Affiliated Managers Group, Inc.
AMG- Exchange
- NYSE
- Industry
- Investment Advice
- SEC CIK
- 0001004434
No open-market purchases or sales by Affiliated Managers Group, Inc. insiders were filed in the last 90 days; 571 institutions reported holding it in 13F filings for Q2 2026, worth $8.53B in total; Southeastern Asset Management (Longleaf) is the only superinvestor holding it.
Key figures
- Market capClose on Nov 12, 2026
- $9.71B
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, +26 vs. previous quarter
- 571
- 13F valueReported value at the end of Q2 2026
- $8.53B
- Superinvestors holdingAt the end of Q2 2026
- 1
Price chart
Financials
See financial statementsFrom SEC filings, in USD.
- Revenue, FY2025
- $2.07B
- +1.6% year over year
- Net income, FY2025
- $716.6M
- +40.1% year over year
- Free cash flow, FY2025
- $967.1M
- +4.1% year over year
- Revenue, Q3 FY2026
- $595.2M
- +12.7% year over year
Revenue flow, FY2025
Green is profit; orange is costs, expenses and taxes. Percentages are shares of revenue.
Short interest
See short dataFrom FINRA, settlement date Oct 30, 2026.
- Short interest
- 795.0K
- Shares sold short
- Change
- −150.3K
- −15.9% vs. previous
- Days to cover
- 3.19
- At average daily volume
Superinvestors holding AMG, Q2 2026
Go to the superinvestors tab1 superinvestor reports holding Affiliated Managers Group, Inc. on Form 13F. Percentages are the stock's share of each portfolio.
Southeastern Asset Management (Longleaf)
Mason Hawkins
0.1%
Affiliated Managers Group, Inc.'s share of the portfolio
- Shares
- 5,562
- Value
- $1.88M
Latest insider trades
See all insider tradesOpen-market purchases and sales by Affiliated Managers Group, Inc. insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jun 8, 2026 (view filing) | Jun 8 | Same day | Horgen Jay C.President and CEO | SSale | −17.5K | $338.27 | −$5.92M | −7.9%204.7K after | |
| Jun 3, 2026 (view filing) | Jun 1 | 2 days | Franqui AnnetteDirector | PPurchase | +750 | $304.88 | +$228.7K | +61.9%1.96K after | |
| May 8, 2026 (view filing) | May 8 | Same day | Matos Rodriguez Felix V.Director | SSale | −1.00K | $300.18 | −$300.2K | −18.6%4.37K after | |
| May 8, 2026 (view filing) | May 6 | 2 days | Ryan David ChristopherDirector | SSale | −3.40K | $305.06 | −$1.04M | −75.7%1.09K after | |
| May 6, 2026 (view filing) | May 6 | Same day | Cates G. StaleyDirector | PPurchase | +1.50K | $305.83 | +$458.7K | +30.6%6.41K after | |
| Mar 9, 2026 (view filing) | Mar 6 | 3 days | Wojcik Thomas MPresident and COO | SSale | −8.00K | $286.30 | −$2.29M | −4.8%159.5K after | |
| Mar 9, 2026 (view filing) | Mar 9 | Same day | Padiyar KavitaGeneral Counsel & Corp. Sec. | SSale | −2.20K | $278.24 | −$612.1K | −4.9%42.7K after | |
| Sep 9, 2025 (view filing) | Sep 9 | Same day | Wojcik Thomas MPresident and COO | SSale | −16.0K | $231.03 | −$3.70M | −9.2%158.7K after | |
| Aug 20, 2024 (view filing) | Aug 19-20 | 1 day | Horgen Jay C.President and CEO | SSale | −18.3K | $170.94 | −$3.13M | −4.7%368.0K after | 2 lots |
| Aug 20, 2024 (view filing) | Aug 16 | 4 days | Wojcik Thomas MChief Operating Officer | SSale | −4.79K | $172.71 | −$826.6K | −5.4%84.4K after |
Top 10 13F holders, Q2 2026
See all 571 holdersThe largest institutional positions in Affiliated Managers Group, Inc. at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 2,772,736 | $938.3M | 0.01% | −94,929−3.3% | Reduced |
| Morgan Stanley | 1,487,219 | $503.3M | 0.03% | −245,293−14.2% | Reduced |
| Vanguard Portfolio Management LLC | 1,391,836 | $471.0M | 0.02% | +32,043+2.4% | Added |
| Vanguard Capital Management LLC | 1,151,085 | $389.5M | 0.01% | −23,661−2.0% | Reduced |
| Boston Partners | 1,001,967 | $339.1M | 0.30% | +30,720+3.2% | Added |
| Ariel Investments, LLC | 999,676 | $338.3M | 3.37% | −64,354−6.0% | Reduced |
| State Street Corp | 883,323 | $298.9M | 0.01% | −43,410−4.7% | Reduced |
| Millennium Management LLC | 875,116 | $296.1M | 0.20% | +869,748+16,202.5% | Added |
| Fuller & Thaler Asset Management, Inc. | 857,756 | $290.3M | 0.79% | +97,543+12.8% | Added |
| Dimensional Fund Advisors LP | 670,195 | $226.8M | 0.04% | −48,118−6.7% | Reduced |
Holders of 5% or more of AMG
See all 3 holders and filingsHolders whose latest Schedule 13D or 13G filing reports 5% or more of Affiliated Managers Group, Inc..
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Morgan Stanley | 13G/A | 5.50%1.46M shares | −1.50 ppfrom 7.00% | Dec 10, 20217 filings | Aug 12, 2026 | SEC |
| Vanguard Capital Management LLC | 13G | 5.19%1.39M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
| Vanguard Portfolio Management LLC | 13G | 5.12%1.37M shares | New | Apr 28, 20261 filing | Apr 28, 2026 | SEC |
Politician trades
All politician trades in AMG2 members of Congress reported 2 trades in Affiliated Managers Group, Inc. since 2020. Newest filings:
| Filed | Politician | Type | Amount |
|---|---|---|---|
| May 7, 2020 |  Dean Phillips House · MN | Sell | $1K-$15K |
| Apr 16, 2020 |  Gilbert Ray Cisneros, Jr. House · CA | Sell | $1K-$15K |
House · MN · May 7, 2020
Sell$1K-$15K
House · CA · Apr 16, 2020
Sell$1K-$15K