JANUARY 28, 2014
Summary Prospectus
BlackRock Funds SM    |   Investor and Institutional Shares
► BlackRock Small Cap Growth Equity Portfolio
  Investor A: CSGEX • Investor B: CSGBX • Investor C: CGICX • Institutional: PSGIX
Before you invest, you may want to review the Fund’s prospectus, which contains more information about the Fund and its risks. You can find the Fund’s prospectus (including amendments and supplements) and other information about the Fund, including the Fund’s statement of additional information and shareholder report, online at http://www.blackrock.com/prospectus. You can also get this information at no cost by calling (800) 441-7762 or by sending an e-mail request to prospectus.request@blackrock.com , or from your financial professional. The Fund’s prospectus and statement of additional information, both dated January 28, 2014, as amended and supplemented from time to time, are incorporated by reference into (legally made a part of) this Summary Prospectus.
This Summary Prospectus contains information you should know before investing, including information about risks. Please read it before you invest and keep it for future reference.
The Securities and Exchange Commission has not approved or disapproved these securities or passed upon the adequacy of this Summary Prospectus. Any representation to the contrary is a criminal offense.
Not FDIC Insured • May Lose Value • No Bank Guarantee

Summary Prospectus
Key Facts About BlackRock Small Cap Growth Equity Portfolio
Investment Objective
The investment objective of BlackRock Small Cap Growth Equity Portfolio (“Small Cap Growth Equity” or the “Fund”), a series of BlackRock Funds SM (the “Trust”), is to seek long-term capital growth.
Fees and Expenses of the Fund
This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the fund complex advised by BlackRock Advisors, LLC (“BlackRock”) and its affiliates. More information about these and other discounts is available from your financial professional or your selected securities dealer, broker, investment adviser, service provider or industry professional (including BlackRock, The PNC Financial Services Group, Inc. and their respective affiliates) (each a “Financial Intermediary”) and in the “Details About the Share Classes” section on page 23 of the Fund’s prospectus and in the “Purchase of Shares” section on page II-60 of the Fund’s statement of additional information.
Shareholder Fees
(fees paid directly from your investment) 		Investor A
Shares 		Investor B
Shares 		Investor C
Shares 		Institutional
Shares
Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price) 5.25% None None None
Maximum Deferred Sales Charge (Load) (as percentage of offering price or redemption proceeds, whichever is lower) None 1 4.50% 2 1.00% 3 None
Annual Fund Operating Expenses
(expenses that you pay each year as a
percentage of the value of your investment) 		Investor A
Shares 		Investor B
Shares 		Investor C
Shares 		Institutional
Shares
Management Fee 0.54% 0.54% 0.54% 0.54%
Distribution and/or Service (12b-1) Fees 0.25% 1.00% 1.00% None
Other Expenses 0.35% 0.44% 0.41% 0.28%
Total Annual Fund Operating Expenses 1.14% 1.98% 1.95% 0.82%
Fee Waivers and/or Expense Reimbursements 4 — — — —
Total Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements 4 1.14% 1.98% 1.95% 0.82%
  
1 A contingent deferred sales charge (“CDSC”) of 1.00% is assessed on certain redemptions of Investor A Shares made within 18 months after purchase where no initial sales charge was paid at time of purchase as part of an investment of $1,000,000 or more.
2 The CDSC is 4.50% if shares are redeemed in less than one year. The CDSC for Investor B Shares decreases for redemptions made in subsequent years. After six years there is no CDSC on Investor B Shares. (See the section “Details About the Share Classes — Investor B Shares” in the Fund’s prospectus for the complete schedule of CDSCs.)
3 There is no CDSC on Investor C Shares after one year.
4 As described in the “Management of the Funds” section of the Fund’s prospectus on pages 38–43, BlackRock has contractually agreed to waive and/or reimburse fees or expenses in order to limit Total Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements (excluding Dividend Expense, Interest Expense, Acquired Fund Fees and Expenses and certain other Fund expenses) as a percentage of average daily net assets to 1.50% (for Investor A Shares), 2.28% (for Investor B and Investor C Shares) and 1.02% (for Institutional Shares) until February 1, 2015. The Fund may have to repay some of these waivers and/or reimbursements to BlackRock in the following two years. The agreement may be terminated upon 90 days’ notice by a majority of the non-interested trustees of the Trust or by a vote of a majority of the outstanding voting securities of the Fund.
Example:
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
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  1 Year 3 Years 5 Years 10 Years
Investor A Shares $635 $868 $1,120 $1,838
Investor B Shares $651 $971 $1,268 $2,089
Investor C Shares $298 $612 $1,052 $2,275
Institutional Shares $ 84 $262 $ 455 $1,014
  
