Other non-operating income, net moved favorably by $0.6 million during the three months ended June 30, 2024, compared to the three months ended June 30, 2023, primarily due to a $3.4 million increase in interest income driven by higher interest rates on cash balances and a $1.8 million fair value adjustment on an option agreement. These increases were partially offset by a $5.5 million release of accumulated foreign currency translation adjustments related to liquidated JHG entities.

Other non-operating income, net improved $28.1 million during the six months ended June 30, 2024, compared to the six months ended June 30, 2023, primarily due to a $16.5 million release of accumulated foreign currency translation adjustments related to liquidated JHG entities, an $8.3 million increase in interest income driven by higher interest rates on cash balances and a $2.4 million fair value adjustment on an option agreement.

For the remainder of the year ended December 31, 2024, we expect significant foreign currency translation adjustments to be reclassified from accumulated other comprehensive loss on the Condensed Consolidated Balance Sheets to other non-operating income, net on the Condensed Consolidated Statements of Comprehensive Income due to the anticipated liquidation of certain non-operating JHG entities. The timing of the reclassifications is uncertain and dependent on the progression of the liquidation process. Our current net estimate is $155 million, which would unfavorably impact other non-operating income, net on the Condensed Consolidated Statements of Comprehensive Income. However, the adjustments could be significantly lower or higher than this amount due to the progression of the liquidation process and, to a lesser extent, changes in foreign currency rates.

Income tax provision

Our effective tax rates for the three and six months ended June 30, 2024 and 2023, were as follows:

	Three months ended						Six months ended
	June 30,						June 30,
	2024			2023			2024			2023
Effective tax rate		23.8	%		22.0	%		21.3	%		21.6	%

The effective tax rate for the three and six months ended June 30, 2024, compared to the same periods in 2023, was impacted by the release of accumulated foreign currency translation reserves that are treated as non-taxable for tax purposes during the period. In addition, the tax rate was impacted by the disallowed noncontrolling interest expense from seeded investment products.

For the year ended December 31, 2024, we expect our tax rate on adjusted net income attributable to JHG to be in the range of 23% to 25%.

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Non-GAAP Financial Measures

We report our financial results in accordance with GAAP. However, we evaluate our profitability and our ongoing operations using additional non-GAAP financial measures. These measures are not in accordance with, or a substitute for, GAAP, and our financial measures may be different from non-GAAP financial measures used by other companies. Management uses these performance measures to evaluate the business, and adjusted values are consistent with internal management reporting. We have provided a reconciliation below of our non-GAAP financial measures to the most directly comparable GAAP measures.

Alternative performance measures

The following is a reconciliation of revenue, operating expenses, operating income, net income attributable to JHG and diluted earnings per share to adjusted revenue, adjusted operating expenses, adjusted operating income, adjusted net income attributable to JHG and adjusted diluted earnings per share, respectively, for the three months ended June 30, 2024 and 2023 (in millions, except per share and operating margin data):

	Three months ended
	June 30,
	2024			2023
Reconciliation of revenue to adjusted revenue
Revenue	$	588.4		$	516.5
Management fees		(48.2	)		(41.8	)
Shareowner servicing fees		(47.3	)		(43.3	)
Other revenue		(34.6	)		(29.5	)
Adjusted revenue⁽¹⁾	$	458.3		$	401.9
Reconciliation of operating expenses to adjusted operating expenses
Operating expenses	$	424.1		$	398.6
Employee compensation and benefits⁽²⁾		(4.7	)		(1.5	)
Long-term incentive plans⁽²⁾		(1.7	)		(0.6	)
Distribution expenses⁽¹⁾		(126.6	)		(114.6	)
General, administrative and occupancy⁽²⁾		2.6			(1.0	)
Depreciation and amortization⁽³⁾		(0.1	)		(0.5	)
Adjusted operating expenses	$	293.6		$	280.4
Adjusted operating income		164.7			121.5
Operating margin⁽⁴⁾		27.9	%		22.8	%
Adjusted operating margin⁽⁵⁾		35.9	%		30.2	%
Reconciliation of net income attributable to JHG to adjusted net income attributable to JHG
Net income attributable to JHG	$	129.7		$	89.8
Employee compensation and benefits⁽²⁾		1.2			1.5
Long-term incentive plans⁽²⁾		1.7			0.6
General, administrative and occupancy⁽²⁾		(2.6	)		1.0
Depreciation and amortization⁽³⁾		0.1			0.5
Investment gains, net⁽⁶⁾		0.8			12.5
Other non-operating income, net⁽⁶⁾		3.7			—
Income tax benefit (provision)⁽⁷⁾		0.6			(3.9	)
Adjusted net income attributable to JHG		135.2			102.0
Less: allocation of earnings to participating stock-based awards		(3.4	)		(3.1	)
Adjusted net income attributable to JHG common shareholders	$	131.8		$	98.9
Weighted-average common shares outstanding — diluted		155.8			160.7
Diluted earnings per share⁽⁸⁾	$	0.81		$	0.54
Adjusted diluted earnings per share⁽⁹⁾	$	0.85		$	0.62

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(1)

We contract with third-party intermediaries to distribute and service certain of our investment products. Fees for distribution- and servicing-related activities are either provided for separately in an investment product’s prospectus or are part of the management fee. Under both arrangements, the fees are collected by us and passed through to third-party intermediaries who are responsible for performing the applicable services. The majority of distribution and servicing fees we collect are passed through to third-party intermediaries. JHG management believes that the deduction of distribution and servicing fees from revenue in the computation of adjusted revenue reflects the pass-through nature of these revenues. In certain arrangements, we perform the distribution and servicing activities and retain the applicable fee. Revenues for distribution and servicing activities performed by us are not deducted from GAAP revenue. In addition to the adjustments related to distribution and servicing activities, other revenue for the three months ended June 30, 2024, also includes an adjustment related to an employee secondment arrangement with a joint venture. The arrangement is pass-through in nature, and we believe the costs do not represent our ongoing operations.

(2)

Adjustments for the three months ended June 30, 2024, include a $4.7 million insurance reimbursement related to a separately managed account trade error that occurred in 2023, acquisition related expenses and the acceleration of long-term incentive plan expense related to the departure of certain employees. Adjustments for the three months ended June 30, 2023, primarily relate to redundancy expenses and the acceleration of long-term incentive plan expense related to the departure of certain employees. JHG management believes these costs are not representative of our ongoing operations. Additionally, within the reconciliation of operating expenses to adjusted operating expenses for the three months ended June 30, 2024, employee compensation and benefits also includes an adjustment related to an employee secondment arrangement with a joint venture. The arrangement is pass-through in nature, and we believe the costs do not represent our ongoing operations.

(3)

Investment management contracts have been identified as a separately identifiable intangible asset arising on the acquisition of subsidiaries and businesses. Such contracts are recognized at the net present value of the expected future cash flows arising from the contracts at the date of acquisition. For segregated mandate contracts, the intangible asset is amortized on a straight-line basis over the expected life of the contracts. JHG management believes these non-cash and acquisition-related costs are not representative of our ongoing operations.

(4)	Operating margin is operating income divided by revenue.

(5)	Adjusted operating margin is adjusted operating income divided by adjusted revenue.

(6)

Adjustments for the three months ended June 30, 2024, consist primarily of the release of accumulated foreign currency translation adjustments related to JHG liquidated entities. The adjustment for the three months ended June 30, 2023, includes a correction of previously recognized earnings associated with an equity method investment. JHG management believes these costs are not representative of our ongoing operations.

(7)	The tax impact of the adjustments is calculated based on the applicable U.S. or foreign statutory tax rate as it relates to each adjustment. Certain adjustments are either not taxable or not tax-deductible.

(8)	Diluted earnings per share is net income attributable to JHG common shareholders divided by weighted-average diluted common shares outstanding.

(9)	Adjusted diluted earnings per share is adjusted net income attributable to JHG common shareholders divided by weighted-average diluted common shares outstanding.

LIQUIDITY AND CAPITAL RESOURCES

Our capital structure, together with available cash balances, cash flows generated from operations, and further capital and credit market activities, if necessary, should provide us with sufficient resources to meet present and future cash needs, including operating and other obligations as they fall due and anticipated future capital requirements.

The following table summarizes key balance sheet data relating to our liquidity and capital resources as of June 30, 2024, and December 31, 2023 (in millions):

	June 30,		December 31,
	2024		2023
Cash and cash equivalents held by the Company	$	985.3	$	1,145.9
Investments held by the Company	$	466.7	$	399.2
Fees and other receivables	$	254.9	$	294.0
Long-term debt	$	303.1	$	304.6

Cash and cash equivalents primarily consist of cash held at banks, on-demand deposits, investments in money market instruments, highly liquid short-term debt securities and commercial paper with a maturity date of three months or less. Cash and cash equivalents exclude cash held by consolidated VIEs and consolidated VREs, and investments exclude noncontrolling interests as these assets are not available for general corporate purposes.

Investments held by us represent seeded investment products (exclusive of noncontrolling interests), investments related to deferred compensation plans and other less significant investments classified as current assets in our Condensed Consolidated Balance Sheets.

We believe that existing cash and cash from operations should be sufficient to satisfy our short-term capital requirements. Expected short-term uses of cash include ordinary operating expenditures, seed capital investments, interest expense, dividend payments, income tax payments and common stock repurchases. We may also use available cash for other general corporate purposes and acquisitions.

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Regulatory Capital

We are subject to regulatory oversight by the SEC, the Financial Industry Regulatory Authority (“FINRA”), the U.S. Commodity Futures Trading Commission (“CFTC”), the Financial Conduct Authority (“FCA”) and other international regulatory bodies. We strive to ensure that we are compliant with our regulatory obligations at all times. Our primary capital requirement relates to the FCA-supervised regulatory group (a sub-group of our company), comprising Janus Henderson (UK) Holdings Limited, all of its subsidiaries and Janus Henderson Investors International Limited (“JHIIL”). JHIIL is included as a connected undertaking to meet the requirements of the Investment Firm Prudential Regime (“IFPR”) for Markets in Financial Instruments Directive (“MiFID”) investment firms (“MIFIDPRU”). The combined capital requirement is £136.0 million ($171.9 million), resulting in £327.6 million ($414.1 million) of capital above the requirement as of June 30, 2024, based upon internal calculations and taking into account the effect of foreseeable dividends. The increase in the surplus since March 31, 2024, is primarily due to the recognition of profits for the year ended December 31, 2023, as part of regulatory capital. Capital requirements in other jurisdictions are not significant in aggregate. The FCA-supervised regulatory group is also subject to liquidity requirements and holds a sufficient surplus above these requirements.

Short-Term Liquidity and Capital Resources

Common Stock Purchases - Corporate Buyback Program

On October 31, 2023, our Board of Directors approved the 2023 Corporate Buyback Program pursuant to which we were authorized to repurchase up to $150.0 million of our common stock on the NYSE at any time prior to the date of our 2024 Annual General Meeting of Shareholders, which was held on May 1, 2024. As of April 30, 2024, cumulative shares repurchased under the 2023 Corporate Buyback Program were 5,196,059 for $150 million.

On May 1, 2024, our Board of Directors approved the 2024 Corporate Buyback Program to which we are authorized to repurchase up to $150.0 million of our common stock on the NYSE at any time prior to the date of our 2025 Annual General Meeting of Shareholders. As of June 30, 2024, cumulative shares repurchased under the 2024 Corporate Buyback Program were 818,213 for $27.3 million.

