Affiliated Managers Group, Inc. AMG

Set alert

350.54 USD -13.95 (-3.83%)

At closeNov 5, 2026, 4:00 PM EST

350.54 0.00 0.00%

After hours · Nov 5, 4:00 PM ET

349.32 Day range 365.24

250.46 52-week range 399.02

Held by insiders 4.23%

Held by institutions 100.62%

Float held by institutions 105.07%

Institutions 761

Top institutional holders
Holder	% held	Shares	Value	Reported
Blackrock Inc.	10.72%	2,772,736	970.32M	Jun 29, 2026
Morgan Stanley	5.75%	1,487,219	520.45M	Jun 29, 2026
Vanguard Portfolio Management LLC	5.38%	1,391,836	487.07M	Jun 29, 2026
Vanguard Capital Management LLC	4.45%	1,151,085	402.82M	Jun 29, 2026
Boston Partners	3.87%	1,001,967	350.64M	Jun 29, 2026
Ariel Investments, LLC	3.87%	999,676	349.84M	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	322.36M	Sep 29, 2026
Capitol Series Trust-FullerThaler Behavioral Small-Cap Equity Fund	3.15%	815,790	285.49M	Jun 29, 2026
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund	3.08%	796,439	278.71M	Jun 29, 2026
Eaton Vance Growth Trust-Eaton Vance Atlanta Capital SMID-Cap Fund	3.04%	785,100	274.75M	Jun 29, 2026
John Hancock Funds III-Disciplined Value Mid Cap Fund	2.58%	665,968	233.06M	Sep 29, 2026
VANGUARD INDEX FUNDS-Vanguard Small-Cap Index Fund	2.23%	575,609	201.43M	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	Conversion of Exercise of derivative security	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