The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.
  UNITED STATES SECURITIES AND EXCHANGE COMMISSION OMB APPROVAL
  Washington, D.C. 20549
FORM 13F
OMB Number:   3235-0006
Expires:          July 31, 2015
Estimated average burden
hours per response:       23.8


FORM 13F COVER PAGE


Report for the Calendar Year or Quarter Ended:
06-30-2021
 
Check here if Amendment:      Amendment Number:
 
This Amendment (Check only one.):      is a restatement.
       adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name: AFFILIATED MANAGERS GROUP, INC. 
Address: 777 SOUTH FLAGLER DRIVE 
  SUITE 1401 EAST TOWER 
  WEST PALM BEACH  FL  33401 
Form 13F File Number:   028-04975 

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name: David M. Billings 
Title: General Counsel and Secretary 
Phone: 617-747-3300 

Signature, Place, and Date of Signing:

David M. Billings  Prides Crossing,  MASSACHUSETTS 08-13-2021 
[Signature] [City, State] [Date]

Do you wish to provide information pursuant to Special Instruction 5?   X  Yes          No

Additional Information

Affiliated Managers Group, Inc. ('AMG') is making this 13F information filing as a majority owner of certain affiliated institutional investment management firms that are subject to applicable 13F filing requirements. AMG expressly disclaims beneficial ownership of all reported securities. AMG does not exercise voting or investment power over any reported security. Each AMG affiliate exercises such power independently of AMG and each other.

Report Type (Check only one.):

     13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.)

X  13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).)

     13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).)


List of Other Managers Reporting for this Manager
[If there are no entries in this list, omit this section.]

Form 13F File Number Name
028-11395  AMG Funds LLC 
028-16284  Artemis Investment Management LLP 
028-05582  FIRST QUADRANT L P/Cav 
028-11858  Foyston, Gordon, & Payne Inc 
028-01185  FRONTIER CAPITAL MANAGEMENT CO LLC 
028-04145  GW&K Investment Management, LLC 
028-10955  Genesis Investment Management, LLP 
028-04434  HARDING LOEVNER LP 
028-11968  MYCIO WEALTH PARTNERS, LLC 
028-04884  RENAISSANCE GROUP LLC 
028-11487  River Road Asset Management, LLC 
028-05015  SYSTEMATIC FINANCIAL MANAGEMENT LP 
028-11289  THIRD AVENUE MANAGEMENT LLC 
028-11092  TimesSquare Capital Management, LLC 
028-01222  TWEEDY BROWNE CO LLC// 
028-10942  Veritable, L.P. 
028-14794  Veritas Asset Management LLP 
028-00262  WELCH & FORBES LLC 
028-03760  YACKTMAN ASSET MANAGEMENT LP 

Form 13F Summary Page

Report Summary:

Number of Other Included Managers:  
Form 13F Information table Entry Total:  
Form 13F Information table Value Total:  
  (thousands)

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F number(s) of all institutional investement managers with respect to which this report is filed, other than the manager filing this report.

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