You would pay the following expenses if you did not redeem your shares:
  1 Year 3 Years 5 Years 10 Years
Investor B Shares $201 $621 $1,068 $2,089
Investor C Shares $198 $612 $1,052 $2,275
  
Portfolio Turnover:
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 175% of the average value of its portfolio.
Principal Investment Strategies of the Fund
Under normal circumstances, the Fund will invest at least 80% of its net assets (plus any borrowings for investment purposes) in equity securities of small cap companies and at least 80% of its net assets (plus any borrowings for investment purposes) in securities or instruments of issuers located in the United States. Equity securities consist primarily of common stock, preferred stock, securities convertible into common stock and securities or other instruments whose price is linked to the value of common stock, such as derivatives. The Fund seeks to buy primarily common stock but also can invest in preferred stock, convertible securities and other equity securities. The Fund management team focuses on small capitalization companies that Fund management believes have above average prospects for earnings growth. Although a universal definition of small-capitalization companies does not exist, the Fund generally defines these companies as those with market capitalizations, at the time of the Fund’s investment, comparable in size to the companies in the Russell 2000 ® Index (between approximately $129 million and $3.3 billion as of May 31, 2013) or to the companies at the time of their entry in the S&P SmallCap 600 ® Index (between $350 million and $1.6 billion as of June 28, 2013). In the future, the Fund may define small-capitalization companies using a different index or classification system.
From time to time the Fund may invest in shares of companies through “new issues” or initial public offerings (“IPOs”).
The Fund may use derivatives, including options, warrants, futures, indexed securities, inverse securities, swaps and forward contracts both to seek to increase the return of the Fund and to hedge (or protect) the value of its assets against adverse movements in currency exchange rates, interest rates and movements in the securities markets. In order to manage cash flows into or out of the Fund effectively, the Fund may buy and sell financial futures contracts or options on such contracts. Derivatives are financial instruments whose value is derived from another security, a commodity (such as oil or gas), a currency or an index, including but not limited to the Russell 2000 ® Index. The use of options, futures, indexed securities, inverse securities, swaps and forward contracts can be effective in protecting or enhancing the value of the Fund’s assets.
Principal Risks of Investing in the Fund
Risk is inherent in all investing. The value of your investment in Small Cap Growth Equity, as well as the amount of return you receive on your investment, may fluctuate significantly from day to day and over time. You may lose part or all of your investment in the Fund or your investment may not perform as well as other similar investments. The following is a summary description of principal risks of investing in the Fund.
■ Convertible Securities Risk — The market value of a convertible security performs like that of a regular debt security; that is, if market interest rates rise, the value of a convertible security usually falls. In addition, convertible securities are subject to the risk that the issuer will not be able to pay interest or dividends when due, and their market value may change based on changes in the issuer’s credit rating or the market’s perception of the issuer’s
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  creditworthiness. Since it derives a portion of its value from the common stock into which it may be converted, a convertible security is also subject to the same types of market and issuer risks that apply to the underlying common stock.
■ Derivatives Risk — The Fund’s use of derivatives may reduce the Fund’s returns and/or increase volatility. Volatility is defined as the characteristic of a security, an index or a market to fluctuate significantly in price within a short time period. A risk of the Fund’s use of derivatives is that the fluctuations in their values may not correlate perfectly with the overall securities markets. Derivatives are also subject to counterparty risk, which is the risk that the other party in the transaction will not fulfill its contractual obligation. The possible lack of a liquid secondary market for derivatives and the resulting inability of the Fund to sell or otherwise close a derivatives position could expose the Fund to losses and could make derivatives more difficult for the Fund to value accurately. Valuation may be more difficult in times of market turmoil since many investors and market makers may be reluctant to purchase complex instruments or quote prices for them. Derivatives also may expose the Fund to greater risk and increase its costs. Certain transactions in derivatives involve substantial leverage risk and may expose the Fund to potential losses that exceed the amount originally invested by the Fund. Recent legislation calls for new regulation of the derivatives markets. The extent and impact of the regulation is not yet known and may not be known for some time. New regulation may make derivatives more costly, may limit the availability of derivatives, or may otherwise adversely affect the value or performance of derivatives.
