<SEC-DOCUMENT>0000895421-25-000491.txt : 20250807
<SEC-HEADER>0000895421-25-000491.hdr.sgml : 20250807
<ACCEPTANCE-DATETIME>20250807145920
ACCESSION NUMBER:		0000895421-25-000491
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250807
DATE AS OF CHANGE:		20250807

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WHITE MOUNTAINS INSURANCE GROUP LTD
		CENTRAL INDEX KEY:			0000776867
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		ORGANIZATION NAME:           	02 Finance
		EIN:				942708455
		STATE OF INCORPORATION:			D0
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-36786
		FILM NUMBER:		251193385

	BUSINESS ADDRESS:	
		STREET 1:		23 SOUTH MAIN STREET
		STREET 2:		SUITE 3B
		CITY:			HANOVER
		STATE:			NH
		ZIP:			03755
		BUSINESS PHONE:		603 640 2200

	MAIL ADDRESS:	
		STREET 1:		23 SOUTH MAIN STREET
		STREET 2:		SUITE 3B
		CITY:			HANOVER
		STATE:			NH
		ZIP:			03755

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WHITE MOUNTAINS INSURANCE GROUP INC
		DATE OF NAME CHANGE:	19990603

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FUND AMERICAN ENTERPRISES HOLDINGS INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FUND AMERICAN COMPANIES INC
		DATE OF NAME CHANGE:	19920701

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MORGAN STANLEY
		CENTRAL INDEX KEY:			0000895421
		STANDARD INDUSTRIAL CLASSIFICATION:	SECURITY BROKERS, DEALERS & FLOTATION COMPANIES [6211]
		ORGANIZATION NAME:           	02 Finance
		EIN:				363145972
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		1585 BROADWAY
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		212-761-4000

	MAIL ADDRESS:	
		STREET 1:		1585 BROADWAY
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MORGAN STANLEY DEAN WITTER & CO
		DATE OF NAME CHANGE:	19980326

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DEAN WITTER DISCOVER & CO
		DATE OF NAME CHANGE:	19960315
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13g" xmlns:com="http://www.sec.gov/edgar/common" xmlns:g="http://xml.ms.com/ns/itlnc/filelink/US13GFiling/v1.0" xmlns:p="http://www.sec.gov/edgar/schedule13g">
  <headerData>
    <submissionType>SCHEDULE 13G/A</submissionType>
    <previousAccessionNumber/>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0000895421</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <amendmentNo>5</amendmentNo>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>06/30/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0000776867</issuerCik>
        <issuerName>WHITE MOUNTAINS INSURANCE GROUP LTD</issuerName>
        <issuerCusip>G9618E107</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>23 SOUTH MAIN STREET</com:street1>
          <com:street2>SUITE 3B</com:street2>
          <com:city>HANOVER</com:city>
          <com:stateOrCountry>NH</com:stateOrCountry>
          <com:zipCode>03755</com:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(b)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Morgan Stanley</reportingPersonName>
      <citizenshipOrOrganization>DE</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>103198</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>159020</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>159020</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>6.2</classPercent>
      <typeOfReportingPerson>HC</typeOfReportingPerson>
      <typeOfReportingPerson>CO</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>WHITE MOUNTAINS INSURANCE GROUP LTD</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>23 SOUTH MAIN STREET, SUITE 3B, HANOVER, NH, 03755</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>Morgan Stanley</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>1585 Broadway, New York, NY 10036</principalBusinessOfficeOrResidenceAddress>
        <citizenship>Delaware</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>N</notApplicableFlag>
        <typeOfPersonFiling>HC</typeOfPersonFiling>
      </item3>
      <item4>
        <amountBeneficiallyOwned>See the response(s) to Item 9 on the attached cover page(s).</amountBeneficiallyOwned>
        <classPercent>6.2</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>See the response(s) to Item 5 on the attached cover page(s).</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>See the response(s) to Item 6 on the attached cover page(s).</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>See the response(s) to Item 7 on the attached cover page(s).</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>See the response(s) to Item 8 on the attached cover page(s).</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>Y</notApplicableFlag>
        <classOwnership5PercentOrLess>N</classOwnership5PercentOrLess>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>Y</notApplicableFlag>
      </item7>
      <item8>
        <notApplicableFlag>Y</notApplicableFlag>
      </item8>
      <item9>
        <notApplicableFlag>Y</notApplicableFlag>
      </item9>
      <item10>
        <notApplicableFlag>N</notApplicableFlag>
        <certifications>By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

					*  In Accordance with the Securities and Exchange Commission Release
					No. 34-39538 (January 12, 1998) (the "Release"), this filing reflects the
					securities beneficially owned, or that may be deemed to be beneficially owned,
					by certain operating units (collectively, the "MS Reporting Units") of Morgan
					Stanley and its subsidiaries and affiliates (collectively, "MS").  This filing
					does not reflect securities, if any, beneficially owned by any operating units
					of MS whose ownership of securities is disaggregated from that of the MS
					Reporting Units in accordance with the Release.
					</certifications>
      </item10>
    </items>
    <signatureInformation>
      <reportingPersonName>Morgan Stanley</reportingPersonName>
      <signatureDetails>
        <signature>Christopher O'Hara</signature>
        <title>Authorized Signatory, Morgan Stanley</title>
        <date>08/07/2025</date>
      </signatureDetails>
    </signatureInformation>
  </formData>
</edgarSubmission>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