Common Stock Purchases - Share Plan Purchases

On October 31, 2023, our Board of Directors separately approved the repurchase of up to 4 million additional shares of common stock for the purpose of making grants to executives and employees at any time prior to the date of our 2024 Annual General Meeting of Shareholders, which was held on May 1, 2024. Some of our executives and employees obtain rights to receive our common stock as part of their remuneration arrangements and employee entitlements (“Share Plan Repurchases”). We satisfy these entitlements by transferring shares of existing common stock that we repurchase on-market for this purpose. These repurchases are in addition to the repurchases under the Corporate Buyback Program discussed above. As of April 30, 2024, cumulative shares repurchased under the Share Plan Repurchases were 2,268,377 for $70.0 million.

On May 1, 2024, our Board of Directors also approved the repurchase of up to 5 million additional shares of common stock to make grants to executives and employees at any time prior to the date of our 2025 Annual General Meeting of Shareholders. As of June 30, 2024, cumulative shares repurchased under the 2024 Share Plan Repurchases were 250,001 shares for $8.6 million.

Dividends

The payment of cash dividends is within the discretion of our Board of Directors and depends on many factors, including our results of operations, financial condition, capital requirements, general business conditions and legal requirements.

Dividends declared and paid during the six months ended June 30, 2024, were as follows:

Dividend		Date	Dividends paid		Date
per share		declared	(in US$ millions)		paid
$	0.39	January 31, 2024	$	63.2	February 28, 2024
$	0.39	May 1, 2024	$	62.6	May 29, 2024

On July 31, 2024, our Board of Directors declared a $0.39 per share dividend for the second quarter 2024. The quarterly dividend will be paid on August 28, 2024, to shareholders of record at the close of business on August 12, 2024.

Long-Term Liquidity and Capital Resources

Expected long-term commitments as of June 30, 2024, include principal and interest payments related to the 2025 Senior Notes and operating and finance lease payments. We expect to fund our long-term commitments with existing cash and cash generated from operations or by accessing capital and credit markets as necessary.

2025 Senior Notes

The 2025 Senior Notes have a principal amount of $300.0 million, pay interest at 4.875% semiannually on February 1 and August 1 of each year, and mature on August 1, 2025.

Defined Benefit Pension Plan

As of December 31, 2023, our defined benefit pension plan had a net retirement asset of $85.3 million.

Other Sources of Liquidity

On June 30, 2023, we entered into a new $200 million unsecured, revolving Credit Facility and terminated our former Credit Facility as it was approaching its expiration date. The new Credit Facility includes an option for us to request an increase to our borrowing capacity under the Credit Facility of up to an additional $50.0 million. The maturity date of the Credit Facility is June 30, 2029.

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The Credit Facility may be used for general corporate purposes and bears interest on borrowings outstanding at the relevant interbank offer rate plus a spread.

The Credit Facility contains a financial covenant with respect to leverage. Should our long-term credit rating fall below a predefined threshold, our financing leverage ratio cannot exceed 3.00x EBITDA. At the latest practicable date before the date of this report, we were in compliance with all covenants, and there were no outstanding borrowings under the Credit Facility. Refer to Note 7 — Debt for further information on the Credit Facility.

Cash Flows

Cash flow data for the six months ended June 30, 2024 and 2023, was as follows (in millions):

	Six months ended
	June 30,
	2024			2023
Cash flows provided by (used for):
Operating activities	$	218.8		$	63.2
Investing activities		(114.7	)		(258.1	)
Financing activities		(230.1	)		15.7
Effect of exchange rate changes on cash and cash equivalents		(7.3	)		27.2
Net change in cash and cash equivalents		(133.3	)		(152.0	)
Cash balance at beginning of period		1,168.1			1,176.4
Cash balance at end of period	$	1,034.8		$	1,024.4

Operating Activities

Fluctuations in operating cash flows are attributable to changes in net income and working capital items, which can vary from period to period based on the amount and timing of cash receipts and payments.

Investing Activities

Cash used for investing activities for the six months ended June 30, 2024 and 2023, was as follows (in millions):

	Six months ended
	June 30,
	2024			2023
Purchases of investments, net	$	(42.2	)	$	(79.2	)
Purchases of investments by consolidated seeded investment products, net		(64.1	)		(163.0	)
Purchases of property, equipment and software		(3.7	)		(6.5	)
Cash paid on settled seed capital hedges, net		(5.4	)		(9.3	)
Other, net		0.7			(0.1	)
Cash used for investing activities	$	(114.7	)	$	(258.1	)

We periodically add new investment strategies to our investment product offerings by providing the initial cash investment, or seeding, in a product. The primary purpose of seeded investment products is to generate an investment performance track record in these products and leverage that track record to attract third-party investors. We may redeem our seed capital investments for a variety of reasons, including when third-party investments in the relevant product are sufficient to sustain the investment strategy. The cash associated with seeding and redeeming seeded investment products is reflected in the above table as purchases of investments, net.

We consolidate certain seeded investment products into our group financial statements. The purchases and sales of investments within consolidated seeded investment products are disclosed separately from our capital contributions to seed a product. We also maintain an economic hedge program that uses derivative instruments to mitigate against market exposure of certain seeded investments. The cash received and paid as part of this program is reflected in the table above.

The transactions discussed above represent a majority of the activity within investing activities on our Condensed Consolidated Statements of Cash Flows.

Financing Activities

Cash provided by (used for) financing activities for the six months ended June 30, 2024 and 2023, was as follows (in millions):

	Six months ended
	June 30,
	2024			2023
Dividends paid to shareholders	$	(125.8	)	$	(129.3	)
Third-party capital invested into consolidated seeded investment products, net		91.3			201.6
Purchase of common stock for stock-based compensation plans		(80.4	)		(57.5	)
Purchase of common stock for the share buyback program		(115.4	)		—
Other, net		0.2			0.9
Cash provided by (used for) financing activities	$	(230.1	)	$	15.7

The majority of cash flows within financing activities were driven by the payment of dividends to shareholders, the purchase of common stock as part of the 2024 Corporate Buyback Program and for stock-based compensation plans, and third-party capital invested into consolidated seeded investment products, net. Third-party capital invested into consolidated seeded investment products, net represents the cash received from third-party investors in a seeded investment product that is consolidated into our group financial statements. When a third-party investor redeems the investment, a cash outflow is disclosed as a distribution.

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CRITICAL ACCOUNTING ESTIMATES

We continually evaluate the accounting policies and estimates used to prepare the condensed consolidated financial statements. In general, management’s estimates are based on historical experience, information from third-party professionals, as appropriate, and various other assumptions that are believed to be reasonable under current facts and circumstances. Actual results could differ from those estimates made by management. There were no material changes to our critical accounting estimates described in our Annual Report on Form 10-K for the year ended December 31, 2023.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

There were no material changes in our exposure to market risks from that previously reported in our Annual Report on Form 10-K for the year ended December 31, 2023.

Item 4. Controls and Procedures

As of June 30, 2024, our management evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act). Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is accumulated and communicated to our management, including our principal executive and principal financial officers, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure. Disclosure controls and procedures are designed by us to ensure that we record, process, summarize and report within the time periods specified in the SEC’s rule and forms the information we must disclose in reports that we file with or submit to the SEC. Ali Dibadj, our CEO, and Roger Thompson, our Chief Financial Officer, reviewed and participated in management’s evaluation of the disclosure controls and procedures. Based on this evaluation, Mr. Dibadj and Mr. Thompson concluded that as of the date of their evaluation, our disclosure controls and procedures were effective.

There were no changes in our internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the second quarter 2024 that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II — OTHER INFORMATION

Item 1. Legal Proceedings

See Part I, Item 1. Financial Statements, Note 14 — Commitments and Contingencies.

Item 1A. Risk Factors

In addition to the other information set forth in this Quarterly Report on Form 10-Q, the risks discussed in our Annual Report on Form 10-K for the year ended December 31, 2023, could have a material adverse effect on our financial condition, results of operations and value of our common stock.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Common Stock Purchases - Corporate Buyback Program

Common Stock Purchases - Share Plan Purchases

On October 31, 2023, our Board of Directors separately approved the repurchase of up to 4 million additional shares of common stock to make grants to executives and employees at any time prior to the date of our 2024 Annual General Meeting of Shareholders, which was held on May 1, 2024. Some of our executives and employees obtain rights to receive our common stock as part of their remuneration arrangements and employee entitlements (“Share Plan Repurchases”). We satisfy these entitlements by transferring shares of existing common stock that we repurchase on-market for this purpose. These repurchases are in addition to the repurchases under the Corporate Buyback Program discussed above. As of April 30, 2024, cumulative shares repurchased under the Share Plan Repurchases were 2,268,377 for $70.0 million.

The following table summarizes our common stock repurchases by month during the three months ended June 30, 2024.

							Approximate U.S. dollar
	Total				Total number of shares		value of shares that
	number of		Average		purchased as part of		may yet be purchased
	shares		price paid per		publicly announced		under the programs
Period	purchased		share		programs		(end of month, in millions)
April 1, 2024, through April 30, 2024		213,062	$	32.42		213,061	$	150
May 1, 2024, through May 31, 2024		660,913	$	33.88		410,913	$	136
June 1, 2024, through June 30, 2024		407,300	$	33.16		407,300	$	123
Total		1,281,275	$	33.41		1,031,274

Items 3 and 4.

Not applicable.

Item 5. Other Information

Trading Plans of Directors and Officers

During the quarter ended June 30, 2024, no director or Section 16 officer adopted, modified or terminated any Rule 10b5–1 trading arrangements or non-Rule 10b5–1 trading arrangements (in each case, as defined in Item 408(a) of Regulation S-K).

Table of Contents

Item 6. Exhibits

Filed with This Report:

Exhibit No.		Document

31.1		Certification of Ali Dibadj, Chief Executive Officer of Registrant
31.2		Certification of Roger Thompson, Chief Financial Officer of Registrant
32.1		Certification of Ali Dibadj, Chief Executive Officer of Registrant, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2		Certification of Roger Thompson, Chief Financial Officer of Registrant, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

101.INS		XBRL Instance Document — the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document

101.SCH		Inline XBRL Taxonomy Extension Schema Document

101.CAL		Inline XBRL Taxonomy Extension Calculation Linkbase Document

101.DEF		Inline XBRL Taxonomy Extension Definition Linkbase Document

101.LAB		Inline XBRL Taxonomy Extension Label Linkbase Document

101.PRE		Inline XBRL Taxonomy Extension Presentation Linkbase Document

104		Cover Page Interactive Data File (the cover page XBRL tags are embedded in the Inline XBRL document)

Table of Contents

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Date: August 1, 2024


Janus Henderson Group plc

/s/ Ali Dibadj
Ali Dibadj,
Chief Executive Officer
(Principal Executive Officer)

/s/ Roger Thompson
Roger Thompson,
Chief Financial Officer
(Principal Financial Officer)

/s/ Berg Crawford
Berg Crawford,
Chief Accounting Officer
(Principal Accounting Officer)

Exhibit 31.1

CERTIFICATION

I, Ali Dibadj, certify that:

1.	I have reviewed this quarterly report on Form 10-Q of Janus Henderson Group plc;

2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.	The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting that are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

/s/ Ali Dibadj
Ali Dibadj
Chief Executive Officer

Date: August 1, 2024

A signed original of this written statement required by Section 302 has been provided to Janus Henderson Group plc and will be retained by Janus Henderson Group plc and furnished to the Securities and Exchange Commission or its staff upon request.

