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        <balance>59869.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3193412.4600000000</valUSD>
        <pctVal>1.7746535245</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>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"/>
        </identifiers>
        <balance>15801.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3799192.4400000000</valUSD>
        <pctVal>2.1112995388</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>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"/>
        </identifiers>
        <balance>3197.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>6159468.0800000000</valUSD>
        <pctVal>3.4229595688</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>Cognex Corp</name>
        <lei>549300JQTYZCLC43S226</lei>
        <title>Cognex Corp</title>
        <cusip>192422103</cusip>
        <identifiers>
          <isin value="US1924221039"/>
          <ticker value="CGNX"/>
          <other otherDesc="SEDOL" value="2208288"/>
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        <balance>31979.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1505571.3200000000</valUSD>
        <pctVal>0.8366809746</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>S&amp;P Global Inc</name>
        <lei>Y6X4K52KMJMZE7I7MY94</lei>
        <title>S&amp;P Global Inc</title>
        <cusip>78409V104</cusip>
        <identifiers>
          <isin value="US78409V1044"/>
          <ticker value="SPGI"/>
          <other otherDesc="SEDOL" value="BYV2325"/>
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        <balance>4566.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1784666.7600000000</valUSD>
        <pctVal>0.9917807973</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>salesforce.com Inc</name>
        <lei>RCGZFPDMRW58VJ54VR07</lei>
        <title>Salesforce Inc</title>
        <cusip>79466L302</cusip>
        <identifiers>
          <isin value="US79466L3024"/>
          <ticker value="CRM"/>
          <other otherDesc="SEDOL" value="2310525"/>
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        <balance>27261.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>6037221.0600000000</valUSD>
        <pctVal>3.3550240586</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>26007.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>6776383.9200000000</valUSD>
        <pctVal>3.7657940393</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>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>47653.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>2396945.9000000000</valUSD>
        <pctVal>1.3320385458</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>Meta Platforms Inc</name>
        <lei>BQ4BKCS1HXDV9HN80Z93</lei>
        <title>Meta Platforms Inc</title>
        <cusip>30303M102</cusip>
        <identifiers>
          <isin value="US30303M1027"/>
          <ticker value="META"/>
          <other otherDesc="SEDOL" value="B7TL820"/>
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        <balance>26858.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>7947013.6200000000</valUSD>
        <pctVal>4.4163401711</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>Graco Inc</name>
        <lei>4T5VJ4S81BRT6Q7GGT78</lei>
        <title>Graco Inc</title>
        <cusip>384109104</cusip>
        <identifiers>
          <isin value="US3841091040"/>
          <ticker value="GGG"/>
          <other otherDesc="SEDOL" value="2380443"/>
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        <balance>30074.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>2374041.5600000000</valUSD>
        <pctVal>1.3193100717</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>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>7416.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>4052992.3200000000</valUSD>
        <pctVal>2.2523420308</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>Intercontinental Exchange Inc</name>
        <lei>5493000F4ZO33MV32P92</lei>
        <title>Intercontinental Exchange Inc</title>
        <cusip>45866F104</cusip>
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          <isin value="US45866F1049"/>
          <ticker value="ICE"/>
          <other otherDesc="SEDOL" value="BFSSDS9"/>
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        <balance>8980.0000000000</balance>
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        <curCd>USD</curCd>
        <valUSD>1059550.2000000000</valUSD>
        <pctVal>0.5888166719</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>17898.0000000000</balance>
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        <curCd>USD</curCd>
        <valUSD>5596346.6400000000</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>Keysight Technologies Inc</name>
        <lei>549300GLKVIO8YRCYN02</lei>
        <title>Keysight Technologies Inc</title>
        <cusip>49338L103</cusip>
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          <isin value="US49338L1035"/>
          <ticker value="KEYS"/>
          <other otherDesc="SEDOL" value="BQZJ0Q9"/>
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        <balance>28307.0000000000</balance>
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        <curCd>USD</curCd>
        <valUSD>3773323.1000000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
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          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Mastercard Inc</name>
        <lei>AR5L2ODV9HN37376R084</lei>
        <title>Mastercard Inc</title>
        <cusip>57636Q104</cusip>
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          <isin value="US57636Q1040"/>
          <ticker value="MA"/>
          <other otherDesc="SEDOL" value="B121557"/>
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        <balance>13768.0000000000</balance>
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        <curCd>USD</curCd>
        <valUSD>5681227.5200000000</valUSD>
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        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
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          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      <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>657861.2400000000</balance>
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        <curCd>USD</curCd>
        <valUSD>657861.2400000000</valUSD>
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        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
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          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Silk Road Medical Inc</name>
        <lei>N/A</lei>
        <title>Silk Road Medical Inc</title>
        <cusip>82710M100</cusip>
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          <isin value="US82710M1009"/>
          <ticker value="SILK"/>
          <other otherDesc="SEDOL" value="BGHVXJ7"/>
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        <balance>25600.0000000000</balance>
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        <curCd>USD</curCd>
        <valUSD>494592.0000000000</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>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Block Inc</name>
        <lei>549300OHIIUWSTIZME52</lei>
        <title>Block Inc</title>
        <cusip>852234103</cusip>
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          <isin value="US8522341036"/>
          <ticker value="SQ"/>
          <other otherDesc="SEDOL" value="BYNZGK1"/>
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        <balance>44614.0000000000</balance>
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        <curCd>USD</curCd>
        <valUSD>2571997.1000000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Tesla Inc</name>
        <lei>54930043XZGB27CTOV49</lei>
        <title>Tesla Inc</title>
        <cusip>88160R101</cusip>
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          <isin value="US88160R1014"/>
          <ticker value="TSLA"/>
          <other otherDesc="SEDOL" value="B616C79"/>
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        <balance>48677.0000000000</balance>
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        <curCd>USD</curCd>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Verisk Analytics Inc</name>
        <lei>549300I1YSWNIRKBWP67</lei>
        <title>Verisk Analytics Inc</title>
        <cusip>92345Y106</cusip>
        <identifiers>
          <isin value="US92345Y1064"/>
          <ticker value="VRSK"/>
          <other otherDesc="SEDOL" value="B4P9W92"/>
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        <balance>6348.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1537612.5600000000</valUSD>
        <pctVal>0.8544870364</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>
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      </invstOrSec>
      <invstOrSec>
        <name>Visa Inc</name>
        <lei>549300JZ4OKEHW3DPJ59</lei>
        <title>Visa Inc</title>
        <cusip>92826C839</cusip>
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        <balance>22949.0000000000</balance>
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        <curCd>USD</curCd>
        <valUSD>5638110.3200000000</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>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>32777.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3688068.0400000000</valUSD>
        <pctVal>2.0495451269</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>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2023-10-25</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>
