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        </identifiers>
        <balance>208043995.92900000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>4618576709.62000000</valUSD>
        <pctVal>30.46343858836</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</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>Fidelity Salem Street Trust</name>
        <lei>S4W85DGKOEJ24DPRB829</lei>
        <title>Fidelity Series Long-Term Treasury Bond Index Fund</title>
        <cusip>31635V620</cusip>
        <identifiers>
          <isin value="US31635V6204"/>
        </identifiers>
        <balance>99707663.85400000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>537424308.17000000</valUSD>
        <pctVal>3.544770053018</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</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>Fidelity Hereford Street Trust</name>
        <lei>549300KQI5JTFSYJTM18</lei>
        <title>Fidelity Series Treasury Bill Index Fund</title>
        <cusip>31617H854</cusip>
        <identifiers>
          <isin value="US31617H8549"/>
        </identifiers>
        <balance>2455487.68000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>24456657.29000000</valUSD>
        <pctVal>0.161312439799</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</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>
    </invstOrSecs>
    <explntrNotes>
      <explntrNote note="As of March 2025, 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>2026-01-30</ncom:dateSigned>
      <ncom:nameOfApplicant>Laura M. Del Prato</ncom:nameOfApplicant>
      <ncom:signature>Laura M. Del Prato</ncom:signature>
      <ncom:signerName>Laura M. Del Prato</ncom:signerName>
      <ncom:title>President and Treasurer</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
