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          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
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        <classId>C000125332</classId>
      </seriesClassInfo>


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      <regCik>0000355437</regCik>
      <regLei>549300XGRTBJCE41BD26</regLei>
      <regStreet1>6300 BEE CAVE ROAD</regStreet1>
      <regStreet2>BUILDING ONE</regStreet2>
      <regCity>AUSTIN</regCity>
      <regStateConditional regCountry="US" regState="US-TX"/>
      <regZipOrPostalCode>78746</regZipOrPostalCode>
      <regPhone>512-306-7400</regPhone>
      <seriesName>Dimensional VA Global Moderate Allocation Portfolio</seriesName>
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      <repPdEnd>2026-10-31</repPdEnd>
      <repPdDate>2026-07-31</repPdDate>
      <isFinalFiling>N</isFinalFiling>
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      <totLiabs>65533.52</totLiabs>
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        <name>DFA International Real Estate Securities</name>
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        <name>DFA US Core Equity 2 Portfolio</name>
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        <fairValLevel>1</fairValLevel>
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        <name>Emerging Markets Core Equity 2 Portfolio</name>
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        <fairValLevel>1</fairValLevel>
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      </invstOrSec>
      <invstOrSec>
        <name>DFA Two-Year Global Fixed Income Portfolio</name>
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        <title>DFA Two-Year Global Fixed Income Portfolio</title>
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        <fairValLevel>1</fairValLevel>
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        <name>VA Short-Term Fixed Portfolio</name>
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        <fairValLevel>1</fairValLevel>
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      </invstOrSec>
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        <name>DFA VA International Value Portfolio</name>
        <lei>549300D60F35JHOLZC40</lei>
        <title>Dimensional  VA International Value Portfolio</title>
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        <fairValLevel>1</fairValLevel>
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      </invstOrSec>
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        <name>DFA VA U.S. Large Value Portfolio</name>
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        <fairValLevel>1</fairValLevel>
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      </invstOrSec>
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        <fairValLevel>1</fairValLevel>
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      </invstOrSec>
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        <name>State Street Global Advisors</name>
        <lei>549300BZ5TGIFZUZDZ37</lei>
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        <valUSD>108800.55000000</valUSD>
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        <assetCat>STIV</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
    </invstOrSecs>
    <explntrNotes>
      <explntrNote note="Monthly returns presented in Item B.5(a) have been calculated without deducting any applicable sales loads or redemption fees." noteItem="B.5.a"/>
    </explntrNotes>
    <signature>
      <ncom:dateSigned>2026-08-31</ncom:dateSigned>
      <ncom:nameOfApplicant>DFA INVESTMENT DIMENSIONS GROUP INC</ncom:nameOfApplicant>
      <ncom:signature>Randy Olson</ncom:signature>
      <ncom:signerName>Randy Olson</ncom:signerName>
      <ncom:title>Vice President</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
