Affiliated Managers Group, Inc. (AMG)
Financial Services
Asset Management
366.70 $
+0.3%
vs. previous close
Closing price · As of: 31. Jul 2026
Who owns Affiliated Managers Group, Inc. (AMG)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 96.2% of the shares are freely tradable; institutional investors hold 98.8%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
98.8%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
4.1%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
96.2%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
4.5%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
26Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 10.86 | 2,867,665 | +2.4 | 03/31/2026 |
| Morgan Stanley - Brokerage Accounts | 6.56 | 1,732,512 | +1.6 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 5.15 | 1,359,793 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.45 | 1,174,746 | +0.0 | 03/31/2026 |
| Ariel Investments, LLC | 4.03 | 1,064,030 | -10.0 | 03/31/2026 |
| Boston Partners Global Investors, Inc | 3.68 | 971,247 | -14.6 | 03/31/2026 |
| State Street Corp | 3.51 | 926,733 | -0.3 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Eaton Vance Atlanta Capital SMID-Cap I | 3.44 | 908,630 | -7.3 | 05/31/2026 |
| iShares Core S&P Mid-Cap ETF | 3.42 | 903,698 | +0.2 | 07/28/2026 |
| Vanguard Morn Total Stk Mkt Idx Investor | 3.02 | 796,579 | -1.4 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.