Morgan Stanley - Sep 30, 2025 SCHEDULE 13G/A Report for AFFILIATED MANAGERS GROUP, INC. Common Stock (AMG)

Filing Manager
MORGAN STANLEY
Reporting Manager
Morgan Stanley
Security
AFFILIATED MANAGERS GROUP, INC. Common Stock
Symbol
AMG
Shares outstanding
28.3M shares
Disclosed Ownership
1.98M shares
Ownership
7%
Form type
SCHEDULE 13G/A
Date filed
11/7/2025, 12:16 PM
Date of event
Sep 30, 2025
SEC
View on sec.gov

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Morgan Stanley 7% 1.98M 0 1.8M Christopher O'Hara Authorized Signatory, Morgan Stanley
Atlanta Capital Management Company, LLC 6.3% 1.78M 0 1.61M Kelly Williams Authorized Signatory, Atlanta Capital Management Company, LLC
Eaton Vance Atlanta Capital SMID-Cap Fund 4.5% 1.28M 0 1.28M Kelly Williams Authorized Signatory, Eaton Vance Atlanta Capital SMID-Cap Fund