As filed with the U.S. Securities and Exchange Commission on April 9, 2013

File No. 002-73948

File No. 811-03258

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

 

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

  x           

Pre-Effective Amendment No.__

  ¨  

Post-Effective Amendment No. 162

  x  
And/or    

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940

  ¨  

Amendment No. 163

  x  

(Check appropriate box or boxes.)

DFA INVESTMENT DIMENSIONS GROUP INC.

(Exact Name of Registrant as Specified in Charter)

6300 Bee Cave Road, Building One, Austin, TX 78746

(Address of Principal Executive Office)        (Zip Code)

Registrant’s Telephone Number, including Area Code (512) 306-7400

Catherine L. Newell, Esquire, Vice President and Secretary

DFA Investment Dimensions Group Inc.,

6300 Bee Cave Road, Building One, Austin, TX 78746

(Name and Address of Agent for Service)

Please send copies of all communications to:

Jana L. Cresswell, Esquire

Stradley, Ronon, Stevens & Young, LLP

2600 One Commerce Square

Philadelphia, PA 19103

(215) 564-8048

Approximate Date of Proposed Public Offering: As soon as practicable following effective date.

It is proposed that this filing will become effective (check appropriate box)

 

  x immediately upon filing pursuant to paragraph (b)
  ¨ on (date) pursuant to paragraph (b)
  ¨ 60 days after filing pursuant to paragraph (a)(1)
  ¨ on (date) pursuant to paragraph (a)(1)
  ¨ 75 days after filing pursuant to paragraph (a)(2)
  ¨ on (date) pursuant to paragraph (a)(2) of rule 485.

If appropriate, check the following box:

 

  ¨ this post-effective amendment designates a new effective date for a previously filed post-effective amendment.


SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all the requirements for effectiveness of this Registration Statement under Rule 485(b) under the Securities Act and has duly caused this Post-Effective Amendment Nos. 162/163 to its Registration Statement on Form N-1A to be signed on its behalf by the undersigned, hereunto duly authorized in the City of Austin, the State of Texas on this 9th day of April, 2013.

 

  

DFA INVESTMENT DIMENSIONS GROUP INC.

(Registrant)

  
   By:    /s/ David G. Booth                  *   
     

David G. Booth, President

(Signature and Title)

  

Pursuant to the requirements of the Securities Act of 1933, Post-Effective Amendment Nos. 162/163 to this Registration Statement has been signed below by the following persons in the capacities and on the date indicated:

 

NAME     

TITLE

  DATE
/s/ David G. Booth  

*

  

President, Director, Chairman

 

April 9, 2013

David G. Booth     

and Co-Chief Executive Officer

 
/s/ Eduardo A. Repetto  

*

  

Director, Co-Chief Executive

 

April 9, 2013

Eduardo A. Repetto     

Officer and Chief Investment Officer

 
/s/ David R. Martin  

*

  

Chief Financial Officer

 

April 9, 2013

David R. Martin     

Treasurer and Vice President

 
/s/ George M. Constantinides  

*

  

Director

 

April 9, 2013

George M. Constantinides       
/s/ John P. Gould  

*

  

Director

 

April 9, 2013

John P. Gould       
/s/ Roger G. Ibbotson  

*

  

Director

 

April 9, 2013

Roger G. Ibbotson       
/s/ Edward P. Lazear  

*

  

Director

 

April 9, 2013

Edward P. Lazear       
/s/ Myron S. Scholes  

*

  

Director

 

April 9, 2013

Myron S. Scholes       
/s/ Abbie J. Smith  

*

  

Director

 

April 9, 2013

Abbie J. Smith       
*By:   /s/ Carolyn L. O                                     
  Carolyn L. O
  Attorney-In-Fact (Pursuant to a Power of Attorney)


EXHIBIT INDEX

 

 

Index No.

  

Description of Exhibit

EX-101.INS   

XBRL Instance Document

EX-101.SCH   

XBRL Taxonomy Extension Schema Document

EX-101.CAL   

XBRL Taxonomy Extension Calculation Linkbase

EX-101.DEF   

XBRL Taxonomy Extension Definition Linkbase

EX-101.LAB   

XBRL Taxonomy Extension Labels Linkbase

EX-101.PRE   

XBRL Taxonomy Extension Presentation Linkbase