<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/nport" xmlns:com="http://www.sec.gov/edgar/common" xmlns:ncom="http://www.sec.gov/edgar/nportcommon" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.sec.gov/edgar/nport eis_NPORT_Filer.xsd">
  <headerData>
    <submissionType>NPORT-P</submissionType>
    <isConfidential>false</isConfidential>
    <filerInfo>

      <filer>
        <issuerCredentials>
          <cik>0001901443</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>


      <seriesClassInfo>
        <seriesId>S000075551</seriesId>
        <classId>C000234742</classId>
      </seriesClassInfo>

    </filerInfo>
  </headerData>
  <formData>
    <genInfo>
      <regName>X-Square Series Trust</regName>
      <regFileNumber>811-23769</regFileNumber>
      <regCik>0001901443</regCik>
      <regLei>549300BOIDL43A72WY95</regLei>
      <regStreet1>90 CARR 165 Suite 803</regStreet1>
      <regStreet2>Centro Internacional de Mercadeo II</regStreet2>
      <regCity>Guaynabo</regCity>
      <regStateConditional regCountry="US" regState="US-PR"/>
      <regZipOrPostalCode>00968</regZipOrPostalCode>
      <regPhone>7872821621</regPhone>
      <seriesName>X-Square Municipal Income ETF</seriesName>
      <seriesId>S000075551</seriesId>
      <seriesLei>5493000JSRY4R3A1Y464</seriesLei>
      <repPdEnd>2026-09-30</repPdEnd>
      <repPdDate>2026-06-30</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
    <fundInfo>
      <totAssets>7249407.71</totAssets>
      <totLiabs>27223.80</totLiabs>
      <netAssets>7222183.91</netAssets>
      <assetsAttrMiscSec>0.00000000</assetsAttrMiscSec>
      <assetsInvested>0.00000000</assetsInvested>
      <amtPayOneYrBanksBorr>0.00000000</amtPayOneYrBanksBorr>
      <amtPayOneYrCtrldComp>0.00000000</amtPayOneYrCtrldComp>
      <amtPayOneYrOthAffil>0.00000000</amtPayOneYrOthAffil>
      <amtPayOneYrOther>0.00000000</amtPayOneYrOther>
      <amtPayAftOneYrBanksBorr>0.00000000</amtPayAftOneYrBanksBorr>
      <amtPayAftOneYrCtrldComp>0.00000000</amtPayAftOneYrCtrldComp>
      <amtPayAftOneYrOthAffil>0.00000000</amtPayAftOneYrOthAffil>
      <amtPayAftOneYrOther>0.00000000</amtPayAftOneYrOther>
      <delayDeliv>0.00000000</delayDeliv>
      <standByCommit>0.00000000</standByCommit>
      <liquidPref>0.00000000</liquidPref>
      <cshNotRptdInCorD>2364.17000000</cshNotRptdInCorD>
      <curMetrics>
        <curMetric>
          <curCd>USD</curCd>
          <intrstRtRiskdv01 period10Yr="1862.78452800" period1Yr="145.42411300" period30Yr="3728.24771900" period3Mon="11.45800000" period5Yr="804.29976100"/>
          <intrstRtRiskdv100 period10Yr="186723.13129400" period1Yr="30061.42526900" period30Yr="261233.47893300" period3Mon="1141.92907100" period5Yr="101994.52581600"/>
        </curMetric>
      </curMetrics>
      <creditSprdRiskInvstGrade period10Yr="26.40752300" period1Yr="0.00000000" period30Yr="0.00000000" period3Mon="0.00000000" period5Yr="24.78158200"/>
      <creditSprdRiskNonInvstGrade period10Yr="0.00000000" period1Yr="0.00000000" period30Yr="0.00000000" period3Mon="0.00000000" period5Yr="0.00000000"/>
      <isNonCashCollateral>N</isNonCashCollateral>
      <returnInfo>
        <monthlyTotReturns>
          <monthlyTotReturn classId="C000234742" rtn1="0.99000000" rtn2="1.03000000" rtn3="1.13000000"/>
        </monthlyTotReturns>
        <othMon1 netRealizedGain="-0.01000000" netUnrealizedAppr="41074.20000000"/>
        <othMon2 netRealizedGain="0.00000000" netUnrealizedAppr="31800.70000000"/>
        <othMon3 netRealizedGain="-0.23000000" netUnrealizedAppr="59799.01000000"/>
      </returnInfo>
      <mon1Flow redemption="0.00000000" reinvestment="0.00000000" sales="0.00000000"/>
      <mon2Flow redemption="0.00000000" reinvestment="0.00000000" sales="0.00000000"/>
      <mon3Flow redemption="0.00000000" reinvestment="0.00000000" sales="2574381.74000000"/>

    </fundInfo>
    <invstOrSecs>
      <invstOrSec>
        <name>Puerto Rico Cmwlth</name>
        <lei>549300X44HXPLJU48U63</lei>
        <title>Commonwealth of Puerto Rico</title>
        <cusip>74514L3J4</cusip>
        <identifiers>
          <isin value="US74514L3J47"/>
        </identifiers>
        <balance>249000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>271858.25000000</valUSD>
        <pctVal>3.764211122117</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>PR</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2031-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.75000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Puerto Rico Cmwlth Aqueduct &amp; Swr Auth Revenue</name>
        <lei>N/A</lei>
        <title>Puerto Rico Commonwealth Aqueduct &amp; Sewer Authority</title>
        <cusip>745160TP6</cusip>
