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      <invstOrSec>
        <name>SBA Communications Corp.</name>
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        <name>Apple Hospitality REIT, Inc.</name>
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        <fairValLevel>1</fairValLevel>
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        <name>Outfront Media, Inc.</name>
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        <fairValLevel>1</fairValLevel>
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        <name>Gaming and Leisure Properties, Inc.</name>
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        <fairValLevel>1</fairValLevel>
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        <name>Sun Communities, Inc.</name>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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        <name>Invesco Government &amp; Agency Portfolio</name>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Life Storage, Inc.</name>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Camden Property Trust</name>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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        <name>American Homes 4 Rent</name>
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        <title>American Homes 4 Rent, Class A</title>
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        <fairValLevel>1</fairValLevel>
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        <name>BGP Holdings PLC</name>
        <lei>N/A</lei>
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        <invCountry>MT</invCountry>
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        <fairValLevel>3</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Simon Property Group, Inc.</name>
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        <fairValLevel>1</fairValLevel>
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        <name>Essential Properties Realty Trust, Inc.</name>
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        <fairValLevel>1</fairValLevel>
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        <name>UDR, Inc.</name>
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        <name>Weyerhaeuser Co.</name>
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        <name>Regency Centers Corp.</name>
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        <name>Ventas, Inc.</name>
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        <name>Invesco Private Government Fund</name>
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        <name>Xenia Hotels &amp; Resorts, Inc.</name>
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        <name>CyrusOne, Inc.</name>
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        <name>Invitation Homes, Inc.</name>
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        <name>Sunstone Hotel Investors, Inc.</name>
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        <name>Urban Edge Properties</name>
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        <name>Alexandria Real Estate Equities, Inc.</name>
        <lei>MGCJBT4MKTQBVLNUIS88</lei>
        <title>Alexandria Real Estate Equities, Inc.</title>
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        <name>NETSTREIT Corp.</name>
        <lei>N/A</lei>
        <title>NETSTREIT Corp.</title>
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        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Invesco Private Prime Fund</name>
        <lei>N/A</lei>
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        <cusip>N/A</cusip>
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          <other otherDesc="CADIS_ID" value="2487474"/>
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        <fairValLevel>2</fairValLevel>
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          <cashCollateralCondition cashCollateralVal="42124162.11000000" isCashCollateral="Y"/>
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      <invstOrSec>
        <name>Rexford Industrial Realty, Inc.</name>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Duke Realty Corp.</name>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Crown Castle International Corp.</name>
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        <fairValLevel>1</fairValLevel>
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        <name>Welltower, Inc.</name>
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        <assetCat>EC</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>AvalonBay Communities, Inc.</name>
        <lei>K9G90K85RBWD2LAGQX17</lei>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>VICI Properties, Inc.</name>
        <lei>254900RKH6RY9KCJQH63</lei>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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        <name>Americold Realty Trust</name>
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        <fairValLevel>1</fairValLevel>
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        <name>Prologis, Inc.</name>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Invesco Liquid Assets Portfolio</name>
        <lei>549300DC1W0JSX3QRC47</lei>
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        <curCd>USD</curCd>
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        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Ryman Hospitality Properties, Inc.</name>
        <lei>529900GCCWW9SRMPJR11</lei>
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        <cusip>78377T107</cusip>
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        <balance>391431.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>30296759.40000000</valUSD>
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        <assetCat>EC</assetCat>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
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        <name>Equity Residential</name>
        <lei>5493008RACSH5EP3PI59</lei>
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        <balance>285846.00000000</balance>
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        <curCd>USD</curCd>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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        <name>JBG SMITH Properties</name>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>American Tower Corp.</name>
        <lei>5493006ORUSIL88JOE18</lei>
        <title>American Tower Corp.</title>
        <cusip>03027X100</cusip>
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          <isin value="US03027X1000"/>
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        <balance>587548.00000000</balance>
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        <fairValLevel>1</fairValLevel>
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        <name>RLJ Lodging Trust</name>
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      <invstOrSec>
        <name>Brixmor Property Group, Inc.</name>
        <lei>5299007UXW6Y0W2EGZ95</lei>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>SITE Centers Corp.</name>
        <lei>W2AVA6SODOQ1LCYJQR54</lei>
        <title>SITE Centers Corp.</title>
        <cusip>82981J109</cusip>
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          <isin value="US82981J1097"/>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>PotlatchDeltic Corp.</name>
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      </invstOrSec>
      <invstOrSec>
        <name>Equinix, Inc.</name>
        <lei>549300EVUN2BTLJ3GT74</lei>
        <title>Equinix, Inc.</title>
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          <isin value="US29444U7000"/>
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        <assetCat>EC</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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      </invstOrSec>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2021-12-30</ncom:dateSigned>
      <ncom:nameOfApplicant>AIM Investment Securities Funds (Invesco Investment Securities Funds)</ncom:nameOfApplicant>
      <ncom:signature>Sheri Morris</ncom:signature>
      <ncom:signerName>Sheri Morris</ncom:signerName>
      <ncom:title>President</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
