<SEC-DOCUMENT>0001410368-25-040468-index.html : 20251222
<SEC-HEADER>0001410368-25-040468.hdr.sgml : 20251222
<ACCEPTANCE-DATETIME>20251222101524
ACCESSION NUMBER:		0001410368-25-040468
CONFORMED SUBMISSION TYPE:	NPORT-P
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20251031
FILED AS OF DATE:		20251222
DATE AS OF CHANGE:		20251222
PERIOD START:           	20261031

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DFA INVESTMENT DIMENSIONS GROUP INC
		CENTRAL INDEX KEY:			0000355437
		ORGANIZATION NAME:           	
		EIN:				363129984
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1031

	FILING VALUES:
		FORM TYPE:		NPORT-P
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-03258
		FILM NUMBER:		251590374

	BUSINESS ADDRESS:	
		STREET 1:		6300 BEE CAVE ROAD
		STREET 2:		BUILDING ONE
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78746
		BUSINESS PHONE:		(512) 306-7400

	MAIL ADDRESS:	
		STREET 1:		6300 BEE CAVE ROAD
		STREET 2:		BUILDING ONE
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78746

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DFA SMALL CO FUND INC
		DATE OF NAME CHANGE:	19830621
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000355437
<SERIES-ID>S000000948
<SERIES-NAME>U.S. MICRO CAP PORTFOLIO
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000002699
<CLASS-CONTRACT-NAME>U.S. MICRO CAP PORTFOLIO - INSTITUTIONAL CLASS
<CLASS-CONTRACT-TICKER-SYMBOL>DFSCX
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>NPORT-P
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
</SEC-DOCUMENT>