Exhibit 31.2

CERTIFICATION

I, Roger Thompson, certify that:

1.	I have reviewed this quarterly report on Form 10-Q of Janus Henderson Group plc;

2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

5.	The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

/s/ Roger Thompson
Roger Thompson
Chief Financial Officer

Date: August 1, 2024

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the quarterly report of Janus Henderson Group plc on Form 10-Q for the quarter ended June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “report”), I, Ali Dibadj, Chief Executive Officer of Janus Henderson Group plc, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

The report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

The information contained in the report fairly presents, in all material respects, the financial condition and results of operations of Janus Henderson Group plc.

/s/ Ali Dibadj
Ali Dibadj
Chief Executive Officer

Date: August 1, 2024

A signed original of this written statement required by Section 906 has been provided to Janus Henderson Group plc and will be retained by Janus Henderson Group plc and furnished to the Securities and Exchange Commission or its staff upon request.

Exhibit 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the quarterly report of Janus Henderson Group plc on Form 10-Q for the quarter ended June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “report”), I, Roger Thompson, Chief Financial Officer of Janus Henderson Group plc, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

The report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

The information contained in the report fairly presents, in all material respects, the financial condition and results of operations of Janus Henderson Group plc.

/s/ Roger Thompson
Roger Thompson
Chief Financial Officer

Date: August 1, 2024

Document And Entity Information - shares	6 Months Ended
Document And Entity Information - shares	Jun. 30, 2024	Jul. 30, 2024
Document Information [Line Items]
Entity Central Index Key	0001274173
Entity Registrant Name	JANUS HENDERSON GROUP PLC
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2024
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	001-38103
Entity Incorporation, State or Country Code	Y9
Entity Tax Identification Number	98-1376360
Entity Address, Address Line One	201 Bishopsgate
Entity Address, City or Town	London
Entity Address, Country	GB
Entity Address, Postal Zip Code	EC2M3AE
City Area Code	44
Local Phone Number	(0) 20 7818 1818
Title of 12(b) Security	Common Stock, $1.50 Per Share Par Value
Trading Symbol	JHG
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		159,264,003

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 1,013.9	$ 1,152.4
Investments	258.0	334.2
Fees and other receivables	254.9	294.0
OEIC and unit trust receivables	157.6	94.6
Other current assets	109.2	174.5
Total current assets	2,377.7	2,455.6
Non-current assets:
Property, equipment and software, net	39.3	44.2
Intangible assets, net	2,427.6	2,431.3
Goodwill	1,283.8	1,290.3
Retirement benefit asset, net	87.9	87.6
Other non-current assets	197.1	187.6
Total assets	6,413.4	6,496.6
Current liabilities:
Accounts payable and accrued liabilities	214.9	231.4
Current portion of accrued compensation, benefits and staff costs	198.6	297.9
OEIC and unit trust payables	164.4	98.5
Total current liabilities	586.9	631.0
Non-current liabilities:
Accrued compensation, benefits and staff costs	23.7	45.0
Long-term debt	303.1	304.6
Deferred tax liabilities, net	569.4	570.8
Retirement benefit obligations, net	2.3	2.3
Other non-current liabilities	106.5	87.4
Total liabilities	1,591.9	1,641.1
Commitments and contingencies (See Note 14)
REDEEMABLE NONCONTROLLING INTERESTS	346.7	317.2
EQUITY
Common stock, $1.50 par value; 480,000,000 shares authorized, and 159,643,633 and 163,338,035 shares issued and outstanding as of June 30, 2024, and December 31, 2023, respectively	239.5	245.0
Additional paid-in capital	3,675.4	3,722.3
Treasury shares, 40,439 and 41,444 shares held at June 30, 2024, and December 31, 2023, respectively	(1.1)	(1.1)
Accumulated other comprehensive loss, net of tax	(598.7)	(563.6)
Retained earnings	1,159.5	1,135.5
Total shareholders’ equity	4,474.6	4,538.1
Nonredeemable noncontrolling interests	0.2	0.2
Total equity	4,474.8	4,538.3
Total liabilities, redeemable noncontrolling interests and equity	6,413.4	6,496.6
Variable Interest Entity, Primary Beneficiary [Member]
Current assets:
Cash and cash equivalents	20.9	15.7
Investments	555.6	382.4
Other current assets	7.6	7.8
Current liabilities:
Accounts payable and accrued liabilities	$ 9.0	$ 3.2

Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) - $ / shares	Jun. 30, 2024	Dec. 31, 2023
Common stock, par value (in dollars per share)	$ 1.5	$ 1.5
Common stock, shares authorized (in shares)	480,000,000	480,000,000
Common stock, shares issued (in shares)	159,643,633	163,338,035
Common stock, shares outstanding (in shares)	159,643,633	163,338,035
Treasury shares (in shares)	40,439	41,444

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenue:
Total revenue	$ 588.4	$ 516.5	$ 1,140.1	$ 1,012.3
Operating expenses:
Employee compensation and benefits	166.3	147.7	332.1	288.0
Long-term incentive plans	36.4	37.6	86.8	93.1
Distribution expenses	126.6	114.6	249.0	226.6
Investment administration	12.8	11.1	25.0	22.7
Marketing	9.8	9.3	17.8	18.1
General, administrative and occupancy	66.9	72.2	135.5	133.3
Depreciation and amortization	5.3	6.1	10.4	12.2
Total operating expenses	424.1	398.6	856.6	794.0
Operating income:	164.3	117.9	283.5	218.3
Interest expense	(3.2)	(3.2)	(6.3)	(6.3)
Investment gains, net	6.4	6.9	28.9	24.5
Other non-operating income, net	7.6	7.0	42.2	14.1
Income before taxes	175.1	128.6	348.3	250.6
Income tax provision	(41.6)	(28.2)	(74.2)	(54.2)
Net income	133.5	100.4	274.1	196.4
Net income attributable to noncontrolling interests	(3.8)	(10.6)	(14.3)	(19.2)
Net income attributable to JHG	$ 129.7	$ 89.8	$ 259.8	$ 177.2
Earnings per share attributable to JHG common shareholders:
Basic (in dollars per share)	$ 0.81	$ 0.54	$ 1.62	$ 1.07
Diluted (in dollars per share)	$ 0.81	$ 0.54	$ 1.62	$ 1.07
Other comprehensive income (loss), net of tax:
Foreign currency translation	$ 3.5	$ 40.5	$ (20.1)	$ 85.0
Reclassification of foreign currency translation to net income	5.5	0.0	(16.5)	0.0
Actuarial gains	0.4	0.1	0.8	0.2
Other comprehensive income (loss), net of tax	9.4	40.6	(35.8)	85.2
Other comprehensive loss (income) attributable to noncontrolling interests	(0.4)	1.6	0.7	(1.6)
Other comprehensive income (loss) attributable to JHG	9.0	42.2	(35.1)	83.6
Total comprehensive income	142.9	141.0	238.3	281.6
Total comprehensive income attributable to noncontrolling interests	(4.2)	(9.0)	(13.6)	(20.8)
Total comprehensive income attributable to JHG	138.7	132.0	224.7	260.8
Investment Advice [Member]
Revenue:
Total revenue	472.8	423.5	932.2	838.1
Investment Performance [Member]
Revenue:
Total revenue	7.4	(5.9)	(5.7)	(20.8)
Shareholder Service [Member]
Revenue:
Total revenue	58.5	53.3	115.7	104.8
Product and Service, Other [Member]
Revenue:
Total revenue	$ 49.7	$ 45.6	$ 97.9	$ 90.2

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating activities:
Net income	$ 274.1	$ 196.4
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	10.4	12.2
Deferred income taxes	(0.2)	1.0
Stock-based compensation plan expense	33.2	42.9
Reclassification of foreign currency translation to net income	(16.5)	0.0
Investment gains, net	(28.9)	(24.5)
Other, net	(4.5)	(3.4)
Changes in operating assets and liabilities:
OEIC and unit trust receivables and payables	2.9	0.3
Other assets	70.5	15.0
Other accruals and liabilities	(122.2)	(176.7)
Net operating activities	218.8	63.2
Investing activities:
Investments, net	(42.2)	(79.2)
Property, equipment and software	(3.7)	(6.5)
Investments by consolidated seeded investment products, net	(64.1)	(163.0)
Cash paid on settled seed capital hedges, net	(5.4)	(9.3)
Other, net	0.7	(0.1)
Net investing activities	(114.7)	(258.1)
Financing activities:
Purchase of common stock for stock-based compensation plans	(80.4)	(57.5)
Purchase of common stock for the share buyback program	(115.4)	0.0
Dividends paid to shareholders	(125.8)	(129.3)
Third-party capital invested into consolidated seeded investment products, net	91.3	201.6
Other, net	0.2	0.9
Net financing activities	(230.1)	15.7
Cash and cash equivalents:
Effect of foreign exchange rate changes	(7.3)	27.2
Net change	(133.3)	(152.0)
At beginning of period	1,168.1	1,176.4
At end of period	1,034.8	1,024.4
Supplemental cash flow information:
Cash paid for interest	7.3	7.3
Cash paid for income taxes, net of refunds	55.9	56.0
Reconciliation of cash and cash equivalents:
Total cash and cash equivalents	1,034.8	1,024.4
Consolidated Entity, Excluding VIE [Member]
Reconciliation of cash and cash equivalents:
Total cash and cash equivalents	1,013.9	996.9
Variable Interest Entity, Primary Beneficiary [Member]
Reconciliation of cash and cash equivalents:
Total cash and cash equivalents	$ 20.9	$ 27.5

