UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT PURSUANT
TO SECTION 13 OR 15(D) OF THE
SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported):  May 31, 2011

Affiliated Managers Group, Inc.

(Exact Name of Registrant as Specified in Its Charter)

Delaware

(State or Other Jurisdiction of Incorporation)

(617) 747-3300

(Registrant’s Telephone Number, Including Area Code)

N/A

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

o            Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o            Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o            Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o            Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

ITEM 5.07     Submission of Matters to a Vote of Security Holders.

The Annual Meeting of Stockholders of Affiliated Managers Group, Inc. (“AMG”) was held in Prides Crossing, Massachusetts on May 31, 2011.  At that meeting, the stockholders considered and acted upon the following proposals:

1.  The Election of Directors.  By the vote reflected below, the stockholders elected the following individuals to serve as directors until the 2012 Annual Meeting of Stockholders and until their respective successors are duly elected and qualified:

2.  The Approval of the 2011 Stock Option and Incentive Plan.  By the vote reflected below, the stockholders voted to approve the 2011 Stock Option and Incentive Plan:

3.  Non-Binding Advisory Vote on Executive Compensation.  By the vote reflected below, the stockholders voted to approve the compensation paid to the named executive officers:

4.  Non-Binding Advisory Vote on Frequency of Executive Compensation Advisory Votes.  By the vote reflected below, the stockholders recommended that an advisory vote to approve the compensation of AMG’s named executive officers occur every year:

Based on the results of this vote, AMG will implement an annual advisory vote on executive compensation until the next vote on frequency.

5.  The Ratification of the Selection of PricewaterhouseCoopers LLP as AMG’s Independent Registered Public Accounting Firm for the Current Fiscal Year.  By the vote reflected below, the stockholders voted to ratify the selection of PricewaterhouseCoopers LLP as AMG’s independent registered public accounting firm for the current fiscal year:

There were no broker non-votes on this proposal.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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