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        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Bright Horizons Family Solutions Inc</name>
        <lei>N/A</lei>
        <title>Bright Horizons Family Solutions Inc</title>
        <cusip>109194100</cusip>
        <identifiers>
          <isin value="US1091941005"/>
          <ticker value="BFAM"/>
          <other otherDesc="SEDOL" value="B7MJWP2"/>
        </identifiers>
        <balance>10940.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1291357.6000000000</valUSD>
        <pctVal>1.4426529006</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>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"/>
        </identifiers>
        <balance>1946938.2400000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1946938.2400000000</valUSD>
        <pctVal>2.1750412892</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>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>GE HealthCare Technologies Inc</name>
        <lei>549300OI9J7XOWZMUN85</lei>
        <title>GE HealthCare Technologies Inc</title>
        <cusip>36266G107</cusip>
        <identifiers>
          <isin value="US36266G1076"/>
          <ticker value="GEHC"/>
          <other otherDesc="SEDOL" value="BL6JPG8"/>
        </identifiers>
        <balance>14334.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1056845.8200000000</valUSD>
        <pctVal>1.1806657487</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>Hubbell Inc</name>
        <lei>54930088VDQ6840Y6597</lei>
        <title>Hubbell Inc</title>
        <cusip>443510607</cusip>
        <identifiers>
          <isin value="US4435106079"/>
          <ticker value="HUBB"/>
          <other otherDesc="SEDOL" value="BDFG6S3"/>
        </identifiers>
        <balance>5174.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>2229942.2600000000</valUSD>
        <pctVal>2.4912020261</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>Vistra Corp</name>
        <lei>N/A</lei>
        <title>Vistra Corp</title>
        <cusip>92840M102</cusip>
        <identifiers>
          <isin value="US92840M1027"/>
          <ticker value="VST"/>
          <other otherDesc="SEDOL" value="BZ8VJQ8"/>
        </identifiers>
        <balance>17154.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3243992.9400000000</valUSD>
        <pctVal>3.6240587613</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>WESCO International Inc</name>
        <lei>N/A</lei>
        <title>WESCO International Inc</title>
        <cusip>95082P105</cusip>
        <identifiers>
          <isin value="US95082P1057"/>
          <ticker value="WCC"/>
          <other otherDesc="SEDOL" value="2416973"/>
        </identifiers>
        <balance>9784.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>2150914.5600000000</valUSD>
        <pctVal>2.4029154503</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>IDEXX Laboratories Inc</name>
        <lei>OGMTXK0LUU1HKV2P0J84</lei>
        <title>IDEXX Laboratories Inc</title>
        <cusip>45168D104</cusip>
        <identifiers>
          <isin value="US45168D1046"/>
          <ticker value="IDXX"/>
          <other otherDesc="SEDOL" value="2459202"/>
        </identifiers>
        <balance>1688.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1092287.9200000000</valUSD>
        <pctVal>1.2202602409</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>Insulet Corp</name>
        <lei>549300TZTYD2PYN92D43</lei>
        <title>Insulet Corp</title>
        <cusip>45784P101</cusip>
        <identifiers>
          <isin value="US45784P1012"/>
          <ticker value="PODD"/>
          <other otherDesc="SEDOL" value="B1XGNW4"/>
        </identifiers>
        <balance>3658.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1243281.0400000000</valUSD>
        <pctVal>1.3889436966</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>IQVIA Holdings Inc</name>
        <lei>549300W3R20NM4KQPH86</lei>
        <title>IQVIA Holdings Inc</title>
        <cusip>46266C105</cusip>
        <identifiers>
          <isin value="US46266C1053"/>
          <ticker value="IQV"/>
          <other otherDesc="SEDOL" value="BDR73G1"/>
        </identifiers>
        <balance>7122.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1358948.8200000000</valUSD>
        <pctVal>1.5181630997</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>MSCI Inc</name>
        <lei>549300HTIN2PD78UB763</lei>
        <title>MSCI Inc</title>
        <cusip>55354G100</cusip>
        <identifiers>
          <isin value="US55354G1004"/>
          <ticker value="MSCI"/>
          <other otherDesc="SEDOL" value="B2972D2"/>
        </identifiers>
        <balance>5069.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>2877772.6800000000</valUSD>
        <pctVal>3.2149321799</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>Monolithic Power Systems Inc</name>
        <lei>N/A</lei>
        <title>Monolithic Power Systems Inc</title>
        <cusip>609839105</cusip>
        <identifiers>
          <isin value="US6098391054"/>
          <ticker value="MPWR"/>
          <other otherDesc="SEDOL" value="B01Z7J1"/>
        </identifiers>
        <balance>4323.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3612990.4800000000</valUSD>
        <pctVal>4.0362880086</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>Natera Inc</name>
        <lei>N/A</lei>
        <title>Natera Inc</title>
        <cusip>632307104</cusip>
        <identifiers>
          <isin value="US6323071042"/>
