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      </invstOrSec>
      <invstOrSec>
        <name>FED FARM CRD DISCOUNT NT</name>
        <lei>335800QFR6AM34FHIC10</lei>
        <title>Federal Farm Credit Discount Notes</title>
        <cusip>313313XV5</cusip>
        <identifiers>
          <isin value="US313313XV54"/>
        </identifiers>
        <balance>5400000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>5378940.00000000</valUSD>
        <pctVal>0.297582000270</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>USGSE</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2026-06-08</maturityDt>
          <couponKind>None</couponKind>
          <annualizedRt>0.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>United States Treasury</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>U.S. Treasury Floating Rate Notes</title>
        <cusip>91282CPX3</cusip>
        <identifiers>
          <isin value="US91282CPX38"/>
        </identifiers>
        <balance>163512700.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>163524484.36000000</valUSD>
        <pctVal>9.046753291349</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2028-01-31</maturityDt>
          <couponKind>Floating</couponKind>
          <annualizedRt>3.72000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>United States Treasury</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>U.S. Treasury Bills</title>
        <cusip>912797UU9</cusip>
        <identifiers>
          <isin value="US912797UU94"/>
        </identifiers>
        <balance>6300000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>6231155.18000000</valUSD>
        <pctVal>0.344729560556</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2026-08-18</maturityDt>
          <couponKind>None</couponKind>
          <annualizedRt>0.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>United States Treasury</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>U.S. Treasury Notes</title>
        <cusip>91282CAL5</cusip>
        <identifiers>
          <isin value="US91282CAL54"/>
        </identifiers>
        <balance>81000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>77158827.72000000</valUSD>
        <pctVal>4.268699463352</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2027-09-30</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.38000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>United States Treasury</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>U.S. Treasury Bills</title>
        <cusip>912797TU1</cusip>
        <identifiers>
          <isin value="US912797TU14"/>
        </identifiers>
        <balance>9000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>8971239.96000000</valUSD>
        <pctVal>0.496320749478</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2026-06-02</maturityDt>
          <couponKind>None</couponKind>
          <annualizedRt>0.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>State Street Global Advisors</name>
        <lei>549300BZ5TGIFZUZDZ37</lei>
        <title>State Street Institutional U.S. Government Money Market Fund</title>
        <cusip>857492706</cusip>
        <identifiers>
          <isin value="US8574927062"/>
        </identifiers>
        <balance>16389101.06000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>16389101.06000000</valUSD>
        <pctVal>0.906703082031</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>FED HOME LN DISCOUNT NT</name>
        <lei>2549001DPIFGXC1TOL40</lei>
        <title>Federal Home Loan Bank Discount Notes</title>
        <cusip>313385ZG4</cusip>
        <identifiers>
          <isin value="US313385ZG47"/>
        </identifiers>
        <balance>70000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>69482719.60000000</valUSD>
        <pctVal>3.844029991553</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>USGSE</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2026-07-13</maturityDt>
          <couponKind>None</couponKind>
          <annualizedRt>0.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>United States Treasury</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>U.S. Treasury Notes</title>
        <cusip>91282CFH9</cusip>
        <identifiers>
          <isin value="US91282CFH97"/>
        </identifiers>
        <balance>25250000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>25012294.99000000</valUSD>
        <pctVal>1.383768693175</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2027-08-31</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>3.13000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>United States Treasury</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>U.S. Treasury Bills</title>
        <cusip>912797UN5</cusip>
        <identifiers>
          <isin value="US912797UN51"/>
        </identifiers>
        <balance>25000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>24832368.25000000</valUSD>
        <pctVal>1.373814509043</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2026-07-07</maturityDt>
          <couponKind>None</couponKind>
          <annualizedRt>0.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>FED HOME LN DISCOUNT NT</name>
        <lei>2549001DPIFGXC1TOL40</lei>
        <title>Federal Home Loan Bank Discount Notes</title>
        <cusip>313385XK7</cusip>
        <identifiers>
          <isin value="US313385XK76"/>
        </identifiers>
        <balance>39590000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>39475508.10000000</valUSD>
        <pctVal>2.183924836877</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>USGSE</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2026-05-29</maturityDt>
          <couponKind>None</couponKind>
          <annualizedRt>0.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>United States Treasury</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>U.S. Treasury Notes</title>
        <cusip>91282CLQ2</cusip>
        <identifiers>
          <isin value="US91282CLQ23"/>
        </identifiers>
        <balance>170000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>170000000.00000000</valUSD>
        <pctVal>9.405001737498</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2027-10-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>3.88000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>United States Treasury</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>U.S. Treasury Notes</title>
        <cusip>91282CPG0</cusip>
        <identifiers>
          <isin value="US91282CPG05"/>
        </identifiers>
        <balance>145000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>145223099.90000000</valUSD>
        <pctVal>8.034255922849</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2027-10-31</maturityDt>
          <couponKind>Floating</couponKind>
          <annualizedRt>3.81000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>United States Treasury</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>U.S. Treasury Bills</title>
        <cusip>912797TS6</cusip>
        <identifiers>
          <isin value="US912797TS67"/>
        </identifiers>
        <balance>39000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>38929980.18000000</valUSD>
        <pctVal>2.153744301374</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2026-05-19</maturityDt>
          <couponKind>None</couponKind>
          <annualizedRt>0.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>United States Treasury</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>U.S. Treasury Notes</title>
        <cusip>9128283F5</cusip>
        <identifiers>
          <isin value="US9128283F58"/>
        </identifiers>
        <balance>55000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>53670117.05000000</valUSD>
        <pctVal>2.969220847688</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2027-11-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>2.25000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>United States Treasury</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>U.S. Treasury Notes</title>
        <cusip>91282CFZ9</cusip>
        <identifiers>
          <isin value="US91282CFZ95"/>
        </identifiers>
        <balance>89750000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>89739482.20000000</valUSD>
        <pctVal>4.964705800077</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2027-11-30</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>3.88000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>United States Treasury</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>U.S. Treasury Bills</title>
        <cusip>912797UA3</cusip>
        <identifiers>
          <isin value="US912797UA31"/>
        </identifiers>
        <balance>1800000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>1791724.61000000</valUSD>
        <pctVal>0.099124547471</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2026-06-16</maturityDt>
          <couponKind>None</couponKind>
          <annualizedRt>0.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>United States Treasury</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>U.S. Treasury Notes</title>
        <cusip>91282CLT6</cusip>
        <identifiers>
          <isin value="US91282CLT61"/>
        </identifiers>
        <balance>11000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>11008591.66000000</valUSD>
        <pctVal>0.609034256998</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2026-10-31</maturityDt>
          <couponKind>Floating</couponKind>
          <annualizedRt>3.83000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
    </invstOrSecs>
    <explntrNotes>
      <explntrNote note="For purposes of Item C.6 identifying restricted securities,  a security that is subject to Rule 144A under the Securities Act of 1933, as amended, is identified as a restricted security only if the fund cannot sell the security to qualified institutional buyers at the report date due to the restrictions under Rule 144A." noteItem="C.6"/>
      <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>2026-05-19</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>
</edgarSubmission>
