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        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>West Pharmaceutical Services Inc</name>
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        <invCountry>US</invCountry>
        
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Hubbell Inc</name>
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        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>IDEXX Laboratories Inc</name>
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        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
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        <name>Insmed Inc</name>
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        <invCountry>US</invCountry>
        
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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        <name>MSCI Inc</name>
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        <invCountry>US</invCountry>
        
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
        <securityLending>
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        <name>Johnson Controls International plc</name>
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        <invCountry>US</invCountry>
        
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Monolithic Power Systems Inc</name>
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        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
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        <name>Natera Inc</name>
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        <invCountry>US</invCountry>
        
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
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        <name>Okta Inc</name>
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        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
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        <name>Republic Services Inc</name>
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        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
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        <name>Sprouts Farmers Market Inc</name>
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        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
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        <name>Structure Therapeutics Inc</name>
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        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
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        <name>Targa Resources Corp</name>
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        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
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        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
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        <name>Tractor Supply Co</name>
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        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
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        <name>Vertiv Holdings Co</name>
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        <name>Viking Therapeutics Inc</name>
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        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
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    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2026-07-29</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>
