Affiliated Managers Group, Inc. AMG

Set alert

364.49 USD -4.97 (-1.35%)

At closeNov 4, 2026, 4:00 PM EST

364.49 0.00 0.00%

After hours · Nov 4, 4:00 PM ET

350.93 Day range 378.53

246.11 52-week range 400.13

Held by insiders 4.23%

Held by institutions 100.60%

Float held by institutions 105.05%

Institutions 760

Top institutional holders
Holder	% held	Shares	Value	Reported
Blackrock Inc.	10.72%	2,772,736	1.01B	Jun 29, 2026
Morgan Stanley	5.75%	1,487,219	541.07M	Jun 29, 2026
Vanguard Portfolio Management LLC	5.38%	1,391,836	506.36M	Jun 29, 2026
Vanguard Capital Management LLC	4.45%	1,151,085	418.78M	Jun 29, 2026
Boston Partners	3.87%	1,001,967	364.53M	Jun 29, 2026
Ariel Investments, LLC	3.87%	999,676	363.69M	Jun 29, 2026

Top mutual fund holders
Holder	% held	Shares	Value	Reported
iShares Trust-iShares Core S&P Mid-Cap ETF	3.56%	921,149	335.12M	Sep 29, 2026
Capitol Series Trust-FullerThaler Behavioral Small-Cap Equity Fund	3.15%	815,790	296.79M	Jun 29, 2026
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund	3.08%	796,439	289.75M	Jun 29, 2026
Eaton Vance Growth Trust-Eaton Vance Atlanta Capital SMID-Cap Fund	3.04%	785,100	285.63M	Jun 29, 2026
John Hancock Funds III-Disciplined Value Mid Cap Fund	2.58%	665,968	242.29M	Aug 30, 2026
VANGUARD INDEX FUNDS-Vanguard Small-Cap Index Fund	2.23%	575,609	209.41M	Jun 29, 2026

AMG insiders
Insider	Relation	Latest transaction	Date	Shares held
ALVINGHAM KAREN L.	Director	Conversion of Exercise of derivative security	Mar 4, 2026	13,043
CATES G. STALEY	Director	Purchase	May 5, 2026	6,405
CHURCHILL DWIGHT D	Director	Conversion of Exercise of derivative security	Aug 14, 2025	29,030
HORGEN JAY C	Chief Executive Officer	Sale	Jun 7, 2026	588,764
JEFFERY REUBEN III	Director	Conversion of Exercise of derivative security	Dec 30, 2024	34,274
MATOS RODRIGUEZ FELIX V	Director	Conversion of Exercise of derivative security	Aug 13, 2026	5,023

Held by funds