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      <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>3345.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>314898.3000000000</valUSD>
        <pctVal>2.0978034672</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>Palo Alto Networks Inc</name>
        <lei>549300QXR2YVZV231H43</lei>
        <title>Palo Alto Networks Inc</title>
        <cusip>697435105</cusip>
        <identifiers>
          <isin value="US6974351057"/>
          <ticker value="PANW"/>
          <other otherDesc="SEDOL" value="B87ZMX0"/>
        </identifiers>
        <balance>1975.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>717418.7500000000</valUSD>
        <pctVal>4.7793320611</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>Peloton Interactive Inc</name>
        <lei>N/A</lei>
        <title>Peloton Interactive Inc</title>
        <cusip>70614W100</cusip>
        <identifiers>
          <isin value="US70614W1009"/>
          <ticker value="PTON"/>
          <other otherDesc="SEDOL" value="BJ7WJS2"/>
        </identifiers>
        <balance>4955.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>546586.0500000000</valUSD>
        <pctVal>3.6412712003</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>RingCentral Inc</name>
        <lei>549300C8EH0H1614VE84</lei>
        <title>RingCentral Inc</title>
        <cusip>76680R206</cusip>
        <identifiers>
          <isin value="US76680R2067"/>
          <ticker value="RNG"/>
          <other otherDesc="SEDOL" value="BDZCRX3"/>
        </identifiers>
        <balance>865.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>227036.5500000000</valUSD>
        <pctVal>1.5124821626</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>Square Inc</name>
        <lei>549300OHIIUWSTIZME52</lei>
        <title>Square Inc</title>
        <cusip>852234103</cusip>
        <identifiers>
          <isin value="US8522341036"/>
          <ticker value="SQ"/>
          <other otherDesc="SEDOL" value="BYNZGK1"/>
        </identifiers>
        <balance>2283.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>508013.1600000000</valUSD>
        <pctVal>3.3843046102</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>Turning Point Therapeutics Inc</name>
        <lei>N/A</lei>
        <title>Turning Point Therapeutics Inc</title>
        <cusip>90041T108</cusip>
        <identifiers>
          <isin value="US90041T1088"/>
          <ticker value="TPTX"/>
          <other otherDesc="SEDOL" value="BJXBP30"/>
        </identifiers>
        <balance>2011.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>133087.9800000000</valUSD>
        <pctVal>0.8866114104</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>Twilio Inc</name>
        <lei>5493004W8TRGD63APX93</lei>
        <title>Twilio Inc</title>
        <cusip>90138F102</cusip>
        <identifiers>
          <isin value="US90138F1021"/>
          <ticker value="TWLO"/>
          <other otherDesc="SEDOL" value="BD6P5Q0"/>
        </identifiers>
        <balance>1957.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>657552.0000000000</valUSD>
        <pctVal>4.3805090896</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>Veeva Systems Inc</name>
        <lei>549300YZEXPDB92M2F02</lei>
        <title>Veeva Systems Inc</title>
        <cusip>922475108</cusip>
        <identifiers>
          <isin value="US9224751084"/>
          <ticker value="VEEV"/>
          <other otherDesc="SEDOL" value="BFH3N85"/>
        </identifiers>
        <balance>2139.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>623176.2600000000</valUSD>
        <pctVal>4.1515032596</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"/>
        </identifiers>
        <balance>4338.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>359012.8800000000</valUSD>
        <pctVal>2.3916879336</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>Horizon Therapeutics Plc</name>
        <lei>N/A</lei>
        <title>Horizon Therapeutics Plc</title>
        <cusip>G46188101</cusip>
        <identifiers>
          <isin value="IE00BQPVQZ61"/>
          <ticker value="HZNP"/>
          <other otherDesc="SEDOL" value="BQPVQZ6"/>
        </identifiers>
        <balance>3505.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>321268.3000000000</valUSD>
        <pctVal>2.1402394158</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>Aptiv PLC</name>
        <lei>N/A</lei>
        <title>Aptiv PLC</title>
        <cusip>G6095L109</cusip>
        <identifiers>
          <isin value="JE00B783TY65"/>
          <ticker value="APTV"/>
          <other otherDesc="SEDOL" value="B783TY6"/>
        </identifiers>
        <balance>4846.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>728935.3200000000</valUSD>
        <pctVal>4.8560536582</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>IE</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Trane Technologies PLC</name>
        <lei>N/A</lei>
        <title>Trane Technologies PLC</title>
        <cusip>G8994E103</cusip>
        <identifiers>
          <isin value="IE00BK9ZQ967"/>
          <ticker value="TT"/>
          <other otherDesc="SEDOL" value="BK9ZQ96"/>
        </identifiers>
        <balance>3491.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>650722.4000000000</valUSD>
        <pctVal>4.3350113573</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>IE</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2021-07-26</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>
  <documents>XXXX</documents>
</edgarSubmission>