Condensed Consolidated Statements of Changes In Equity (Unaudited) - USD ($) shares in Millions, $ in Millions	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock, Common [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2022	165.7
Balance at Dec. 31, 2022	$ 248.5	$ 3,706.6	$ (8.3)	$ (647.7)	$ 1,060.7	$ 2.8	$ 4,362.6
Net income	0.0	0.0	0.0	0.0	177.2	0.0	177.2
Other comprehensive income	0.0	0.0	0.0	83.6	0.0	0.0	83.6
Reclassification of foreign currency translation to net income							0.0
Dividends paid to shareholders	0.0	0.0	0.0	0.0	(129.3)	0.0	(129.3)
Purchase of common stock for stock-based compensation plans	0.0	(57.0)	(0.5)	0.0	0.0	0.0	(57.5)
Vesting of stock-based compensation plans	0.0	(7.7)	7.7	0.0	0.0	0.0	0.0
Stock-based compensation plan expense	0.0	42.9	0.0	0.0	0.0	0.0	42.9
Proceeds from stock-based compensation plans	$ 0.0	2.3	0.0	0.0	0.0	0.0	2.3
Balance (in shares) at Jun. 30, 2023	165.7
Balance at Jun. 30, 2023	$ 248.5	3,687.1	(1.1)	(564.1)	1,108.6	2.8	4,481.8
Balance (in shares) at Mar. 31, 2023	165.7
Balance at Mar. 31, 2023	$ 248.5	3,663.4	(1.1)	(606.3)	1,083.4	2.8	4,390.7
Net income	0.0	0.0	0.0	0.0	89.8	0.0	89.8
Other comprehensive income	0.0	0.0	0.0	42.2	0.0	0.0	42.2
Reclassification of foreign currency translation to net income							0.0
Dividends paid to shareholders	0.0	0.0	0.0	0.0	(64.6)	0.0	(64.6)
Purchase of common stock for stock-based compensation plans	0.0		(0.3)	0.0	0.0	0.0	0.0
Vesting of stock-based compensation plans	0.0	(0.2)	0.3	0.0	0.0	0.0	0.1
Stock-based compensation plan expense	0.0	21.3	0.0	0.0	0.0	0.0	21.3
Proceeds from stock-based compensation plans	$ 0.0	2.3	0.0	0.0	0.0	0.0	2.3
Purchase of common stock for stock-based compensation plans		0.3
Balance (in shares) at Jun. 30, 2023	165.7
Balance at Jun. 30, 2023	$ 248.5	3,687.1	(1.1)	(564.1)	1,108.6	2.8	4,481.8
Balance (in shares) at Dec. 31, 2023	163.3
Balance at Dec. 31, 2023	$ 245.0	3,722.3	(1.1)	(563.6)	1,135.5	0.2	4,538.3
Net income	0.0	0.0	0.0	0.0	259.8	0.0	259.8
Other comprehensive income	0.0	0.0	0.0	(18.6)	0.0	0.0	(18.6)
Reclassification of foreign currency translation to net income	0.0	0.0	0.0	(16.5)	0.0	0.0	(16.5)
Dividends paid to shareholders	$ 0.0		0.0	0.0	(125.9)	0.0	(125.8)
Purchase of common stock for the share buyback program (in shares)	(3.7)
Purchase of common stock for the share buyback program	$ (5.5)	0.0	0.0	0.0	(109.9)	0.0	(115.4)
Purchase of common stock for stock-based compensation plans	0.0	(79.7)	(0.7)	0.0	0.0	0.0	(80.4)
Vesting of stock-based compensation plans	0.0	(0.7)	0.7	0.0	0.0	0.0	0.0
Stock-based compensation plan expense	0.0	33.2	0.0	0.0	0.0	0.0	33.2
Proceeds from stock-based compensation plans	$ 0.0	0.2	0.0	0.0	0.0	0.0	0.2
Dividends paid to shareholders ($0.78 per share)		0.1
Balance (in shares) at Jun. 30, 2024	159.6
Balance at Jun. 30, 2024	$ 239.5	3,675.4	(1.1)	(598.7)	1,159.5	0.2	4,474.8
Balance (in shares) at Mar. 31, 2024	160.7
Balance at Mar. 31, 2024	$ 241.0	3,670.0	(1.1)	(607.7)	1,125.0	0.2	4,427.4
Net income	0.0	0.0	0.0	0.0	129.7	0.0	129.7
Other comprehensive income	0.0	0.0	0.0	3.5	0.0	0.0	3.5
Reclassification of foreign currency translation to net income	0.0	0.0	0.0	5.5	0.0	0.0	5.5
Dividends paid to shareholders	$ 0.0	0.0	0.0	0.0	(62.6)	0.0	(62.6)
Purchase of common stock for the share buyback program (in shares)	(1.1)
Purchase of common stock for the share buyback program	$ (1.5)	0.0	0.0	0.0	(32.6)	0.0	(34.1)
Purchase of common stock for stock-based compensation plans	0.0	(10.2)	(0.3)	0.0	0.0	0.0	(10.5)
Vesting of stock-based compensation plans	0.0	(0.3)	0.3	0.0	0.0	0.0	0.0
Stock-based compensation plan expense	0.0	15.7	0.0	0.0	0.0	0.0	15.7
Proceeds from stock-based compensation plans	$ 0.0	0.2	0.0	0.0	0.0	0.0	0.2
Balance (in shares) at Jun. 30, 2024	159.6
Balance at Jun. 30, 2024	$ 239.5	$ 3,675.4	$ (1.1)	$ (598.7)	$ 1,159.5	$ 0.2	$ 4,474.8

Condensed Consolidated Statements of Changes In Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Dividends paid (in dollars per share)	$ 0.39	$ 0.39	$ 0.78	$ 0.78

Note 1 - Basis of Presentation

6 Months Ended

Jun. 30, 2024

Notes to Financial Statements

Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]

Note 1 — Basis of Presentation

Basis of Presentation

Recent Accounting Pronouncements

Note 2 - Consolidation

6 Months Ended

Jun. 30, 2024

Notes to Financial Statements

Variable Interest Entities Voting Rights Entities Consolidation Disclosure [Text Block]

Note 2 — Consolidation

Variable Interest Entities

Consolidated Variable Interest Entities

Unconsolidated Variable Interest Entities

	*June 30,*		*December 31,*
	*2024*		*2023*
Unconsolidated VIEs	$	15.0	$	17.2

Our total exposure to unconsolidated VIEs represents the value of our economic ownership interest in the investments.

Voting Rights Entities

Consolidated Voting Rights Entities

	*June 30,*			*December 31,*
	*2024*			*2023*
Investments	$	105.7		$	242.9
Cash and cash equivalents		28.6			6.5
Other current assets		0.6			21.6
Accounts payable and accrued liabilities		(1.3	)		(1.1	)
Total	$	133.6		$	269.9
Redeemable noncontrolling interests in consolidated VREs		(21.1	)		(100.9	)
JHG’s net interest in consolidated VREs	$	112.5		$	169.0

Our total exposure to consolidated VREs represents the value of our economic ownership interest in these seeded investment products.

Unconsolidated Voting Rights Entities

	*June 30,*		*December 31,*
	*2024*		*2023*
Unconsolidated VREs	$	57.6	$	9.9

Our total exposure to unconsolidated VREs represents the value of our economic ownership interest in the investments.

Note 3 - Investments

6 Months Ended

Jun. 30, 2024

Notes to Financial Statements

Investment [Text Block]

Note 3 — Investments

Our investments as of June 30, 2024, and December 31, 2023, are summarized as follows (in millions):

	*June 30,*		*December 31,*
	*2024*		*2023*
Current investments:
Seeded investment products:
Consolidated VIEs	$	555.6	$	382.4
Consolidated VREs		105.7		242.9
Unconsolidated VIEs and VREs		72.6		27.1
Separately managed accounts		44.1		44.1
Total seeded investment products		778.0		696.5
Investments related to deferred compensation plans		29.5		12.0
Other investments		6.1		8.1
Total current investments	$	813.6	$	716.6
Non-current investments:
Equity method investments		25.2		29.5
Total investments	$	838.8	$	746.1

Investment Gains, Net

Investment gains, net in our Condensed Consolidated Statements of Comprehensive Income included the following for the three and six months ended June 30, 2024 and 2023 (in millions):

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Seeded investment products and hedges, net	$	4.6		$	9.6		$	16.5		$	15.0
Third-party ownership interests in seeded investment products		3.8			10.6			14.3			19.2
Equity method investments		(2.1	)		(14.5	)		(3.5	)		(11.5	)
Other		0.1			1.2			1.6			1.8
Investment gains, net	$	6.4		$	6.9		$	28.9		$	24.5

	June 30,
	2024		2023
Unrealized gains (losses), net	$	35.6	$	(2.4	)

Gains and losses attributable to third-party ownership interests in seeded investment products are noncontrolling interests and are not included in net income attributable to JHG.

Equity Method Investments

Cash Flows

Cash flows related to our investments for the six months ended June 30, 2024 and 2023, are summarized as follows (in millions):

	Six months ended June 30,
	2024								2023
	Purchases			Sales,					Purchases			Sales,
	and			settlements and		Net			and			settlements and		Net
	settlements			maturities		cash flow			settlements			maturities		cash flow
Investments by consolidated seeded investment products	$	(103.5	)	$	39.4	$	(64.1	)	$	(204.8	)	$	41.8	$	(163.0	)
Investments		(114.8	)		72.6		(42.2	)		(143.2	)		64.0		(79.2	)

Note 4 - Derivative Instruments

6 Months Ended

Jun. 30, 2024

Notes to Financial Statements

Derivative Instruments and Hedging Activities Disclosure [Text Block]

Note 4 — Derivative Instruments

Derivative Instruments Used to Hedge Seeded Investment Products

We were party to the following derivative instruments as of June 30, 2024, and December 31, 2023 (in millions):

	*Notional value*
	*June 30, 2024*		*December 31, 2023*
Futures	$	532.5	$	1,018.0
Credit default swaps		147.8		199.7
Total return swaps		70.7		51.8
Foreign currency forward contracts		249.1		176.2

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Futures	$	2.9		$	3.6		$	(5.8	)	$	(3.1	)
Credit default swaps		(0.1	)		(0.6	)		(1.5	)		(2.5	)
Total return swaps		(1.3	)		(5.7	)		(5.9	)		(11.7	)
Foreign currency forward contracts and swaps		(1.8	)		4.3			0.9			8.8
Total gains (losses) from derivative instruments	$	(0.3	)	$	1.6		$	(12.3	)	$	(8.5	)

	*Fair value*
	*June 30, 2024*		*December 31, 2023*
Derivative liabilities	$	9.8	$	16.7

Derivative assets as of June 30, 2024, and December 31, 2023, were insignificant.

Derivative Instruments Used in Consolidated Seeded Investment Products

Our consolidated seeded investment products were party to the following derivative instruments as of June 30, 2024, and December 31, 2023 (in millions):

	*Notional value*
	*June 30, 2024*		*December 31, 2023*
Futures	$	136.7	$	1,555.1
Credit default swaps		3.1		13.2
Foreign currency forward contracts and swaps		139.0		135.3

As of June 30, 2024, and December 31, 2023, the derivative assets and liabilities in our Condensed Consolidated Balance Sheets were insignificant.

Derivative Instruments — Foreign Currency Hedging Program

The notional value of the foreign currency forward contracts and swaps as of June 30, 2024, and December 31, 2023, is summarized as follows (in millions):

	Notional value
	June 30, 2024		December 31, 2023
Foreign currency forward contracts and swaps	$	42.2	$	65.3

Note 5 - Fair Value Measurements

6 Months Ended

Jun. 30, 2024

Notes to Financial Statements

Fair Value Disclosures [Text Block]

Note 5 — Fair Value Measurements

	*Fair value measurements using:*
	*Quoted prices in*		*Significant*
	*active markets for*		*other*		*Significant*
	*identical assets*		*observable*		*unobservable*
	*and liabilities*		*inputs*		*inputs*
	*(Level 1)*		*(Level 2)*		*(Level 3)*		*Total*
Assets:
Cash equivalents	$	647.1	$	—	$	—	$	647.1
Current investments:
Consolidated VIEs		341.8		213.2		0.6		555.6
Other investments		223.6		34.4		—		258.0
Total current investments		565.4		247.6		0.6		813.6
Other		—		4.0		3.4		7.4
Total assets	$	1,212.5	$	251.6	$	4.0	$	1,468.1
Liabilities:
Long-term debt⁽¹⁾	$	—	$	298.3	$	—	$	298.3
Deferred bonuses		—		—		76.3		76.3
Other		2.4		11.2		—		13.6
Total liabilities	$	2.4	$	309.5	$	76.3	$	388.2

(1)	Carried at amortized cost in our Condensed Consolidated Balance Sheets and disclosed in this table at fair value.

