SEC FORM 13F-NT

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
Washington, D.C. 20549
FORM 13F

FORM 13F COVER PAGE

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Report for the Calendar Year or Quarter Ended:03-31-2019
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 1201 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. BillingsPrides CrossingMA05-14-2019
[Signature][City, State][Date]
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.)
X13F 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 NumberName
028-11395AMG Funds LLC
028-16284Artemis Investment Management LLP
028-05835CHICAGO EQUITY PARTNERS LLC
028-05582FIRST QUADRANT L P/CA
028-11858Foyston, Gordon, & Payne Inc
028-01185FRONTIER CAPITAL MANAGEMENT CO LLC
028-04145GW&K Investment Management, LLC
028-10957Genesis Asset Managers, LLP
028-10955Genesis Investment Management, LLP
028-04434HARDING LOEVNER LP
028-04534HARTWELL J M LIMITED PARTNERSHIP
028-11968MYCIO WEALTH PARTNERS, LLC
028-04884RENAISSANCE GROUP LLC
028-11487River Road Asset Management, LLC
028-03489SOUTHERNSUN ASSET MANAGEMENT, LLC
028-05015SYSTEMATIC FINANCIAL MANAGEMENT LP
028-11289THIRD AVENUE MANAGEMENT LLC
028-11092TimesSquare Capital Management, LLC
028-01222TWEEDY BROWNE CO LLC//
028-10942Veritable, L.P.
028-14794Veritas Asset Management LLP
028-00262WELCH & FORBES LLC
028-03760YACKTMAN ASSET MANAGEMENT LP