        <identifiers>
          <isin value="US745160TP63"/>
        </identifiers>
        <balance>250000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>256450.33000000</valUSD>
        <pctVal>3.550869559620</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>PR</invCountry>
        <isRestrictedSec>Y</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2028-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Puerto Rico Cmwlth</name>
        <lei>549300X44HXPLJU48U63</lei>
        <title>Commonwealth of Puerto Rico</title>
        <cusip>74514L3M7</cusip>
        <identifiers>
          <isin value="US74514L3M75"/>
        </identifiers>
        <balance>421000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>422776.37000000</valUSD>
        <pctVal>5.853857714902</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>PR</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2037-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Blackrock Liquidity Funds Municash</name>
        <lei>549300RWBJ885673DL84</lei>
        <title>BlackRock Liquidity Funds MuniCash Inst Class</title>
        <cusip>09248U841</cusip>
        <identifiers>
          <isin value="US09248U8412"/>
        </identifiers>
        <balance>0.00700000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>0.01000000</valUSD>
        <pctVal>0.000000138462</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>Puerto Rico Cmwlth</name>
        <lei>549300X44HXPLJU48U63</lei>
        <title>Commonwealth of Puerto Rico</title>
        <cusip>74514L3G0</cusip>
        <identifiers>
          <isin value="US74514L3G08"/>
        </identifiers>
        <balance>337000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>343351.91000000</valUSD>
        <pctVal>4.754128588785</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>PR</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2027-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.62500000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Puerto Rico Sales Tax Fing Corp Sales Tax Revenue</name>
        <lei>549300EIUFISISP8X671</lei>
        <title>Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue</title>
        <cusip>74529JPX7</cusip>
        <identifiers>
          <isin value="US74529JPX71"/>
        </identifiers>
        <balance>1000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>1000095.40000000</valUSD>
        <pctVal>13.84754822727</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>PR</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2058-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Puerto Rico Sales Tax Fing Corp Sales Tax Revenue</name>
        <lei>549300EIUFISISP8X671</lei>
        <title>Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue</title>
        <cusip>74529JRL1</cusip>
        <identifiers>
          <isin value="US74529JRL16"/>
        </identifiers>
        <balance>875000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>858003.13000000</valUSD>
        <pctVal>11.88010635968</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>PR</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2058-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.78400000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Puerto Rico Cmwlth Aqueduct &amp; Swr Auth Revenue</name>
        <lei>N/A</lei>
        <title>Puerto Rico Commonwealth Aqueduct &amp; Sewer Authority</title>
        <cusip>745160UD1</cusip>
        <identifiers>
          <isin value="US745160UD15"/>
        </identifiers>
        <balance>250000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>263176.68000000</valUSD>
        <pctVal>3.644004130600</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>PR</invCountry>
        <isRestrictedSec>Y</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2037-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Puerto Rico Cmwlth Aqueduct &amp; Swr Auth Revenue</name>
        <lei>N/A</lei>
        <title>Puerto Rico Commonwealth Aqueduct &amp; Sewer Authority</title>
        <cusip>745160SJ1</cusip>
        <identifiers>
          <isin value="US745160SJ13"/>
        </identifiers>
        <balance>280000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>282711.10000000</valUSD>
        <pctVal>3.914482150039</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>PR</invCountry>
        <isRestrictedSec>Y</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2047-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Puerto Rico Cmwlth</name>
        <lei>549300X44HXPLJU48U63</lei>
        <title>Commonwealth of Puerto Rico</title>
        <cusip>74514L3N5</cusip>
        <identifiers>
          <isin value="US74514L3N58"/>