■ Equity Securities Risk — Stock markets are volatile. The price of an equity security fluctuates based on changes in a company’s financial condition and overall market and economic conditions.
■ High Portfolio Turnover Risk — The Fund may engage in active and frequent trading of its portfolio securities. High portfolio turnover (more than 100%) may result in increased transaction costs to the Fund, including brokerage commissions, dealer mark-ups and other transaction costs on the sale of the securities and on reinvestment in other securities. The sale of Fund portfolio securities may result in the realization and distribution to shareholders of higher capital gains or losses as compared to a fund with less active trading policies. Given the frequency of sales, such gain or loss will likely be short-term capital gain or loss and would increase an investor’s tax liability unless shares are held through a tax-deferred or tax-exempt vehicle. These effects of higher than normal portfolio turnover may adversely affect Fund performance.
■ Investment Style Risk — Under certain market conditions, growth investments have performed better during the later stages of economic expansion. Therefore, this investment style may over time go in and out of favor. At times when the investment style used by the Fund is out of favor, the Fund may underperform other equity funds that use different investment styles.
■ Leverage Risk — Some transactions may give rise to a form of economic leverage. These transactions may include, among others, derivatives, and may expose the Fund to greater risk and increase its costs. The use of leverage may cause the Fund to liquidate portfolio positions when it may not be advantageous to do so to satisfy its obligations or to meet any required asset segregation requirements. Increases and decreases in the value of the Fund’s portfolio will be magnified when the Fund uses leverage.
■ Market Risk and Selection Risk — Market risk is the risk that one or more markets in which the Fund invests will go down in value, including the possibility that the markets will go down sharply and unpredictably. Selection risk is the risk that the securities selected by Fund management will underperform the markets, the relevant indices or the securities selected by other funds with similar investment objectives and investment strategies. This means you may lose money.
■ “New Issues” Risk — “New issues” are initial public offerings of equity securities. Securities issued in IPOs have no trading history, and information about the companies may be available for very limited periods. In addition, the prices of securities sold in IPOs may be highly volatile or may decline shortly after the initial public offering.
■ Small Cap and Emerging Growth Securities Risk — Small cap or emerging growth companies may have limited product lines or markets. They may be less financially secure than larger, more established companies. They may depend on a more limited management group than larger capitalized companies.
Performance Information
The information shows you how Small Cap Growth Equity’s performance has varied year by year and provides some indication of the risks of investing in the Fund. The table compares the Fund’s performance to that of the Russell 2000 ® Growth Index. As with all such investments, past performance (before and after taxes) is not an indication of future results. Sales charges are not reflected in the bar chart. If they were, returns would be less than those shown. However, the table includes all applicable fees and sales charges. If BlackRock and its affiliates had not waived or reimbursed certain Fund expenses during these periods, the Fund’s returns would have been lower. Updated
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information on the Fund’s performance, including its current net asset value, can be obtained by visiting http://www.blackrock.com/funds or can be obtained by phone at (800) 882-0052.
Investor A Shares
ANNUAL TOTAL RETURNS 1
BlackRock Small Cap Growth Equity Portfolio
As of 12/31
During the ten-year period shown in the bar chart, the highest return for a quarter was 26.00% (quarter ended June 30, 2009) and the lowest return for a quarter was –28.84% (quarter ended December 31, 2008).
As of 12/31/13
Average Annual Total Returns 		1 Year 5 Years 1 10 Years 1
BlackRock Small Cap Growth Equity Portfolio — Investor A      
Return Before Taxes 37.34% 20.05% 9.07%
Return After Taxes on Distributions 22.76% 16.71% 7.54%
Return After Taxes on Distributions and Sale of Shares 26.63% 15.54% 7.06 %
BlackRock Small Cap Growth Equity Portfolio — Investor B      
Return Before Taxes 39.84% 20.13% 8.92%
BlackRock Small Cap Growth Equity Portfolio — Investor C      
Return Before Taxes 42.91% 20.33% 8.72%
BlackRock Small Cap Growth Equity Portfolio — Institutional      
Return Before Taxes 45.32% 21.81% 10.04%
Russell 2000 ® Growth Index
(Reflects no deduction for fees, expenses or taxes) 		43.30% 22.58% 9.41%
  
