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      <invstOrSec>
        <name>Kite Realty Group Trust</name>
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      <invstOrSec>
        <name>American Tower Corp.</name>
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        <name>Host Hotels &amp; Resorts, Inc.</name>
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        <name>Hilton Worldwide Holdings Inc.</name>
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        <name>Healthpeak Properties, Inc.</name>
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        <name>SBA Communications Corp.</name>
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        <name>Extra Space Storage Inc.</name>
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        <name>Highwoods Properties, Inc.</name>
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      <invstOrSec>
        <name>Agree Realty Corp.</name>
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        <name>Equity Residential</name>
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        <name>Equity LifeStyle Properties, Inc.</name>
        <lei>529900PEQG66LENB6798</lei>
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        <name>Simon Property Group, Inc.</name>
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        <name>Equinix, Inc.</name>
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        <name>Prologis, Inc.</name>
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        <name>Americold Realty Trust, Inc.</name>
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        <name>Camden Property Trust</name>
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        <name>OUTFRONT Media Inc.</name>
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        <name>Alexandria Real Estate Equities, Inc.</name>
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        <name>CubeSmart</name>
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        <title>CubeSmart</title>
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        <name>Invesco Private Prime Fund</name>
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        <name>Digital Realty Trust, Inc.</name>
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        <name>Lamar Advertising Co.</name>
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        <title>Lamar Advertising Co., Class A</title>
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        <fairValLevel>1</fairValLevel>
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        <name>Realty Income Corp.</name>
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        <fairValLevel>1</fairValLevel>
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        <name>Invesco Government &amp; Agency Portfolio</name>
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        <fairValLevel>1</fairValLevel>
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        <name>Invesco Private Government Fund</name>
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          <other otherDesc="CADIS_ID" value="2442116"/>
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        <fairValLevel>2</fairValLevel>
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        <name>Public Storage</name>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Crown Castle Inc.</name>
        <lei>54930012H97VSM0I2R19</lei>
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        <fairValLevel>1</fairValLevel>
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      </invstOrSec>
      <invstOrSec>
        <name>Rexford Industrial Realty, Inc.</name>
        <lei>549300MSLO0DF0EMX355</lei>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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      </invstOrSec>
      <invstOrSec>
        <name>Kimco Realty Corp.</name>
        <lei>254900ARY41P4V1JL861</lei>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Invitation Homes Inc.</name>
        <lei>984500FE452E665C9F85</lei>
        <title>Invitation Homes Inc.</title>
        <cusip>46187W107</cusip>
        <identifiers>
          <isin value="US46187W1071"/>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2024-12-30</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>
