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        <isRestrictedSec>N</isRestrictedSec>

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        <lei>549300JZ4OKEHW3DPJ59</lei>
        <title>Visa Inc</title>
        <cusip>92826C839</cusip>
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          <isin value="US92826C8394"/>
          <ticker value="V"/>
          <other otherDesc="SEDOL" value="B2PZN04"/>
        </identifiers>
        <balance>16870.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>5934528.6000000000</valUSD>
        <pctVal>1.7164822252</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Westinghouse Air Brake Technologies Corp</name>
        <lei>06BTX5UWZD0GQ5N5Y745</lei>
        <title>Westinghouse Air Brake Technologies Corp</title>
        <cusip>929740108</cusip>
        <identifiers>
          <isin value="US9297401088"/>
          <ticker value="WAB"/>
          <other otherDesc="SEDOL" value="2955733"/>
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        <balance>15131.0000000000</balance>
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        <curCd>USD</curCd>
        <valUSD>2927848.5000000000</valUSD>
        <pctVal>0.8468406249</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Spotify Technology SA</name>
        <lei>549300B4X0JHWV0DTD60</lei>
        <title>Spotify Technology SA</title>
        <cusip>L8681T102</cusip>
        <identifiers>
          <isin value="LU1778762911"/>
          <ticker value="SPOT"/>
          <other otherDesc="SEDOL" value="BFZ1K46"/>
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        <balance>6612.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>4508590.5600000000</valUSD>
        <pctVal>1.3040489108</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>SE</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>HubSpot Inc</name>
        <lei>N/A</lei>
        <title>HubSpot Inc</title>
        <cusip>443573100</cusip>
        <identifiers>
          <isin value="US4435731009"/>
          <ticker value="HUBS"/>
          <other otherDesc="SEDOL" value="BR4T3B3"/>
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        <balance>9430.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>4556293.1000000000</valUSD>
        <pctVal>1.3178462260</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Intuit Inc</name>
        <lei>VI90HBPH7XSFMB9E4M29</lei>
        <title>Intuit Inc</title>
        <cusip>461202103</cusip>
        <identifiers>
          <isin value="US4612021034"/>
          <ticker value="INTU"/>
          <other otherDesc="SEDOL" value="2459020"/>
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        <balance>5751.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3835917.0000000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Alnylam Pharmaceuticals Inc</name>
        <lei>N/A</lei>
        <title>Alnylam Pharmaceuticals Inc</title>
        <cusip>02043Q107</cusip>
        <identifiers>
          <isin value="US02043Q1076"/>
          <ticker value="ALNY"/>
          <other otherDesc="SEDOL" value="B00FWN1"/>
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        <balance>31292.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>13972190.9200000000</valUSD>
        <pctVal>4.0412674666</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Alphabet Inc</name>
        <lei>5493006MHB84DD0ZWV18</lei>
        <title>Alphabet Inc-CL C</title>
        <cusip>02079K107</cusip>
        <identifiers>
          <isin value="US02079K1079"/>
          <ticker value="GOOG"/>
          <other otherDesc="SEDOL" value="BYY88Y7"/>
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        <balance>186054.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>39728110.6200000000</valUSD>
        <pctVal>11.4908192908</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Intuitive Surgical Inc</name>
        <lei>54930052SRG011710797</lei>
        <title>Intuitive Surgical Inc</title>
        <cusip>46120E602</cusip>
        <identifiers>
          <isin value="US46120E6023"/>
          <ticker value="ISRG"/>
          <other otherDesc="SEDOL" value="2871301"/>
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        <balance>13874.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>6566494.8300000000</valUSD>
        <pctVal>1.8992699197</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Kinsale Capital Group Inc</name>
        <lei>N/A</lei>
        <title>Kinsale Capital Group Inc</title>
        <cusip>49714P108</cusip>
        <identifiers>
          <isin value="US49714P1084"/>
          <ticker value="KNSL"/>
          <other otherDesc="SEDOL" value="BD1MGQ3"/>
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        <balance>7067.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3232799.1500000000</valUSD>
        <pctVal>0.9350434807</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Amazon.com Inc</name>
        <lei>ZXTILKJKG63JELOEG630</lei>
        <title>Amazon.com Inc</title>
        <cusip>023135106</cusip>
        <identifiers>
          <isin value="US0231351067"/>
          <ticker value="AMZN"/>
          <other otherDesc="SEDOL" value="2000019"/>
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        <balance>155099.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>35517671.0000000000</valUSD>
        <pctVal>10.2730065116</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>AppLovin Corp</name>
        <lei>549300LLVXMUAOL3SQ07</lei>
        <title>AppLovin Corp</title>
        <cusip>03831W108</cusip>
        <identifiers>
          <isin value="US03831W1080"/>
          <ticker value="APP"/>
