<SEC-DOCUMENT>0001004434-19-000011-index.html : 20190401
<SEC-HEADER>0001004434-19-000011.hdr.sgml : 20190401
<ACCEPTANCE-DATETIME>20190401164035
ACCESSION NUMBER:		0001004434-19-000011
CONFORMED SUBMISSION TYPE:	10-K/A
PUBLIC DOCUMENT COUNT:		8
CONFORMED PERIOD OF REPORT:	20181231
FILED AS OF DATE:		20190401
DATE AS OF CHANGE:		20190401

FILER:

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

	FILING VALUES:
		FORM TYPE:		10-K/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13459
		FILM NUMBER:		19721273

	BUSINESS ADDRESS:	
		STREET 1:		777 SOUTH FLAGLER DRIVE
		STREET 2:		SUITE 1201 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 1201 EAST TOWER
		CITY:			WEST PALM BEACH
		STATE:			FL
		ZIP:			33401

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AFFILIATED MANAGERS GROUP INC
		DATE OF NAME CHANGE:	19970822
</SEC-HEADER>
<DOCUMENT>
<TYPE>10-K/A
<SEQUENCE>1
<FILENAME>a10-kaxpart1aqr2018.htm
<DESCRIPTION>10-K/A
<TEXT>
Document 1 - file: a10-kaxpart1aqr2018.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.2
<SEQUENCE>2
<FILENAME>exhibit232aqr2018.htm
<DESCRIPTION>EXHIBIT 23.2
<TEXT>
Document 2 - file: exhibit232aqr2018.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.3
<SEQUENCE>3
<FILENAME>exhibit313aqr2018.htm
<DESCRIPTION>EXHIBIT 31.3
<TEXT>
Document 3 - file: exhibit313aqr2018.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.4
<SEQUENCE>4
<FILENAME>exhibit314aqr2018.htm
<DESCRIPTION>EXHIBIT 31.4
<TEXT>
Document 4 - file: exhibit314aqr2018.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32.3
<SEQUENCE>5
<FILENAME>exhibit323aqr2018.htm
<DESCRIPTION>EXHIBIT 32.3
<TEXT>
Document 5 - file: exhibit323aqr2018.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32.4
<SEQUENCE>6
<FILENAME>exhibit324aqr2018.htm
<DESCRIPTION>EXHIBIT 32.4
<TEXT>
Document 6 - file: exhibit324aqr2018.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>7
<FILENAME>exhibit991aqr2018.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
Document 7 - file: exhibit991aqr2018.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>amglogoa30.jpg
<TEXT>
Document 8 - file: amglogoa30.jpg

</DOCUMENT>
</SEC-DOCUMENT>