<SEC-DOCUMENT>0000895421-25-000565.txt : 20251107
<SEC-HEADER>0000895421-25-000565.hdr.sgml : 20251107
<ACCEPTANCE-DATETIME>20251107121629
ACCESSION NUMBER:		0000895421-25-000565
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G/A
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20251107
DATE AS OF CHANGE:		20251107

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AFFILIATED MANAGERS GROUP, INC.
		CENTRAL INDEX KEY:			0001004434
		STANDARD INDUSTRIAL CLASSIFICATION:	INVESTMENT ADVICE [6282]
		ORGANIZATION NAME:           	02 Finance
		EIN:				043218510
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-52331
		FILM NUMBER:		251461477

	BUSINESS ADDRESS:	
		STREET 1:		777 SOUTH FLAGLER DRIVE
		STREET 2:		SUITE 1401 EAST TOWER
		CITY:			WEST PALM BEACH
		STATE:			FL
		ZIP:			33401
		BUSINESS PHONE:		(800) 345-1100

	MAIL ADDRESS:	
		STREET 1:		777 SOUTH FLAGLER DRIVE
		STREET 2:		SUITE 1401 EAST TOWER
		CITY:			WEST PALM BEACH
		STATE:			FL
		ZIP:			33401

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AFFILIATED MANAGERS GROUP INC
		DATE OF NAME CHANGE:	19970822

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>6</amendmentNo>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>09/30/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0001004434</issuerCik>
        <issuerName>AFFILIATED MANAGERS GROUP, INC.</issuerName>
        <issuerCusip>008252108</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>777 SOUTH FLAGLER DRIVE</com:street1>
          <com:street2>SUITE 1401 EAST TOWER</com:street2>
          <com:city>WEST PALM BEACH</com:city>
          <com:stateOrCountry>FL</com:stateOrCountry>
          <com:zipCode>33401</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>1796796</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>1907109</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>1983387</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>7.0</classPercent>
      <typeOfReportingPerson>HC</typeOfReportingPerson>
      <typeOfReportingPerson>CO</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>Atlanta Capital Management Company, LLC</reportingPersonName>
      <citizenshipOrOrganization>DE</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>1608717</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>1707951</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>1778903</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>6.3</classPercent>
      <typeOfReportingPerson>IA</typeOfReportingPerson>
      <typeOfReportingPerson>CO</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>Eaton Vance Atlanta Capital SMID-Cap Fund</reportingPersonName>
      <citizenshipOrOrganization>MA</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>1276051</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>1276051</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>1276051</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>4.5</classPercent>
      <typeOfReportingPerson>IV</typeOfReportingPerson>
      <comments>As of the date hereof, Eaton Vance Atlanta Capital SMID-Cap Fund has ceased to be the beneficial owner of more than five percent of the class of securities.</comments>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>AFFILIATED MANAGERS GROUP, INC.</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>777 SOUTH FLAGLER DRIVE, SUITE 1401 EAST TOWER, WEST PALM BEACH, FL, 33401</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>1: Morgan Stanley 2: Atlanta Capital Management Company, LLC 3: Eaton Vance Atlanta Capital SMID-Cap Fund</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>1: 1585 Broadway, New York, NY 10036 ;2: 1075 Peachtree Street, Suite 2100, Atlanta, GA 30309 ;3: One Post Office Square, Boston, MA 02109</principalBusinessOfficeOrResidenceAddress>
        <citizenship>1: Delaware 2: Delaware 3: Massachusetts</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>N</notApplicableFlag>
        <typeOfPersonFiling>IV</typeOfPersonFiling>
        <typeOfPersonFiling>IA</typeOfPersonFiling>
        <typeOfPersonFiling>HC</typeOfPersonFiling>
      </item3>
      <item4>
        <amountBeneficiallyOwned>See the response(s) to Item 9 on the attached cover page(s).</amountBeneficiallyOwned>
        <classPercent>7.0</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>N</notApplicableFlag>
        <classOwnership5PercentOrLess>Y</classOwnership5PercentOrLess>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>N</notApplicableFlag>
        <subsidiaryIdentificationAndClassification>See Exhibit 99.2</subsidiaryIdentificationAndClassification>
      </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>
    <exhibitInfo>

					EXHIBIT NO.                         EXHIBITS
					------------------         ------------------------------------

					99.1                       Joint Filing Agreement

					99.2                       Item 7 Information

					*  Attention. Intentional misstatements or omissions of fact constitute federal
					criminal violations (see 18 U.S.C. 1001).
				</exhibitInfo>
    <signatureInformation>
      <reportingPersonName>Morgan Stanley</reportingPersonName>
      <signatureDetails>
        <signature>Christopher O'Hara</signature>
        <title>Authorized Signatory, Morgan Stanley</title>
        <date>11/07/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Atlanta Capital Management Company, LLC</reportingPersonName>
      <signatureDetails>
        <signature>Kelly Williams</signature>
        <title>Authorized Signatory, Atlanta Capital Management Company, LLC</title>
        <date>11/07/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Eaton Vance Atlanta Capital SMID-Cap Fund</reportingPersonName>
      <signatureDetails>
        <signature>Kelly Williams</signature>
        <title>Authorized Signatory, Eaton Vance Atlanta Capital SMID-Cap Fund</title>
        <date>11/07/2025</date>
      </signatureDetails>
    </signatureInformation>
  </formData>

</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1 CHARTER
<SEQUENCE>2
<FILENAME>EXHIBIT_NO.99.1.txt
<DESCRIPTION>EXHIBIT NO. 99.1 TO SCHEDULE 13G JOINT FILING AGREEMENT
<TEXT>
CUSIP No.008252108                     13G
--------------------------------------------------------------------------------

                       EXHIBIT NO. 99.1 TO SCHEDULE 13G
                            JOINT FILING AGREEMENT
              ---------------------------------------------------


                              November 07, 2025
              ---------------------------------------------------

              MORGAN STANLEY, Atlanta Capital Management Company, LLC and Eaton

              Vance Atlanta Capital SMID-Cap Fund hereby agree that, unless

              differentiated, this Schedule 13G is filed on behalf of each of

              the parties.


           MORGAN STANLEY

           BY: /s/ Christopher O'Hara
           ---------------------------------------------------------------------
           Christopher O'Hara/Authorized Signatory, Morgan Stanley

           Atlanta Capital Management Company, LLC

           BY: /s/ Kelly Williams
           ---------------------------------------------------------------------
           Kelly Williams/Authorized Signatory,
           Atlanta Capital Management Company, LLC

           Eaton Vance Atlanta Capital SMID-Cap Fund

           BY: /s/ Kelly Williams
           ---------------------------------------------------------------------
           Kelly Williams/Authorized Signatory,
           Eaton Vance Atlanta Capital SMID-Cap Fund

*  Attention. Intentional misstatements or omissions of fact constitute federal
criminal violations (see 18 U.S.C. 1001).
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2 OPIN COUNSEL
<SEQUENCE>3
<FILENAME>EXHIBIT_NO.99.2.txt
<DESCRIPTION>EXHIBIT NO. 99.2 ITEM 7 INFORMATION
<TEXT>
CUSIP No.008252108                     13G
--------------------------------------------------------------------------------

                                 EXHIBIT NO. 99.2
                                ------------------

                                ITEM 7 INFORMATION


             The securities being reported on by Morgan Stanley as a parent

     holding company are owned, or may be deemed to be beneficially owned, by

     Atlanta Capital Management Company, LLC, a wholly-owned subsidiary of

     Morgan Stanley, and Eaton Vance Atlanta Capital SMID-Cap Fund.
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
