<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001832812</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001647639</issuerCik>
      <issuerName>Upstart Holdings, Inc.</issuerName>
      <secFileNumber>001-39797</secFileNumber>
      <issuerAddress>
        <com:street1>2950 S. DELAWARE STREET, SUITE 300</com:street1>
        <com:city>SAN MATEO</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>94403</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>(650) 204-1000</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Gu Paul</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Charles Schwab &amp; Co., Inc.</name>
        <address>
          <com:street1>3000 Schwab Way</com:street1>
          <com:city>Westlake</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>76262</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>120007</noOfUnitsSold>
      <aggregateMarketValue>948827.00</aggregateMarketValue>
      <noOfUnitsOutstanding>93710996</noOfUnitsOutstanding>
      <approxSaleDate>02/20/2025</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>02/20/2025</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Lapse - See Remarks</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Upstart Holdings, Inc.</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>12007</amountOfSecuritiesAcquired>
      <paymentDate>02/20/2025</paymentDate>
      <natureOfPayment>Equity Compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Paul Gu</name>
        <address>
          <com:street1>2950 S. DELAWARE STREET, SUITE 300</com:street1>
          <com:city>SAN MATEO</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94403</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Upstart Holdings, Inc.</securitiesClassTitle>
      <saleDate>11/20/2024</saleDate>
      <amountOfSecuritiesSold>15500</amountOfSecuritiesSold>
      <grossProceeds>1082163.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Paul Gu</name>
        <address>
          <com:street1>2950 S. DELAWARE STREET, SUITE 300</com:street1>
          <com:city>SAN MATEO</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94403</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Upstart Holdings, Inc.</securitiesClassTitle>
      <saleDate>11/21/2024</saleDate>
      <amountOfSecuritiesSold>21214</amountOfSecuritiesSold>
      <grossProceeds>1591593.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Paul Gu</name>
        <address>
          <com:street1>2950 S. DELAWARE STREET, SUITE 300</com:street1>
          <com:city>SAN MATEO</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94403</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Upstart Holdings, Inc.</securitiesClassTitle>
      <saleDate>11/25/2024</saleDate>
      <amountOfSecuritiesSold>58786</amountOfSecuritiesSold>
      <grossProceeds>3863814.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Paul Gu</name>
        <address>
          <com:street1>2950 S. DELAWARE STREET, SUITE 300</com:street1>
          <com:city>SAN MATEO</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94403</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Upstart Holdings, Inc.</securitiesClassTitle>
      <saleDate>12/02/2024</saleDate>
      <amountOfSecuritiesSold>87600</amountOfSecuritiesSold>
      <grossProceeds>6078466.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Paul Gu</name>
        <address>
          <com:street1>2950 S. DELAWARE STREET, SUITE 300</com:street1>
          <com:city>SAN MATEO</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94403</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Upstart Holdings, Inc.</securitiesClassTitle>
      <saleDate>12/04/2024</saleDate>
      <amountOfSecuritiesSold>28115</amountOfSecuritiesSold>
      <grossProceeds>2110323.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Paul Gu</name>
        <address>
          <com:street1>2950 S. DELAWARE STREET, SUITE 300</com:street1>
          <com:city>SAN MATEO</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94403</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Upstart Holdings, Inc.</securitiesClassTitle>
      <saleDate>12/05/2024</saleDate>
      <amountOfSecuritiesSold>4019</amountOfSecuritiesSold>
      <grossProceeds>301425.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Paul Gu</name>
        <address>
          <com:street1>2950 S. DELAWARE STREET, SUITE 300</com:street1>
          <com:city>SAN MATEO</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94403</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Upstart Holdings, Inc.</securitiesClassTitle>
      <saleDate>12/06/2024</saleDate>
      <amountOfSecuritiesSold>40226</amountOfSecuritiesSold>
      <grossProceeds>3035317.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <remarks>Shares sold to cover tax obligation from settlement of vested Restricted Stock Units.</remarks>
    <noticeSignature>
      <noticeDate>02/20/2025</noticeDate>
      <signature>PAUL GU</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
