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          <ccc>XXXXXXXX</ccc>
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    </filerInfo>
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      <regCik>0001084380</regCik>
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      <regStreet1>730 Third Avenue</regStreet1>
      <regCity>New York</regCity>
      <regStateConditional regCountry="US" regState="US-NY"/>
      <regZipOrPostalCode>10017</regZipOrPostalCode>
      <regPhone>800-842-2733</regPhone>
      <seriesName>Nuveen Lifecycle Index 2010 Fund</seriesName>
      <seriesId>S000026498</seriesId>
      <seriesLei>54930052A5VBSVIWKX92</seriesLei>
      <repPdEnd>2026-05-31</repPdEnd>
      <repPdDate>2026-02-28</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
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      <totLiabs>129092.00</totLiabs>
      <netAssets>670238004.00</netAssets>
      <assetsAttrMiscSec>0.00000000</assetsAttrMiscSec>
      <assetsInvested>0.00000000</assetsInvested>
      <amtPayOneYrBanksBorr>0.00000000</amtPayOneYrBanksBorr>
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      <invstOrSec>
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        <name>Nuveen High Yield Corporate Bond Etf</name>
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    <signature>
      <ncom:dateSigned>2026-02-28</ncom:dateSigned>
      <ncom:nameOfApplicant>TIAA-CREF Funds</ncom:nameOfApplicant>
      <ncom:signature>Gina Spunder</ncom:signature>
      <ncom:signerName>Gina Spunder</ncom:signerName>
      <ncom:title>Director, Fund Financial Reporting</ncom:title>
    </signature>
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</edgarSubmission>
