AMG AFFILIATED MANAGERS GROUP

Stock (common), issuer CIK 1004434

Filings received so far for Q3 2026: 24 13F filers report a position in AMG shares at 2026-09-30. The quarter is not complete: its 13F deadline is 2026-11-14, and the counts grow as filings arrive.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q3 2026

Filers in the available 13F reports with a share position at 2026-09-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

Holder	Shares	Value	% of portfolio	Change	Source
REINHART PARTNERS, LLC.	16,444	$6.01M	0.15%	-3,213	13F-HR Timeline
Gradient Investments LLCin group Gradient Investments LLC	6,925	$2.53M	0.04%	-140	13F-HR Timeline Group
PRIVATE CLIENT SERVICES, LLC	3,693	$1.35M	0.36%	+44	13F-HR Timeline
Legacy Wealth Asset Management, LLC	2,006	$733K	0.16%	-35	13F-HR Timeline
GAMMA Investing LLC	1,674	$612K	0.02%	+81	13F-HR Timeline
Farther Finance Advisors, LLC	1,577	$577K	<0.01%	-1,050	13F-HR Timeline
Cadent Capital Advisors, LLC	1,134	$415K	0.09%	0	13F-HR Timeline
Bank of New Hampshire	1,061	$388K	0.08%	-25	13F-HR Timeline
Wedmont Private Capital	883	$342K	0.01%	+112	13F-HR Timeline
Investment Partners Asset Management, I…	836	$306K	0.17%	0	13F-HR Timeline
DIVERSIFIED MANAGEMENT INC	740	$271K	0.05%	new	13F-HR Timeline
Cooper Financial Group	579	$212K	0.02%	-63	13F-HR Timeline
Versant Capital Management, Inc	548	$200K	0.02%	+36	13F-HR Timeline
AMERICAN NATIONAL BANK & TRUST	255	$93.2K	0.01%	-22	13F-HR Timeline
CX Institutional	66	$24K	<0.01%	0	13F-HR Timeline
ELEVATION WEALTH PARTNERS, LLC	64	$23.4K	0.01%	+29	13F-HR Timeline
Bullock Wealth Management Group	41	$15.2K	0.01%	0	13F-HR Timeline
Grove Bank & Trust	39	$14.3K	<0.01%	0	13F-HR Timeline
MassMutual Private Wealth & Trust, FSB	22	$8.04K	<0.01%	-11	13F-HR Timeline
Marquette Asset Management, LLC	13	$4.75K	<0.01%	0	13F-HR Timeline
GoalVest Advisory LLC	7	$2.56K	<0.01%	new	13F-HR Timeline
Byrne Asset Management LLC	6	$2.23K	<0.01%	new	13F-HR Timeline
CoreCap Advisors, LLC	3	$1.1K	<0.01%	-1	13F-HR Timeline
Wealth Enhancement Trust Services, Inc.	1	$366	<0.01%	0	13F-HR Timeline