1 A portion of the Fund’s total return was attributable to proceeds received in the fiscal year ended September 30, 2009 in settlement of litigation.
After-tax returns are calculated using the historical highest individual Federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Investor A Shares only, and the after-tax returns for Investor B, Investor C and Institutional Shares will vary.
Investment Manager
Small Cap Growth Equity’s investment manager is BlackRock Advisors, LLC (previously defined as “BlackRock”).
Portfolio Manager
Name Portfolio Manager
of the Fund Since 		Title
Travis Cooke, CFA 2013 Managing Director of BlackRock, Inc.
  
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Purchase and Sale of Fund Shares
You may purchase or redeem shares of the Fund each day the New York Stock Exchange is open. To purchase or sell shares you should contact your Financial Intermediary, or, if you hold your shares through the Fund, you should contact the Fund by phone at (800) 441-7762, by mail (c/o BlackRock Funds, P.O. Box 9819, Providence, Rhode Island 02940-8019), or by the Internet at www.blackrock.com/funds. The Fund’s initial and subsequent investment minimums generally are as follows, although the Fund may reduce or waive the minimums in some cases:
  Investor A and
Investor C Shares 		Investor B Shares Institutional Shares
Minimum Initial Investment $1,000 for all accounts except:
• $250 for certain fee-based programs.
• $100 for certain employer-sponsored retirement plans.
• $50, if establishing an Automatic Investment Plan. 		Available only through exchanges and dividend reinvestments by current holders and for purchase by certain employer-sponsored retirement plans. $2 million for institutions and individuals.
Institutional Shares are available to clients of registered investment advisers who have $250,000 invested in the Fund.
Minimum Additional
Investment 		$50 for all accounts (with the exception of certain employer-sponsored retirement plans which may have a lower minimum). N/A No subsequent minimum.
  
Tax Information
The Fund’s dividends and distributions may be subject to Federal income taxes and may be taxed as ordinary income or capital gains, unless you are a tax-exempt investor or are investing through a retirement plan, in which case you may be subject to Federal income tax upon withdrawal from such tax-deferred arrangements.
Payments to Broker/Dealers and Other Financial Intermediaries
If you purchase shares of the Fund through a Financial Intermediary, the Fund and BlackRock Investments, LLC, the Fund’s distributor, or its affiliates may pay the Financial Intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the Financial Intermediary and your individual financial professional to recommend the Fund over another investment. Ask your individual financial professional or visit your Financial Intermediary’s website for more information.
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