	*Fair value measurements using:*
	*Quoted prices in*		*Significant*
	*active markets for*		*other*		*Significant*
	*identical assets*		*observable*		*unobservable*
	*and liabilities*		*inputs*		*inputs*
	*(Level 1)*		*(Level 2)*		*(Level 3)*		*Total*
Assets:
Cash equivalents	$	894.4	$	—	$	—	$	894.4
Current investments:
Consolidated VIEs		317.6		64.7		0.1		382.4
Other investments		212.2		122.0		—		334.2
Total current investments		529.8		186.7		0.1		716.6
Other		—		8.5		1.0		9.5
Total assets	$	1,424.2	$	195.2	$	1.1	$	1,620.5
Liabilities:
Long-term debt⁽¹⁾	$	—	$	298.0	$	—	$	298.0
Deferred bonuses		—		—		117.6		117.6
Other		1.7		18.6		—		20.3
Total liabilities	$	1.7	$	316.6	$	117.6	$	435.9

(1)	Carried at amortized cost in our Condensed Consolidated Balance Sheets and disclosed in this table at fair value.

Level 1 Fair Value Measurements

Level 2 Fair Value Measurements

Level 3 Fair Value Measurements

Investments

As of June 30, 2024, and December 31, 2023, certain investments within consolidated VIEs were valued using significant unobservable inputs, resulting in Level 3 classification.

Deferred Bonuses

Changes in Fair Value

Changes in fair value of our Level 3 liabilities for the three and six months ended June 30, 2024 and 2023, were as follows (in millions):

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Beginning of period fair value	$	59.0		$	60.0		$	117.6		$	46.5
Fair value adjustments		2.2			1.1			7.7			2.6
Vesting of deferred bonuses		(2.8	)		(1.1	)		(84.3	)		(34.3	)
Amortization of deferred bonuses		17.9			17.5			35.5			25.9
Foreign currency translation		—			0.7			(0.2	)		1.7
Additions		—			—			—			35.8
End of period fair value	$	76.3		$	78.2		$	76.3		$	78.2

Nonrecurring Fair Value Measurements

Note 6 - Goodwill and Intangible Assets

6 Months Ended

Jun. 30, 2024

Notes to Financial Statements

Goodwill and Intangible Assets Disclosure [Text Block]

Note 6 — Goodwill and Intangible Assets

The following tables present activity in our intangible assets and goodwill balances during the six months ended June 30, 2024 and 2023 (in millions):

							*Foreign*
	*December 31,*						*currency*			*June 30,*
	*2023*			*Amortization*			*translation*			*2024*
Indefinite-lived intangible assets:
Investment management agreements	$	2,064.8		$	—		$	(3.3	)	$	2,061.5
Trademarks		360.0			—			—			360.0
Definite-lived intangible assets:
Client relationships		68.6			—			(0.9	)		67.7
Accumulated amortization		(62.1	)		(0.2	)		0.7			(61.6	)
Net intangible assets	$	2,431.3		$	(0.2	)	$	(3.5	)	$	2,427.6

Goodwill	$	1,290.3		$	—		$	(6.5	)	$	1,283.8

							Foreign
	*December 31,*						*currency*			*June 30,*
	*2022*			*Amortization*			*translation*			*2023*
Indefinite-lived intangible assets:
Investment management agreements	$	2,046.5		$	—		$	16.7		$	2,063.2
Trademarks		360.0			—			—			360.0
Definite-lived intangible assets:
Client relationships		68.9			—			1.6			70.5
Accumulated amortization		(60.7	)		(1.0	)		(1.7	)		(63.4	)
Net intangible assets	$	2,414.7		$	(1.0	)	$	16.6		$	2,430.3

Goodwill	$	1,253.1		$	—		$	34.2		$	1,287.3

Note 7 - Debt

6 Months Ended

Jun. 30, 2024

Notes to Financial Statements

Debt Disclosure [Text Block]

Note 7 — Debt

Our debt as of June 30, 2024, and December 31, 2023, consisted of the following (in millions):

	*Carrying value*
	*June 30, 2024*		*December 31, 2023*
4.875% Senior Notes due 2025	$	303.1	$	304.6

4.875% Senior Notes Due 2025

Credit Facility

Note 8 - Income Taxes

6 Months Ended

Jun. 30, 2024

Notes to Financial Statements

Income Tax Disclosure [Text Block]

Note 8 — Income Taxes

Our effective tax rates for the three and six months ended June 30, 2024 and 2023, were as follows:

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Effective tax rate		23.8	%		22.0	%		21.3	%		21.6	%

Note 9 - Noncontrolling Interests

6 Months Ended

Jun. 30, 2024

Notes to Financial Statements

Noncontrolling Interest Disclosure [Text Block]

Note 9 — Noncontrolling Interests

Redeemable Noncontrolling Interests

Redeemable noncontrolling interests as of June 30, 2024, and December 31, 2023, consisted of the following (in millions):

	*June 30,*		*December 31,*
	*2024*		*2023*
Consolidated seeded investment products	$	346.7	$	317.2

Consolidated Seeded Investment Products

Noncontrolling interests in consolidated seeded investment products are classified as redeemable noncontrolling interests when there is an obligation to repurchase units at the investor’s request.

	*Three months ended*					*Six months ended*
	*June 30,*					*June 30,*
	*2024*		*2023*			*2024*			*2023*
Opening balance	$	274.7	$	384.7		$	317.2		$	233.9
Changes in market value		3.8		10.6			14.3			19.2
Changes in ownership		67.8		(4.0	)		15.9			136.2
Foreign currency translation		0.4		(1.5	)		(0.7	)		0.5
Closing balance	$	346.7	$	389.8		$	346.7		$	389.8

Note 10 - Long-Term Incentive Compensation

6 Months Ended

Jun. 30, 2024

Notes to Financial Statements

Share-Based Payment Arrangement [Text Block]

Note 10 — Long-Term Incentive Compensation

The following table presents restricted stock and mutual fund awards granted during the three and six months ended June 30, 2024 (in millions):

	*Three months ended*		*Six months ended*
	*June 30,*		*June 30,*
	*2024*		*2024*
Restricted stock	$	1.7	$	56.9
Mutual fund awards		0.1		67.1
Total	$	1.8	$	124.0

Restricted stock and mutual fund awards generally vest and will be recognized using a graded vesting method over a three-year period.

Note 11 - Retirement Benefit Plans

6 Months Ended

Jun. 30, 2024

Notes to Financial Statements

Retirement Benefits [Text Block]

Note 11 — Retirement Benefit Plans

We operate defined contribution retirement benefit plans and defined benefit pension plans.

Our primary defined benefit pension plan is the defined benefit section of the Janus Henderson Group UK Pension Scheme (“JHGPS”).

Net Periodic Benefit Cost

The components of net periodic benefit cost in respect of defined benefit plans for the three and six months ended June 30, 2024 and 2023, include the following (in millions):

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Interest cost	$	(6.7	)	$	(6.9	)	$	(13.5	)	$	(13.7	)
Amortization of prior service cost		(0.1	)		(0.1	)		(0.2	)		(0.2	)
Amortization of net gain		(0.3	)		—			(0.6	)		—
Expected return on plan assets		6.5			6.8			13.4			13.4
Net periodic benefit cost	$	(0.6	)	$	(0.2	)	$	(0.9	)	$	(0.5	)

Note 12 - Accumulated Other Comprehensive Loss

6 Months Ended

Jun. 30, 2024

Notes to Financial Statements

Comprehensive Income (Loss) Note [Text Block]

Note 12 — Accumulated Other Comprehensive Loss

Changes in accumulated other comprehensive loss, net of tax for the three and six months ended June 30, 2024 and 2023, were as follows (in millions):

	*Three months ended June 30,*
	*2024*									*2023*
				*Retirement*									*Retirement*
	*Foreign*			*benefit*						*Foreign*			*benefit*
	*currency*			*asset, net*			*Total*			*currency*			*asset, net*			*Total*
Beginning balance	$	(523.4	)	$	(84.3	)	$	(607.7	)	$	(536.0	)	$	(70.3	)	$	(606.3	)
Other comprehensive income		3.5			—			3.5			38.4			—			38.4
Reclassifications to net income⁽¹⁾		5.5			0.4			5.9			2.1			0.1			2.2
Total other comprehensive income		9.0			0.4			9.4			40.5			0.1			40.6
Less: other comprehensive loss (income) attributable to noncontrolling interests		(0.4	)		—			(0.4	)		1.6			—			1.6
Ending balance	$	(514.8	)	$	(83.9	)	$	(598.7	)	$	(493.9	)	$	(70.2	)	$	(564.1	)

	*Six months ended June 30,*
	*2024*									*2023*
				*Retirement*									*Retirement*
	*Foreign*			*benefit*						*Foreign*			*benefit*
	*currency*			*asset, net*			*Total*			*currency*			*asset, net*			*Total*
Beginning balance	$	(478.9	)	$	(84.7	)	$	(563.6	)	$	(577.3	)	$	(70.4	)	$	(647.7	)
Other comprehensive income (loss)		(20.1	)		—			(20.1	)		82.9			—			82.9
Reclassifications to net income⁽¹⁾		(16.5	)		0.8			(15.7	)		2.1			0.2			2.3
Total other comprehensive income (loss)		(36.6	)		0.8			(35.8	)		85.0			0.2			85.2
Less: other comprehensive loss (income) attributable to noncontrolling interests		0.7			—			0.7			(1.6	)		—			(1.6	)
Ending balance	$	(514.8	)	$	(83.9	)	$	(598.7	)	$	(493.9	)	$	(70.2	)	$	(564.1	)

(1) Reclassifications to net income are primarily related to the release of accumulated foreign currency translation reserves during the period in which a JHG entity liquidated.

The components of other comprehensive income (loss), net of tax for the three and six months ended June 30, 2024 and 2023, were as follows (in millions):

	*Three months ended June 30,*
	*2024*							*2023*
	*Pre-tax*		*Tax*			*Net*		*Pre-tax*		*Tax*			*Net*
	*amount*		*impact*			*amount*		*amount*		*impact*			*amount*
Foreign currency translation adjustments	$	3.6	$	(0.1	)	$	3.5	$	38.8	$	(0.4	)	$	38.4
Reclassifications to net income⁽¹⁾		5.9		—			5.9		2.2		—			2.2
Total other comprehensive income (loss)	$	9.5	$	(0.1	)	$	9.4	$	41.0	$	(0.4	)	$	40.6

	*Six months ended June 30,*
	*2024*								*2023*
	*Pre-tax*			*Tax*		*Net*			*Pre-tax*		*Tax*		*Net*
	*amount*			*impact*		*amount*			*amount*		*impact*		*amount*
Foreign currency translation adjustments	$	(22.8	)	$	2.7	$	(20.1	)	$	80.3	$	2.6	$	82.9
Reclassifications to net income⁽¹⁾		(15.7	)		—		(15.7	)		2.3		—		2.3
Total other comprehensive income (loss)	$	(38.5	)	$	2.7	$	(35.8	)	$	82.6	$	2.6	$	85.2

(1) Reclassifications to net income are primarily related to the release of accumulated foreign currency translation reserves during the period in which a JHG entity liquidated.