          <other otherDesc="SEDOL" value="BMV3LG4"/>
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        <balance>2748.0000000000</balance>
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        <curCd>USD</curCd>
        <valUSD>1315165.3200000000</valUSD>
        <pctVal>0.3803938016</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Argenx SE</name>
        <lei>7245009C5FZE6G9ODQ71</lei>
        <title>Argenx SE</title>
        <cusip>04016X101</cusip>
        <identifiers>
          <isin value="US04016X1019"/>
          <ticker value="ARGX"/>
          <other otherDesc="SEDOL" value="BDVLM39"/>
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        <balance>6265.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>4461933.0000000000</valUSD>
        <pctVal>1.2905538419</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>NL</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Ascendis Pharma A/S</name>
        <lei>549300B66JN3W3J8GH73</lei>
        <title>Ascendis Pharma A/S</title>
        <cusip>04351P101</cusip>
        <identifiers>
          <isin value="US04351P1012"/>
          <ticker value="ASND"/>
          <other otherDesc="SEDOL" value="BV9G6B8"/>
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        <balance>48887.0000000000</balance>
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        <curCd>USD</curCd>
        <valUSD>9497277.4900000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>DK</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Cadence Design Systems Inc</name>
        <lei>GCT7RXJOGLXPV0NXZY22</lei>
        <title>Cadence Design Systems Inc</title>
        <cusip>127387108</cusip>
        <identifiers>
          <isin value="US1273871087"/>
          <ticker value="CDNS"/>
          <other otherDesc="SEDOL" value="2302232"/>
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        <balance>30492.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>10685311.5600000000</valUSD>
        <pctVal>3.0905820157</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Cava Group Inc</name>
        <lei>N/A</lei>
        <title>Cava Group Inc</title>
        <cusip>148929102</cusip>
        <identifiers>
          <isin value="US1489291021"/>
          <ticker value="CAVA"/>
          <other otherDesc="SEDOL" value="BRBD9F4"/>
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        <balance>30395.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>2053182.2500000000</valUSD>
        <pctVal>0.5938552284</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Chipotle Mexican Grill Inc</name>
        <lei>N/A</lei>
        <title>Chipotle Mexican Grill Inc</title>
        <cusip>169656105</cusip>
        <identifiers>
          <isin value="US1696561059"/>
          <ticker value="CMG"/>
          <other otherDesc="SEDOL" value="B0X7DZ3"/>
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        <balance>126645.0000000000</balance>
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        <curCd>USD</curCd>
        <valUSD>5336820.3000000000</valUSD>
        <pctVal>1.5436031741</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Constellation Brands Inc</name>
        <lei>5493005GKEG8QCVY7037</lei>
        <title>Constellation Brands Inc</title>
        <cusip>21036P108</cusip>
        <identifiers>
          <isin value="US21036P1084"/>
          <ticker value="STZ"/>
          <other otherDesc="SEDOL" value="2170473"/>
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        <balance>7545.0000000000</balance>
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        <curCd>USD</curCd>
        <valUSD>1221837.3000000000</valUSD>
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        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Docusign Inc</name>
        <lei>549300Q7PVDWRZ39JG09</lei>
        <title>Docusign Inc</title>
        <cusip>256163106</cusip>
        <identifiers>
          <isin value="US2561631068"/>
          <ticker value="DOCU"/>
          <other otherDesc="SEDOL" value="BFYT7B7"/>
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        <balance>41295.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3165674.7000000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>DoorDash Inc</name>
        <lei>N/A</lei>
        <title>DoorDash Inc</title>
        <cusip>25809K105</cusip>
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          <isin value="US25809K1051"/>
          <ticker value="DASH"/>
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        <curCd>USD</curCd>
        <valUSD>4674710.2500000000</valUSD>
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        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>State Street Institutional US Government Money Market Fund</name>
        <lei>549300BZ5TGIFZUZDZ37</lei>
        <title>State Street Institutional US Government Money Market Fund</title>
        <cusip>857492706</cusip>
        <identifiers>
          <isin value="US8574927062"/>
          <ticker value="GVMXX"/>
          <other otherDesc="SEDOL" value="B284MN4"/>
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        <balance>3254629.5200000000</balance>
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        <curCd>USD</curCd>
        <valUSD>3254629.5200000000</valUSD>
        <pctVal>0.9413576203</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2025-10-28</ncom:dateSigned>
      <ncom:nameOfApplicant>American Century ETF Trust</ncom:nameOfApplicant>
      <ncom:signature>Amy R. Bitter</ncom:signature>
      <ncom:signerName>Amy R. Bitter</ncom:signerName>
      <ncom:title>Assistant Treasurer</ncom:title>
    </signature>
  </formData>
</edgarSubmission>
