<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13g" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>SCHEDULE 13G/A</submissionType>
    <previousAccessionNumber>0001104659-24-118292</previousAccessionNumber>
    <filerInfo>
      <filer>
        <filerCredentials>
          <!-- Field: Pseudo-Tag; ID: Name; Data: MASP Investor Limited Partnership -->
          <cik>0002040199</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>


    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <amendmentNo>1</amendmentNo>
      <securitiesClassTitle>Common Stock, par value $0.001551 per share</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>06/30/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0001997464</issuerCik>
        <issuerName>Marex Group plc</issuerName>
        <issuerCusip>G5S37H101</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>155 Bishopsgate</com:street1>
          <com:city>London</com:city>
          <com:stateOrCountry>X0</com:stateOrCountry>
          <com:zipCode>EC2M 3TQ</com:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(d)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>MASP Investor Limited Partnership</reportingPersonName>
      <memberGroup>b</memberGroup>
      <citizenshipOrOrganization>Y9</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>5024604.00</sharedVotingPower>
        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>5024604.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>5024604.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>7.01</classPercent>
      <typeOfReportingPerson>PN</typeOfReportingPerson>
      <comments>MASP Investor Limited Partnership ("MASP Investor LP") acts through its general partner Forty Two Point Two Acquisition Limited ("FTPTAL"). FTPTAL, in its capacity as general partner of MASP Investor LP, is the record holder of the Shares reported herein. FTPTAL is indirectly wholly-owned by BXR Group Holdings Limited, which is deemed to have beneficial ownership of the Shares held directly by FTPTAL, in its capacity as general partner of MASP Investor LP.</comments>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>Forty Two Point Two Acquisition Limited</reportingPersonName>
      <memberGroup>b</memberGroup>
      <citizenshipOrOrganization>D8</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>5024604.00</sharedVotingPower>
        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>5024604.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>5024604.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>7.01</classPercent>
      <typeOfReportingPerson>CO</typeOfReportingPerson>
      <comments>MASP Investor LP acts through its general partner FTPTAL. FTPTAL, in its capacity as general partner of MASP Investor LP, is the record holder of the Shares reported herein. FTPTAL is indirectly wholly-owned by BXR Group Holdings Limited, which is deemed to have beneficial ownership of the Shares held directly by FTPTAL, in its capacity as general partner of MASP Investor LP.</comments>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>BXR Group Holdings Limited</reportingPersonName>
      <memberGroup>b</memberGroup>
      <citizenshipOrOrganization>D8</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>5024604.00</sharedVotingPower>
        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>5024604.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>5024604.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>7.01</classPercent>
      <typeOfReportingPerson>CO</typeOfReportingPerson>
      <comments>MASP Investor LP acts through its general partner FTPTAL. FTPTAL, in its capacity as general partner of MASP Investor LP, is the record holder of the Shares reported herein. FTPTAL is indirectly wholly-owned by BXR Group Holdings Limited, which is deemed to have beneficial ownership of the Shares held directly by FTPTAL, in its capacity as general partner of MASP Investor LP.</comments>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>Marex Group plc</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>155 Bishopsgate London, United Kingdom, EC2M 3TQ</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <citizenship>(i) MASP Investor Limited Partnership ("MASP Investor LP")
44 Esplanade, St. Helier, JE4 9WG, Jersey
Citizenship: Limited partnership established under the laws of Jersey

(ii) Forty Two Point Two Acquisition Limited ("FTPTAL")
Little Denmark Building, PO Box 4584, Road Town, Tortola, British Virgin Islands
Citizenship: Company organized under the laws of the British Virgin Islands

(iii) BXR Group Holdings Limited ("BXR Group")
Little Denmark Building, PO Box 4584, Road Town, Tortola, British Virgin Islands
Citizenship: Company organized under the laws of the British Virgin Islands</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>Y</notApplicableFlag>
      </item3>
      <item4>
        <amountBeneficiallyOwned>As of July 24, 2025, FTPTAL directly held 5,024,604 Shares. MASP Investor LP acts through its general partner FTPTAL. FTPTAL is indirectly wholly-owned by BXR Group, which is deemed to have beneficial ownership of the Shares held directly by FTPTAL, in its capacity as general partner of MASP Investor LP.</amountBeneficiallyOwned>
        <classPercent>Each of the Reporting Persons may be deemed to be the beneficial owner of the percentage of Shares listed on such Reporting Person's cover page. Calculations of the percentage of Shares beneficially owned are based on 71,699,922 Shares outstanding as of June 30, 2025, which excludes 1,199,156 Ordinary Shares that were held by the Company's employee benefit trust, based on information provided by the Issuer to the Reporting Persons.</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>0</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>5,024,604</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>0</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>5,024,604</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>Y</notApplicableFlag>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>Y</notApplicableFlag>
      </item7>
      <item8>
        <notApplicableFlag>Y</notApplicableFlag>
      </item8>
      <item9>
        <notApplicableFlag>Y</notApplicableFlag>
      </item9>
      <item10>
        <notApplicableFlag>Y</notApplicableFlag>
      </item10>
    </items>
    <signatureInformation>
      <reportingPersonName>MASP Investor Limited Partnership</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Jacqueline Daley</signature>
        <title>Jacqueline Daley / Director</title>
        <date>07/24/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Forty Two Point Two Acquisition Limited</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Jacqueline Daley</signature>
        <title>Jacqueline Daley / Director</title>
        <date>07/24/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>BXR Group Holdings Limited</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Christina Rodriguez</signature>
        <title>Christina Rodriguez / Director</title>
        <date>07/24/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureComments>FORTY TWO POINT TWO ACQUISITION LIMITED, AS GENERAL PARTNER OF MASP INVESTOR LIMITED PARTNERSHIP</signatureComments>
  </formData>
</edgarSubmission>