Note 13 - Earnings and Dividends Per Share

6 Months Ended

Jun. 30, 2024

Notes to Financial Statements

Earnings and Dividends Per Share [Text Block]

Note 13 — Earnings and Dividends Per Share

Earnings Per Share

The following is a summary of the earnings per share calculation for the three and six months ended June 30, 2024 and 2023 (in millions, except per share data):

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Net income attributable to JHG	$	129.7		$	89.8		$	259.8		$	177.2
Allocation of earnings to participating stock-based awards		(3.2	)		(2.7	)		(5.6	)		(5.0	)
Net income attributable to JHG common shareholders	$	126.5		$	87.1		$	254.2		$	172.2

Weighted-average common shares outstanding — basic		155.6			160.5			156.5			160.4
Dilutive effect of nonparticipating stock-based awards		0.2			0.2			0.2			0.2
Weighted-average common shares outstanding — diluted		155.8			160.7			156.7			160.6

Earnings per share:
Basic	$	0.81		$	0.54		$	1.62		$	1.07
Diluted	$	0.81		$	0.54		$	1.62		$	1.07

Dividends Per Share

The following is a summary of cash dividends declared and paid during the six months ended June 30, 2024:

*Dividend*		*Date*	*Dividends paid*		*Date*
*per share*		*declared*	*(in US$ millions)*		*paid*
$	0.39	January 31, 2024	$	63.2	February 28, 2024
$	0.39	May 1, 2024	$	62.6	May 29, 2024

Note 14 - Commitments and Contingencies

6 Months Ended

Jun. 30, 2024

Notes to Financial Statements

Commitments and Contingencies Disclosure [Text Block]

Note 14 — Commitments and Contingencies

Commitments and contingencies may arise in the normal course of business.

Litigation and Other Regulatory Matters

We are periodically involved in various legal proceedings and other regulatory matters.

Sandra Schissler v Janus Henderson US (Holdings) Inc., Janus Henderson Advisory Committee, and John and Jane Does 1-30

Insider Trading Arrangements	3 Months Ended	6 Months Ended
Insider Trading Arrangements	Jun. 30, 2024	Jun. 30, 2024
Insider Trading Arr Line Items
Material Terms of Trading Arrangement [Text Block]		Item 5. Other Information *Trading Plans of Directors and Officers* During the quarter ended June 30, 2024, no director or Section 16 officer adopted, modified or terminated any Rule 10b5–1 trading arrangements or non-Rule 10b5–1 trading arrangements (in each case, as defined in Item 408(a) of Regulation S-K).
Rule 10b5-1 Arrangement Adopted [Flag]	false
Non-Rule 10b5-1 Arrangement Adopted [Flag]	false
Rule 10b5-1 Arrangement Terminated [Flag]	false
Non-Rule 10b5-1 Arrangement Terminated [Flag]	false

Note 2 - Consolidation (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Schedule of Variable Interest Entities [Table Text Block]

	*June 30,*		*December 31,*
	*2024*		*2023*
Unconsolidated VIEs	$	15.0	$	17.2

Consolidated Voting Right Entities VRE [Table Text Block]

	*June 30,*			*December 31,*
	*2024*			*2023*
Investments	$	105.7		$	242.9
Cash and cash equivalents		28.6			6.5
Other current assets		0.6			21.6
Accounts payable and accrued liabilities		(1.3	)		(1.1	)
Total	$	133.6		$	269.9
Redeemable noncontrolling interests in consolidated VREs		(21.1	)		(100.9	)
JHG’s net interest in consolidated VREs	$	112.5		$	169.0

Unconsolidated Voting Right Entities VRE [Table Text Block]

	*June 30,*		*December 31,*
	*2024*		*2023*
Unconsolidated VREs	$	57.6	$	9.9

Note 3 - Investments (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Investment [Table Text Block]

	*June 30,*		*December 31,*
	*2024*		*2023*
Current investments:
Seeded investment products:
Consolidated VIEs	$	555.6	$	382.4
Consolidated VREs		105.7		242.9
Unconsolidated VIEs and VREs		72.6		27.1
Separately managed accounts		44.1		44.1
Total seeded investment products		778.0		696.5
Investments related to deferred compensation plans		29.5		12.0
Other investments		6.1		8.1
Total current investments	$	813.6	$	716.6
Non-current investments:
Equity method investments		25.2		29.5
Total investments	$	838.8	$	746.1

Gain (Loss) on Securities [Table Text Block]

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Seeded investment products and hedges, net	$	4.6		$	9.6		$	16.5		$	15.0
Third-party ownership interests in seeded investment products		3.8			10.6			14.3			19.2
Equity method investments		(2.1	)		(14.5	)		(3.5	)		(11.5	)
Other		0.1			1.2			1.6			1.8
Investment gains, net	$	6.4		$	6.9		$	28.9		$	24.5

Unrealized Gain (Loss) on Investments [Table Text Block]

	June 30,
	2024		2023
Unrealized gains (losses), net	$	35.6	$	(2.4	)

	Six months ended June 30,
	2024								2023
	Purchases			Sales,					Purchases			Sales,
	and			settlements and		Net			and			settlements and		Net
	settlements			maturities		cash flow			settlements			maturities		cash flow
Investments by consolidated seeded investment products	$	(103.5	)	$	39.4	$	(64.1	)	$	(204.8	)	$	41.8	$	(163.0	)
Investments		(114.8	)		72.6		(42.2	)		(143.2	)		64.0		(79.2	)

Note 4 - Derivative Instruments (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]

	*Notional value*
	*June 30, 2024*		*December 31, 2023*
Futures	$	532.5	$	1,018.0
Credit default swaps		147.8		199.7
Total return swaps		70.7		51.8
Foreign currency forward contracts		249.1		176.2

	*Notional value*
	*June 30, 2024*		*December 31, 2023*
Futures	$	136.7	$	1,555.1
Credit default swaps		3.1		13.2
Foreign currency forward contracts and swaps		139.0		135.3

	Notional value
	June 30, 2024		December 31, 2023
Foreign currency forward contracts and swaps	$	42.2	$	65.3

Derivative Instruments, Gain (Loss) [Table Text Block]

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Futures	$	2.9		$	3.6		$	(5.8	)	$	(3.1	)
Credit default swaps		(0.1	)		(0.6	)		(1.5	)		(2.5	)
Total return swaps		(1.3	)		(5.7	)		(5.9	)		(11.7	)
Foreign currency forward contracts and swaps		(1.8	)		4.3			0.9			8.8
Total gains (losses) from derivative instruments	$	(0.3	)	$	1.6		$	(12.3	)	$	(8.5	)

Schedule of Derivative Instruments [Table Text Block]

	*Fair value*
	*June 30, 2024*		*December 31, 2023*
Derivative liabilities	$	9.8	$	16.7

Note 5 - Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	*Fair value measurements using:*
	*Quoted prices in*		*Significant*
	*active markets for*		*other*		*Significant*
	*identical assets*		*observable*		*unobservable*
	*and liabilities*		*inputs*		*inputs*
	*(Level 1)*		*(Level 2)*		*(Level 3)*		*Total*
Assets:
Cash equivalents	$	647.1	$	—	$	—	$	647.1
Current investments:
Consolidated VIEs		341.8		213.2		0.6		555.6
Other investments		223.6		34.4		—		258.0
Total current investments		565.4		247.6		0.6		813.6
Other		—		4.0		3.4		7.4
Total assets	$	1,212.5	$	251.6	$	4.0	$	1,468.1
Liabilities:
Long-term debt⁽¹⁾	$	—	$	298.3	$	—	$	298.3
Deferred bonuses		—		—		76.3		76.3
Other		2.4		11.2		—		13.6
Total liabilities	$	2.4	$	309.5	$	76.3	$	388.2

	*Fair value measurements using:*
	*Quoted prices in*		*Significant*
	*active markets for*		*other*		*Significant*
	*identical assets*		*observable*		*unobservable*
	*and liabilities*		*inputs*		*inputs*
	*(Level 1)*		*(Level 2)*		*(Level 3)*		*Total*
Assets:
Cash equivalents	$	894.4	$	—	$	—	$	894.4
Current investments:
Consolidated VIEs		317.6		64.7		0.1		382.4
Other investments		212.2		122.0		—		334.2
Total current investments		529.8		186.7		0.1		716.6
Other		—		8.5		1.0		9.5
Total assets	$	1,424.2	$	195.2	$	1.1	$	1,620.5
Liabilities:
Long-term debt⁽¹⁾	$	—	$	298.0	$	—	$	298.0
Deferred bonuses		—		—		117.6		117.6
Other		1.7		18.6		—		20.3
Total liabilities	$	1.7	$	316.6	$	117.6	$	435.9

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Beginning of period fair value	$	59.0		$	60.0		$	117.6		$	46.5
Fair value adjustments		2.2			1.1			7.7			2.6
Vesting of deferred bonuses		(2.8	)		(1.1	)		(84.3	)		(34.3	)
Amortization of deferred bonuses		17.9			17.5			35.5			25.9
Foreign currency translation		—			0.7			(0.2	)		1.7
Additions		—			—			—			35.8
End of period fair value	$	76.3		$	78.2		$	76.3		$	78.2

Note 6 - Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Schedule of Intangible Assets and Goodwill [Table Text Block]

							*Foreign*
	*December 31,*						*currency*			*June 30,*
	*2023*			*Amortization*			*translation*			*2024*
Indefinite-lived intangible assets:
Investment management agreements	$	2,064.8		$	—		$	(3.3	)	$	2,061.5
Trademarks		360.0			—			—			360.0
Definite-lived intangible assets:
Client relationships		68.6			—			(0.9	)		67.7
Accumulated amortization		(62.1	)		(0.2	)		0.7			(61.6	)
Net intangible assets	$	2,431.3		$	(0.2	)	$	(3.5	)	$	2,427.6

Goodwill	$	1,290.3		$	—		$	(6.5	)	$	1,283.8

							Foreign
	*December 31,*						*currency*			*June 30,*
	*2022*			*Amortization*			*translation*			*2023*
Indefinite-lived intangible assets:
Investment management agreements	$	2,046.5		$	—		$	16.7		$	2,063.2
Trademarks		360.0			—			—			360.0
Definite-lived intangible assets:
Client relationships		68.9			—			1.6			70.5
Accumulated amortization		(60.7	)		(1.0	)		(1.7	)		(63.4	)
Net intangible assets	$	2,414.7		$	(1.0	)	$	16.6		$	2,430.3

Goodwill	$	1,253.1		$	—		$	34.2		$	1,287.3

Note 7 - Debt (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Schedule of Long-Term Debt Instruments [Table Text Block]

	*Carrying value*
	*June 30, 2024*		*December 31, 2023*
4.875% Senior Notes due 2025	$	303.1	$	304.6

Note 8 - Income Taxes (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Effective tax rate		23.8	%		22.0	%		21.3	%		21.6	%

Note 9 - Noncontrolling Interests (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Redeemable Noncontrolling Interest [Table Text Block]

	*June 30,*		*December 31,*
	*2024*		*2023*
Consolidated seeded investment products	$	346.7	$	317.2

Noncontrolling Interest Increase (Decrease) [Table Text Block]

	*Three months ended*					*Six months ended*
	*June 30,*					*June 30,*
	*2024*		*2023*			*2024*			*2023*
Opening balance	$	274.7	$	384.7		$	317.2		$	233.9
Changes in market value		3.8		10.6			14.3			19.2
Changes in ownership		67.8		(4.0	)		15.9			136.2
Foreign currency translation		0.4		(1.5	)		(0.7	)		0.5
Closing balance	$	346.7	$	389.8		$	346.7		$	389.8

