AFFILIATED MANAGERS GROUP, INC.

AMGNYSE

$371.43-0.52 (-0.14%)as of Oct 2, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

AFFILIATED MANAGERS GROUP, INC. price and activity chart data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (+57.0%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
BlackRock, Inc.	10.50%	$938M	0.01%	Not reported
Morgan Stanley	5.63%	$503M	0.03%	Not reported
Vanguard Portfolio Management LLC	5.27%	$471M	0.02%	Not reported
Vanguard Capital Management LLC	4.36%	$390M	0.01%	Not reported
Ariel Investments, LLC	3.78%	$338M	3.37%	Reduce 6.05%
State Street Corp	3.34%	$299M	0.01%	Not reported
Millennium Management LLC	3.31%	$296M	0.11%	Not reported
Fuller & Thaler Asset Management, Inc.	3.25%	$290M	0.79%	Not reported
Dimensional Fund Advisors LP	2.54%	$227M	0.04%	Not reported
Geode Capital Management, LLC	2.24%	$200M	0.01%	Not reported
LSV Asset Management	2.02%	$181M	0.33%	Add 11.91%
Allianz Asset Management GmbH	1.82%	$153M	0.14%	Not reported
Lyrical Asset Management LP	1.79%	$160M	2.03%	Reduce 5.82%
Bank of America Corp	1.64%	$146M	0.01%	Not reported
Invesco Ltd.	1.44%	$129M	0.01%	Not reported
Norges Bank	1.37%	$122M	0.01%	Not reported
Northern Trust Corp	1.22%	$109M	0.01%	Not reported
Jane Street Group, LLC	1.17%	$105M	0.01%	Not reported
Channing Capital Management, LLC	1.15%	$102M	2.36%	Reduce 0.05%
Charles Schwab Investment Management Inc	1.09%	$97.4M	0.01%	Not reported
Bank of New York Mellon Corp	1.07%	$95.4M	0.02%	Not reported
Qube Research & Technologies Ltd	1.02%	$90.9M	0.08%	Not reported
Goldman Sachs Group Inc	0.98%	$87.4M	0.01%	Not reported
Fisher Asset Management, LLC	0.93%	$83.4M	0.02%	Reduce 2.68%
Raymond James Financial Inc	0.91%	$81M	0.02%	Not reported
Clarkston Capital Partners, LLC	0.87%	$77.4M	6.54%	Reduce 27.10%
Bruni J V & Co	0.80%	$71.1M	6.49%	Reduce 15.88%
Citadel Advisors LLC	0.75%	$67.2M	0.01%	Not reported
Alliancebernstein L.P.	0.72%	$52.5M	0.02%	Not reported
Kiltearn Partners LLP	0.70%	$62.5M	15.16%	Reduce 5.40%
Caisse de depot et placement du Quebec	0.69%	$61.6M	0.09%	Reduce 17.59%
FMR LLC	0.67%	$60.1M	0.00%	Not reported
UBS Group AG	0.67%	$59.5M	0.01%	Not reported
Vanguard Fiduciary Trust Co	0.63%	$56.1M	0.01%	Not reported
Lord, Abbett & Co. LLC	0.62%	$55.7M	0.16%	Add 6.34%
JPMorgan Chase & Co	0.49%	$44.7M	0.00%	Not reported
Renaissance Technologies LLC	0.44%	$39.7M	0.05%	Not reported
Sei Investments Co	0.44%	$39.6M	0.04%	Not reported
Nomura Asset Management International Inc.	0.44%	$39.3M	0.06%	Add 14.18%
Treasurer of the State of North Carolina	0.43%	$38.4M	0.10%	Add 9.71%
Quantinno Capital Management LP	0.41%	$36.8M	0.04%	Add 14.39%
Loomis Sayles & Co L P	0.39%	$34.9M	0.04%	Add 19.95%
Wells Fargo & Company	0.35%	$31.7M	0.01%	Not reported
First Trust Advisors LP	0.34%	$30.5M	0.02%	Add 60.47%
New York State Common Retirement Fund	0.34%	$30.1M	0.04%	Not reported
Arbejdsmarkedets Tillaegspension	0.34%	$30M	0.65%	Reduce 3.60%
Polar Capital Holdings Plc	0.32%	$28.9M	0.07%	Reduce 2.20%
Empowered Funds, LLC	0.31%	$27.7M	0.15%	Add 8.18%
Victory Capital Management Inc	0.29%	$26.1M	0.01%	Not reported
Retirement Systems of Alabama	0.29%	$25.6M	0.08%	Reduce 12.36%

50 of 532 holders

Activity score

Premium

100

WEAK

STRONG

Unlock

AI Activity Analysis

Premium

Coming soonAI reads of insider, institutional and company activity will appear here for Premium accounts.

Historical Activity Patterns

Premium

Historical Activity PatternsHistorical periods where multiple activity categories converged, with subsequent market performance shown for context.Unlock