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          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>U.S. Treasury Inflation - Indexed Bonds</name>
        <lei>254900HROIFWPRGM1V77</lei>
        <title>U.S. Treasury Inflation - Indexed Bonds</title>
        <cusip>91282CBF7</cusip>
        <identifiers>
          <isin value="US91282CBF77"/>
        </identifiers>
        <balance>22764191.74000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>21341142.24000000</valUSD>
        <pctVal>5.674144060957</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2031-01-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>0.12500000</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>2026-06-30</ncom:dateSigned>
      <ncom:nameOfApplicant>AIM Investment Securities Funds (Invesco Investment Securities Funds)</ncom:nameOfApplicant>
      <ncom:signature>Adrien Deberghes</ncom:signature>
      <ncom:signerName>Adrien Deberghes</ncom:signerName>
      <ncom:title>Principal Financial Officer and Treasurer</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