Note 10 - Long-Term Incentive Compensation (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Share-Based Payment Arrangement, Activity [Table Text Block]

	*Three months ended*		*Six months ended*
	*June 30,*		*June 30,*
	*2024*		*2024*
Restricted stock	$	1.7	$	56.9
Mutual fund awards		0.1		67.1
Total	$	1.8	$	124.0

Note 11 - Retirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Schedule of Net Benefit Costs [Table Text Block]

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Interest cost	$	(6.7	)	$	(6.9	)	$	(13.5	)	$	(13.7	)
Amortization of prior service cost		(0.1	)		(0.1	)		(0.2	)		(0.2	)
Amortization of net gain		(0.3	)		—			(0.6	)		—
Expected return on plan assets		6.5			6.8			13.4			13.4
Net periodic benefit cost	$	(0.6	)	$	(0.2	)	$	(0.9	)	$	(0.5	)

Note 12 - Accumulated Other Comprehensive Loss (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

	*Three months ended June 30,*
	*2024*									*2023*
				*Retirement*									*Retirement*
	*Foreign*			*benefit*						*Foreign*			*benefit*
	*currency*			*asset, net*			*Total*			*currency*			*asset, net*			*Total*
Beginning balance	$	(523.4	)	$	(84.3	)	$	(607.7	)	$	(536.0	)	$	(70.3	)	$	(606.3	)
Other comprehensive income		3.5			—			3.5			38.4			—			38.4
Reclassifications to net income⁽¹⁾		5.5			0.4			5.9			2.1			0.1			2.2
Total other comprehensive income		9.0			0.4			9.4			40.5			0.1			40.6
Less: other comprehensive loss (income) attributable to noncontrolling interests		(0.4	)		—			(0.4	)		1.6			—			1.6
Ending balance	$	(514.8	)	$	(83.9	)	$	(598.7	)	$	(493.9	)	$	(70.2	)	$	(564.1	)

	*Six months ended June 30,*
	*2024*									*2023*
				*Retirement*									*Retirement*
	*Foreign*			*benefit*						*Foreign*			*benefit*
	*currency*			*asset, net*			*Total*			*currency*			*asset, net*			*Total*
Beginning balance	$	(478.9	)	$	(84.7	)	$	(563.6	)	$	(577.3	)	$	(70.4	)	$	(647.7	)
Other comprehensive income (loss)		(20.1	)		—			(20.1	)		82.9			—			82.9
Reclassifications to net income⁽¹⁾		(16.5	)		0.8			(15.7	)		2.1			0.2			2.3
Total other comprehensive income (loss)		(36.6	)		0.8			(35.8	)		85.0			0.2			85.2
Less: other comprehensive loss (income) attributable to noncontrolling interests		0.7			—			0.7			(1.6	)		—			(1.6	)
Ending balance	$	(514.8	)	$	(83.9	)	$	(598.7	)	$	(493.9	)	$	(70.2	)	$	(564.1	)

Comprehensive Income (Loss) [Table Text Block]

	*Three months ended June 30,*
	*2024*							*2023*
	*Pre-tax*		*Tax*			*Net*		*Pre-tax*		*Tax*			*Net*
	*amount*		*impact*			*amount*		*amount*		*impact*			*amount*
Foreign currency translation adjustments	$	3.6	$	(0.1	)	$	3.5	$	38.8	$	(0.4	)	$	38.4
Reclassifications to net income⁽¹⁾		5.9		—			5.9		2.2		—			2.2
Total other comprehensive income (loss)	$	9.5	$	(0.1	)	$	9.4	$	41.0	$	(0.4	)	$	40.6

	*Six months ended June 30,*
	*2024*								*2023*
	*Pre-tax*			*Tax*		*Net*			*Pre-tax*		*Tax*		*Net*
	*amount*			*impact*		*amount*			*amount*		*impact*		*amount*
Foreign currency translation adjustments	$	(22.8	)	$	2.7	$	(20.1	)	$	80.3	$	2.6	$	82.9
Reclassifications to net income⁽¹⁾		(15.7	)		—		(15.7	)		2.3		—		2.3
Total other comprehensive income (loss)	$	(38.5	)	$	2.7	$	(35.8	)	$	82.6	$	2.6	$	85.2

Note 13 - Earnings and Dividends Per Share (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	*Three months ended*						*Six months ended*
	*June 30,*						*June 30,*
	*2024*			*2023*			*2024*			*2023*
Net income attributable to JHG	$	129.7		$	89.8		$	259.8		$	177.2
Allocation of earnings to participating stock-based awards		(3.2	)		(2.7	)		(5.6	)		(5.0	)
Net income attributable to JHG common shareholders	$	126.5		$	87.1		$	254.2		$	172.2

Weighted-average common shares outstanding — basic		155.6			160.5			156.5			160.4
Dilutive effect of nonparticipating stock-based awards		0.2			0.2			0.2			0.2
Weighted-average common shares outstanding — diluted		155.8			160.7			156.7			160.6

Earnings per share:
Basic	$	0.81		$	0.54		$	1.62		$	1.07
Diluted	$	0.81		$	0.54		$	1.62		$	1.07

Dividends Declared [Table Text Block]

*Dividend*		*Date*	*Dividends paid*		*Date*
*per share*		*declared*	*(in US$ millions)*		*paid*
$	0.39	January 31, 2024	$	63.2	February 28, 2024
$	0.39	May 1, 2024	$	62.6	May 29, 2024

Note 2 - Consolidation - VIEs (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Variable Interest Entity, Primary Beneficiary [Member]
Unconsolidated VIEs	$ 15.0	$ 17.2

Note 2 - Consolidation - VREs (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Investments	$ 258.0	$ 334.2
Cash and cash equivalents	1,013.9	1,152.4
Other current assets	109.2	174.5
Accounts payable and accrued liabilities	(214.9)	(231.4)
Variable Rights Entity, Primary Beneficiary, Aggregated Disclosure [Member]
Investments	105.7	242.9
Cash and cash equivalents	28.6	6.5
Other current assets	0.6	21.6
Accounts payable and accrued liabilities	(1.3)	(1.1)
Total	133.6	269.9
Redeemable noncontrolling interests in consolidated VREs	(21.1)	(100.9)
JHG’s net interest in consolidated VREs	$ 112.5	$ 169.0

Note 2 - Consolidation - Unconsolidated VREs (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Unconsolidated VREs [Member]
JHG’s net interest in consolidated VREs	$ 57.6	$ 9.9

Note 3 - Investments (Details Textual)	Jun. 30, 2024
Privacore [Member]
Equity Method Investment, Ownership Percentage	49.00%

Note 3 - Investments - General Disclosure (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Seeded investment products	$ 778.0	$ 696.5
Estimated Fair Value	838.8	746.1
Equity method investments	25.2	29.5
Unconsolidated VIEs and VREs [Member]
Seeded investment products	72.6	27.1
Separately Managed Accounts [Member]
Seeded investment products	44.1	44.1
Investments Related to Deferred Compensation Plans [Member]
Estimated Fair Value	29.5	12.0
Other Security Investments [Member]
Estimated Fair Value	6.1	8.1
Current Investments [Member]
Estimated Fair Value	813.6	716.6
Variable Interest Entity, Primary Beneficiary [Member]
Seeded investment products	555.6	382.4
Voting Rights Entity, Primary Beneficiary Aggregated Disclosure [Member]
Seeded investment products	$ 105.7	$ 242.9

Note 3 - Investments - Investment Gains (Losses), Net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Investment gains, net	$ 6.4	$ 6.9	$ 28.9	$ 24.5
Seeded Investment Products and Hedges, Net [Member]
Investment gains, net	4.6	9.6	16.5	15.0
Third-party Ownership Interests in Seeded Investment Products [Member]
Investment gains, net	3.8	10.6	14.3	19.2
Equity Method Investments [Member]
Investment gains, net	(2.1)	(14.5)	(3.5)	(11.5)
Other Security Investments [Member]
Investment gains, net	$ 0.1	$ 1.2	$ 1.6	$ 1.8

Note 3 - Investments - Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Unrealized gains (losses), net	$ 35.6	$ (2.4)

Note 3 - Investments - Cash Flows (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Investments, net	$ (42.2)	$ (79.2)
Seeded Investment Products [Member]
Purchases and settlements	(103.5)	(204.8)
Sales, settlements and maturities	39.4	41.8
Investments, net	(64.1)	(163.0)
Securities Investment [Member]
Purchases and settlements	(114.8)	(143.2)
Sales, settlements and maturities	72.6	64.0
Investments, net	$ (42.2)	$ (79.2)

Note 4 - Derivative Instruments - Derivative Instruments (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Foreign Currency, Forward Contracts and Swaps [Member]
Notional value of derivative	$ 249.1	$ 176.2
Foreign Currency, Forward Contracts and Swaps [Member] \| Seeded Investment Products [Member]
Notional value of derivative	139.0	135.3
Foreign Currency, Forward Contracts and Swaps [Member] \| Not Designated as Hedging Instrument, Economic Hedge [Member]
Notional value of derivative	42.2	65.3
Futures [Member]
Notional value of derivative	532.5	1,018.0
Futures [Member] \| Seeded Investment Products [Member]
Notional value of derivative	136.7	1,555.1
Credit Default Swaps [Member]
Notional value of derivative	147.8	199.7
Credit Default Swaps [Member] \| Seeded Investment Products [Member]
Notional value of derivative	3.1	13.2
Total Return Swaps [Member]
Notional value of derivative	$ 70.7	$ 51.8

Note 4 - Derivative Instruments - Change in Fair Value of Derivatives (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Gain (losses) from derivative instruments	$ (0.3)	$ 1.6	$ (12.3)	$ (8.5)
Futures [Member]
Gain (losses) from derivative instruments	2.9	3.6	(5.8)	(3.1)
Credit Default Swaps [Member]
Gain (losses) from derivative instruments	(0.1)	(0.6)	(1.5)	(2.5)
Total Return Swaps [Member]
Gain (losses) from derivative instruments	(1.3)	(5.7)	(5.9)	(11.7)
Foreign Currency, Forward Contracts and Swaps [Member]
Gain (losses) from derivative instruments	$ (1.8)	$ 4.3	$ 0.9	$ 8.8

Note 4 - Derivative Instruments - Derivative Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Not Designated as Hedging Instrument [Member]
Derivative liabilities	$ 9.8	$ 16.7

Note 5 - Fair Value Measurements - Level of Fair Value (Details) - USD ($)
$ in Millions

Jun. 30, 2024

Dec. 31, 2023

Total investment securities

$ 258.0

$ 334.2

Variable Interest Entity, Primary Beneficiary [Member]

Total investment securities

555.6

382.4

Fair Value, Recurring [Member]

Cash equivalents

647.1

894.4

Total investment securities

813.6

716.6

Other

7.4

Total assets

1,468.1

1,620.5

Long-term debt

^[1]

298.3

298.0

Other

13.6

20.3

Total liabilities

388.2

435.9

Other

13.6

20.3

Fair Value, Recurring [Member] | Derivatives Used in Consolidated Seeded Investment Products [Member]

