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        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2028-04-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>3.62500000</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 of America</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-7/8% 04/15/29</title>
        <cusip>912810FH6</cusip>
        <identifiers>
          <isin value="US912810FH69"/>
        </identifiers>
        <balance>4929000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>10514844.48000000</valUSD>
        <pctVal>2.759365033733</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>USGA</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2029-04-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>3.87500000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2025-12-31</ncom:dateSigned>
      <ncom:nameOfApplicant>SEI INSTITUTIONAL MANAGED TRUST</ncom:nameOfApplicant>
      <ncom:signature>Glenn Kurdziel</ncom:signature>
      <ncom:signerName>Glenn Kurdziel</ncom:signerName>
      <ncom:title>Controller and Chief Financial Officer</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
