Form 8-A12B DFA INVESTMENT DIMENSION

October 8, 2026 1:36 PM EDT
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
FORM 8-A
 
FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
PURSUANT TO SECTION 12 (b) OR (g) OF THE
SECURITIES EXCHANGE ACT OF 1934
 
 
DFA INVESTMENT DIMENSIONS GROUP INC.  
(Exact name of registrant as specified in its charter)
 
  
MarylandSee Below    
(State of incorporation or organization)(I.R.S. Employer Identification No.
  
6300 Bee Cave Road, Building One, Austin, TX78746   
(Address of principal executive offices)(Zip Code)
 
 
Securities to be registered pursuant to Section 12(b) of the Act:
 
Title of each class
to be so registered
Name of each exchange on which
each class is to be registered
Shares of common stock, par value of one cent ($0.01)
 
DFA Intermediate Government Fixed Income Portfolio: ETF Class Shares
 
 
The Nasdaq Stock Market LLC
 
If this form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c) or (e), check the following box. [X]
 
If this form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d) or (e), check the following box. [  ]
 
If this form relates to the registration of a class of securities concurrently with a Regulation A offering, check the following box. [  ]
 
Securities Act registration statement or Regulation A offering statement file number to which this form relates: 002-73948
 
Securities to be registered pursuant to Section 12 (g) of the Act:  
 
 
None
(Title of class)


1

 
 
INFORMATION REQUIRED IN REGISTRATION STATEMENT
 
Item 1.
Descriptions of Registrant’s Securities to be Registered.
 
 
 
A description of the class of shares of common stock, par value of one cent ($0.01), of the series of DFA Investment Dimensions Group Inc. (the “Fund”) listed below to be registered hereunder is set forth in Post-Effective Amendment No. 268 to the Fund’s Registration Statement on Form N-1A (Commission File Nos.  002-73948; 811-03258), as filed with the Securities and Exchange Commission on August 28, 2026, which description is incorporated herein by reference.
 
 
 
The class of the series of the Fund that is registering securities, and its I.R.S. Employer Identification Number, is as follows:
 
DFA Intermediate Government Fixed Income Portfolio: ETF Class Shares 
US25239Y1394
 
Item 2.
Exhibits
 
 
SIGNATURE
 
 
 
Pursuant to the requirements of Section 12 of the Securities Exchange Act of 1934, the registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereto duly authorized, as of this 8th day of October 2026.
 
 
 
 
 
 
 
 
 
 
 
DFA INVESTMENT DIMENSIONS GROUP INC.
 
 
 
 
 
 
By:
/s/ Ryan P. Buechner
 
 
 
 
Name:  Ryan P. Buechner
 
 
 
 
 
Title:
Vice President and Assistant Secretary


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