        </identifiers>
        <balance>18000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>17547.55000000</valUSD>
        <pctVal>0.242967365808</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>PR</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2041-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Puerto Rico Sales Tax Fing Corp Sales Tax Revenue</name>
        <lei>549300EIUFISISP8X671</lei>
        <title>Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue</title>
        <cusip>74529JPW9</cusip>
        <identifiers>
          <isin value="US74529JPW98"/>
        </identifiers>
        <balance>46000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>45516.86000000</valUSD>
        <pctVal>0.630236789414</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>PR</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2053-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.75000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Puerto Rico Cmwlth Aqueduct &amp; Swr Auth Revenue</name>
        <lei>N/A</lei>
        <title>Puerto Rico Commonwealth Aqueduct &amp; Sewer Authority</title>
        <cusip>745160TT8</cusip>
        <identifiers>
          <isin value="US745160TT85"/>
        </identifiers>
        <balance>250000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>243503.88000000</valUSD>
        <pctVal>3.371610070228</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>PR</invCountry>
        <isRestrictedSec>Y</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2042-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Guam Govt Business Privilege Tax Revenue</name>
        <lei>N/A</lei>
        <title>Territory of Guam</title>
        <cusip>40065NCQ8</cusip>
        <identifiers>
          <isin value="US40065NCQ88"/>
        </identifiers>
        <balance>90000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>89901.07000000</valUSD>
        <pctVal>1.244790649480</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>GU</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2036-01-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Puerto Rico Sales Tax Fing Corp Sales Tax Revenue</name>
        <lei>549300EIUFISISP8X671</lei>
        <title>Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue</title>
        <cusip>74529JRH0</cusip>
        <identifiers>
          <isin value="US74529JRH04"/>
        </identifiers>
        <balance>450000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>450215.46000000</valUSD>
        <pctVal>6.233785591870</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>PR</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2040-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.32900000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Puerto Rico Cmwlth</name>
        <lei>549300X44HXPLJU48U63</lei>
        <title>Commonwealth of Puerto Rico</title>
        <cusip>74514L3L9</cusip>
        <identifiers>
          <isin value="US74514L3L92"/>
        </identifiers>
        <balance>621000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>626935.08000000</valUSD>
        <pctVal>8.680685618264</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>PR</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2035-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Puerto Rico Cmwlth</name>
        <lei>549300X44HXPLJU48U63</lei>
        <title>Commonwealth of Puerto Rico</title>
        <cusip>74514L3P0</cusip>
        <identifiers>
          <isin value="US74514L3P07"/>
        </identifiers>
        <balance>1594320.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>1462473.88000000</valUSD>
        <pctVal>20.24974575868</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>PR</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2046-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Matching Fund Spl Purpose Securitiztn Corp</name>
        <lei>N/A</lei>
        <title>Matching Fund Special Purpose Securitization Corp.</title>
        <cusip>57665NAG0</cusip>
        <identifiers>
          <isin value="US57665NAG07"/>
        </identifiers>
        <balance>425000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>442169.49000000</valUSD>
        <pctVal>6.122379262424</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>VI</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2039-10-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2026-07-30</ncom:dateSigned>
      <ncom:nameOfApplicant>X-Square Series Trust</ncom:nameOfApplicant>
      <ncom:signature>Cristina Perez</ncom:signature>
      <ncom:signerName>Cristina Perez</ncom:signerName>
      <ncom:title>Chief Compliance Officer</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