Other

9.5

Fair Value, Recurring [Member] | Deferred Bonuses Hedge [Member]

Derivative liabilities

76.3

117.6

Fair Value, Recurring [Member] | Other Investment Securities [Member]

Total investment securities

258.0

334.2

Fair Value, Recurring [Member] | Variable Interest Entity, Primary Beneficiary [Member]

Total investment securities

555.6

382.4

Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]

Cash equivalents

647.1

894.4

Total investment securities

565.4

529.8

Other

0.0

Total assets

1,212.5

1,424.2

Long-term debt

^[1]

0.0

Other

2.4

1.7

Total liabilities

2.4

1.7

Other

2.4

1.7

Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Derivatives Used in Consolidated Seeded Investment Products [Member]

Other

0.0

Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Deferred Bonuses Hedge [Member]

Derivative liabilities

0.0

Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other Investment Securities [Member]

Total investment securities

223.6

212.2

Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Variable Interest Entity, Primary Beneficiary [Member]

Total investment securities

341.8

317.6

Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]

Cash equivalents

0.0

Total investment securities

247.6

186.7

Other

4.0

Total assets

251.6

195.2

Long-term debt

^[1]

298.3

298.0

Other

11.2

18.6

Total liabilities

309.5

316.6

Other

11.2

18.6

Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Derivatives Used in Consolidated Seeded Investment Products [Member]

Other

8.5

Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Deferred Bonuses Hedge [Member]

Derivative liabilities

0.0

Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other Investment Securities [Member]

Total investment securities

34.4

122.0

Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Variable Interest Entity, Primary Beneficiary [Member]

Total investment securities

213.2

64.7

Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]

Cash equivalents

0.0

Total investment securities

0.6

0.1

Other

3.4

Total assets

4.0

1.1

Long-term debt

^[1]

0.0

Other

0.0

Total liabilities

76.3

117.6

Other

0.0

Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Derivatives Used in Consolidated Seeded Investment Products [Member]

Other

1.0

Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Deferred Bonuses Hedge [Member]

Derivative liabilities

76.3

117.6

Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other Investment Securities [Member]

Total investment securities

0.0

Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Variable Interest Entity, Primary Beneficiary [Member]

Total investment securities

$ 0.6

$ 0.1

[1]	Carried at amortized cost in our Condensed Consolidated Balance Sheets and disclosed in this table at fair value.

Note 5 - Fair Value Measurements - Changes in Level 3 Liabilities (Details) - Deferred Bonuses [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Beginning of period fair value	$ 59.0	$ 60.0	$ 117.6	$ 46.5
Fair value adjustments	2.2	1.1	7.7	2.6
Vesting of deferred bonuses	(2.8)	(1.1)	(84.3)	(34.3)
Amortization of deferred bonuses	17.9	17.5	35.5	25.9
Foreign currency translation	0.0	0.7	(0.2)	1.7
Additions	0.0	0.0	0.0	35.8
End of period fair value	$ 76.3	$ 78.2	$ 76.3	$ 78.2

Note 6 - Goodwill and Intangible Assets - Intangible Assets and Goodwill (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Intangible assets, amortization	$ (0.2)	$ (1.0)
Accumulated amortization, balance	(62.1)	(60.7)
Foreign currency translation, accumulated amortization	0.7	(1.7)
Net intangible assets, balance	2,431.3	2,414.7
Net intangible assets	(3.5)	16.6
Goodwill, balance	1,290.3	1,253.1
Goodwill, foreign currency translation	(6.5)	34.2
Accumulated amortization	(61.6)	(63.4)
Net intangible assets, balance	2,427.6	2,430.3
Goodwill, balance	1,283.8	1,287.3
Client Relationships [Member]
Foreign currency translation	(0.9)	1.6
Balance	68.6	68.9
Intangible assets, amortization	0.0	0.0
Balance	67.7	70.5
Investment Management Agreements [Member]
Balance	2,064.8	2,046.5
Foreign currency translation	(3.3)	16.7
Balance	2,061.5	2,063.2
Trademarks [Member]
Balance	360.0	360.0
Foreign currency translation	0.0	0.0
Balance	$ 360.0	$ 360.0

Note 7 - Debt (Details Textual) $ in Thousands	6 Months Ended
Note 7 - Debt (Details Textual) $ in Thousands	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)
Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 200,000
Line of Credit Facility, Option for Additional Capacity, Additional Borrowing Capacity		$ 50,000
Line of Credit Facility, Covenant Terms Financing Leverage Ratio, Upper Range Limit	3
Long-Term Line of Credit, Total	$ 0
Senior Notes, 4.876 Percent, Due 2025 [Member]
Debt Instrument, Interest Rate, Stated Percentage	4.875%
Debt Instrument, Face Amount	$ 300,000
Debt Instrument, Unamortized Premium	$ 3,100

Note 7 - Debt - Schedule of Debt (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Senior Notes, 4.876 Percent, Due 2025 [Member]
4.875% Senior Notes due 2025	$ 303.1	$ 304.6

Note 8 - Income Taxes (Details Textual) $ in Millions	Jun. 30, 2024 USD ($)
Unrecognized Tax Benefits	$ 26.0
Maximum [Member]
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 6.5

Note 8 - Income Taxes - Schedule of Effective Income Tax Rate (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Effective tax rate	23.80%	22.00%	21.30%	21.60%

Note 9 - Noncontrolling Interests - Redeemable Noncontrolling Interest (Details) - USD ($) $ in Millions	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Consolidated seeded investment products	$ 346.7	$ 274.7	$ 317.2	$ 389.8	$ 384.7	$ 233.9
Consolidated Entity, Excluding VIE [Member]
Consolidated seeded investment products	$ 346.7		$ 317.2

Note 9 - Noncontrolling Interests - Schedule of Changes in Noncontrolling Interests (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Opening balance	$ 274.7	$ 384.7	$ 317.2	$ 233.9
Changes in market value	3.8	10.6	14.3	19.2
Changes in ownership	67.8	(4.0)	15.9	136.2
Foreign currency translation	0.4	(1.5)	(0.7)	0.5
Closing balance	$ 346.7	$ 389.8	$ 346.7	$ 389.8

Note 10 - Long-Term Incentive Compensation - Award Activity (Details) - shares shares in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2024
Awards granted (in shares)	1.8	124.0
Restricted Stock [Member]
Awards granted (in shares)	1.7	56.9
Mutual Fund Awards [Member]
Awards granted (in shares)	0.1	67.1

Note 11 - Retirement Benefit Plans - Actuarial Gains (Losses), Benefit Cost, Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Interest cost	$ (6.7)	$ (6.9)	$ (13.5)	$ (13.7)
Amortization of prior service cost	(0.1)	(0.1)	(0.2)	(0.2)
Amortization of net gain	(0.3)	0.0	(0.6)	0.0
Expected return on plan assets	6.5	6.8	13.4	13.4
Net periodic benefit cost	$ (0.6)	$ (0.2)	$ (0.9)	$ (0.5)

Note 12 - Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions

3 Months Ended

6 Months Ended

Jun. 30, 2024

Jun. 30, 2023

Jun. 30, 2024

Jun. 30, 2023

Balance

$ 4,427.4

$ 4,390.7

$ 4,538.3

$ 4,362.6

Total other comprehensive income

9.4

40.6

(35.8)

85.2

Less: other comprehensive loss (income) attributable to noncontrolling interests

0.4

(1.6)

(0.7)

1.6

Balance

4,474.8

4,481.8

4,474.8

4,481.8

Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]

Balance

(523.4)

(536.0)

(478.9)

(577.3)

Other comprehensive income

3.5

38.4

(20.1)

82.9

Reclassifications to net income(1)

^[1]

5.5

2.1

(16.5)

2.1

Total other comprehensive income

9.0

40.5

(36.6)

85.0

Less: other comprehensive loss (income) attributable to noncontrolling interests

(0.4)

1.6

0.7

(1.6)

Balance

(514.8)

(493.9)

(514.8)

(493.9)

Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]

Balance

(84.3)

(70.3)

(84.7)

(70.4)

Other comprehensive income

0.0

Reclassifications to net income(1)

^[1]

0.4

0.1

0.8

0.2

Total other comprehensive income

0.4

0.1

0.8

0.2

Less: other comprehensive loss (income) attributable to noncontrolling interests

0.0

Balance

(83.9)

(70.2)

(83.9)

(70.2)

AOCI Including Portion Attributable to Noncontrolling Interest [Member]

Balance

(607.7)

(606.3)

(563.6)

(647.7)

Other comprehensive income

3.5

38.4

(20.1)

82.9

Reclassifications to net income(1)

^[1]

5.9

2.2

(15.7)

2.3

Total other comprehensive income

9.4

40.6

(35.8)

85.2

Less: other comprehensive loss (income) attributable to noncontrolling interests

(0.4)

1.6

0.7

(1.6)

Balance

$ (598.7)

$ (564.1)

$ (598.7)

$ (564.1)

[1]	Reclassifications to net income are primarily related to the release of accumulated foreign currency translation reserves during the period in which a JHG entity liquidated.

Note 12 - Accumulated Other Comprehensive Loss - Schedule of Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Total other comprehensive loss, pre tax	$ 9.5	$ 41.0	$ (38.5)	$ 82.6
Total other comprehensive loss, tax	(0.1)	(0.4)	2.7	2.6
Total other comprehensive loss, net	9.4	40.6	(35.8)	85.2
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Total other comprehensive loss, pre tax	3.6	38.8	(22.8)	80.3
Total other comprehensive loss, tax	(0.1)	(0.4)	2.7	2.6
Total other comprehensive loss, net	3.5	38.4	(20.1)	82.9
Reclassification to Net Income [Member]
Total other comprehensive loss, pre tax	5.9	2.2	(15.7)	2.3
Total other comprehensive loss, tax	0.0	0.0	0.0	0.0
Total other comprehensive loss, net	$ 5.9	$ 2.2	$ (15.7)	$ 2.3

Note 13 - Earnings and Dividends Per Share (Details Textual) - $ / shares		3 Months Ended
	Jul. 31, 2024	Jun. 30, 2024	Mar. 31, 2024
Common Stock, Dividends, Per Share, Declared (in dollars per share)		$ 0.39	$ 0.39
Subsequent Event [Member]
Common Stock, Dividends, Per Share, Declared (in dollars per share)	$ 0.39

Note 13 - Earnings and Dividends Per Share - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net income attributable to JHG	$ 129.7	$ 89.8	$ 259.8	$ 177.2
Allocation of earnings to participating stock-based awards	(3.2)	(2.7)	(5.6)	(5.0)
Net income attributable to JHG common shareholders	$ 126.5	$ 87.1	$ 254.2	$ 172.2
Weighted-average common shares outstanding — basic (in shares)	155.6	160.5	156.5	160.4
Dilutive effect of nonparticipating stock-based awards (in shares)	0.2	0.2	0.2	0.2
Weighted-average common shares outstanding — diluted (in shares)	155.8	160.7	156.7	160.6
Basic (in dollars per share)	$ 0.81	$ 0.54	$ 1.62	$ 1.07
Diluted (in dollars per share)	$ 0.81	$ 0.54	$ 1.62	$ 1.07

Note 13 - Earnings and Dividends Per Share - Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2024	Jun. 30, 2023
Dividend per share (in dollars per share)	$ 0.39	$ 0.39
Dividends paid	$ 62.6	$ 63.2	$ 125.8	$ 129.3

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