          <ticker value="NTRA"/>
          <other otherDesc="SEDOL" value="BYQRG48"/>
        </identifiers>
        <balance>11996.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>2018327.0000000000</valUSD>
        <pctVal>2.2547939477</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>West Pharmaceutical Services Inc</name>
        <lei>5493007NKRGM1RJQ1P16</lei>
        <title>West Pharmaceutical Services Inc</title>
        <cusip>955306105</cusip>
        <identifiers>
          <isin value="US9553061055"/>
          <ticker value="WST"/>
          <other otherDesc="SEDOL" value="2950482"/>
        </identifiers>
        <balance>5529.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1365386.5500000000</valUSD>
        <pctVal>1.5253550734</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>Zscaler Inc</name>
        <lei>N/A</lei>
        <title>Zscaler Inc</title>
        <cusip>98980G102</cusip>
        <identifiers>
          <isin value="US98980G1022"/>
          <ticker value="ZS"/>
          <other otherDesc="SEDOL" value="BZ00V34"/>
        </identifiers>
        <balance>13861.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3840190.0500000000</valUSD>
        <pctVal>4.2901062528</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>Johnson Controls International plc</name>
        <lei>549300XQ6S1GYKGBL205</lei>
        <title>Johnson Controls International plc</title>
        <cusip>G51502105</cusip>
        <identifiers>
          <isin value="IE00BY7QL619"/>
          <ticker value="JCI"/>
          <other otherDesc="SEDOL" value="BY7QL61"/>
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        <balance>36760.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3929276.4000000000</valUSD>
        <pctVal>4.3896299488</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>NU Holdings Ltd/Cayman Islands</name>
        <lei>5493002DG1RHWK9W2X27</lei>
        <title>NU Holdings Ltd/Cayman Islands</title>
        <cusip>G6683N103</cusip>
        <identifiers>
          <isin value="KYG6683N1034"/>
          <ticker value="NU"/>
          <other otherDesc="SEDOL" value="BN6NP19"/>
        </identifiers>
        <balance>50801.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>751854.8000000000</valUSD>
        <pctVal>0.8399420176</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>BR</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Pool Corp</name>
        <lei>5493005VZK1KMN6CO617</lei>
        <title>Pool Corp</title>
        <cusip>73278L105</cusip>
        <identifiers>
          <isin value="US73278L1052"/>
          <ticker value="POOL"/>
          <other otherDesc="SEDOL" value="2781585"/>
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        <balance>8896.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>2764076.1600000000</valUSD>
        <pctVal>3.0879149893</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>Republic Services Inc</name>
        <lei>NKNQHM6BLECKVOQP7O46</lei>
        <title>Republic Services Inc</title>
        <cusip>760759100</cusip>
        <identifiers>
          <isin value="US7607591002"/>
          <ticker value="RSG"/>
          <other otherDesc="SEDOL" value="2262530"/>
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        <balance>10897.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>2549571.0900000000</valUSD>
        <pctVal>2.8482785312</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>On Holding AG</name>
        <lei>506700FB3467B9W95526</lei>
        <title>On Holding AG</title>
        <cusip>H5919C104</cusip>
        <identifiers>
          <isin value="CH1134540470"/>
          <ticker value="ONON"/>
          <other otherDesc="SEDOL" value="BPF0FP9"/>
        </identifiers>
        <balance>54816.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>2471105.2800000000</valUSD>
        <pctVal>2.7606196764</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>CH</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Sprouts Farmers Market Inc</name>
        <lei>N/A</lei>
        <title>Sprouts Farmers Market Inc</title>
        <cusip>85208M102</cusip>
        <identifiers>
          <isin value="US85208M1027"/>
          <ticker value="SFM"/>
          <other otherDesc="SEDOL" value="BCGCR79"/>
        </identifiers>
        <balance>16585.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>2330855.9000000000</valUSD>
        <pctVal>2.6039386959</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>Block Inc</name>
        <lei>549300OHIIUWSTIZME52</lei>
        <title>Block Inc</title>
        <cusip>852234103</cusip>
        <identifiers>
          <isin value="US8522341036"/>
          <ticker value="XYZ"/>
          <other otherDesc="SEDOL" value="BYNZGK1"/>
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        <balance>20058.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1597419.1200000000</valUSD>
        <pctVal>1.7845725513</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>TPG Inc</name>
        <lei>549300NLO4R8MX77XJ02</lei>
        <title>TPG Inc</title>
        <cusip>872657101</cusip>
        <identifiers>
          <isin value="US8726571016"/>
          <ticker value="TPG"/>
          <other otherDesc="SEDOL" value="BNKBB55"/>
        </identifiers>
        <balance>34834.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>2102231.9000000000</valUSD>
        <pctVal>2.3485291357</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>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>
