Affiliated Managers Group
AMG · NYSE
$388.75+$3.65 (+0.95%)TodayMarket closed ·
Prev close $385.10
Who owns AMG
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 42.7% of AMG’s shares.
- BlackRock Institutional Trust Company, N.A.8.6%
- Vanguard Portfolio Management, LLC5.3%
- Atlanta Capital Management Company, L.L.C.4.4%
- Vanguard Capital Management, LLC4.4%
- Next 6 largest institutions20.0%
- All other shareholders57.3%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 2.28M | 8.63% |
| Vanguard Portfolio Management, LLC | 1.39M | 5.27% |
| Atlanta Capital Management Company, L.L.C. | 1.18M | 4.45% |
| Vanguard Capital Management, LLC | 1.15M | 4.36% |
| Boston Partners | 1.00M | 3.79% |
| Ariel Investments, LLC | 999.68K | 3.79% |
| State Street Investment Management (US) | 883.32K | 3.34% |
| Millennium Management LLC | 875.12K | 3.31% |
| Fuller & Thaler Asset Management Inc. | 857.76K | 3.25% |
| Dimensional Fund Advisors, L.P. | 670.20K | 2.54% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Core S&P Mid-Cap ETF | 924.70K | 3.50% |
| Vanguard Total Stock Market Index Fund | 798.88K | 3.02% |
| Eaton Vance-Atlanta Capital SMID-Cap Fund | 769.40K | 2.91% |
| Fuller & Thaler Behavioral Small-Cap Equity Fund | 729.60K | 2.76% |
| John Hancock Disciplined Value Mid Cap Fund | 687.02K | 2.60% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders bought $687.40K (2 trades) and sold $7.26M (3 trades) of AMG on the open market.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Matos Rodriguez Felix V. | Option exercise | 848 | — |
| Matos Rodriguez Felix V. | Option exercise | 848 | — |
| FRANQUI ANNETTE | Option exercise | 477 | — |
| FRANQUI ANNETTE | Option exercise | 477 | — |
| Matos Rodriguez Felix V. | Option exercise | 654 | — |
| Matos Rodriguez Felix V. | Option exercise | 654 | — |
| STARR LOREN M | Option exercise | 716 | — |
| STARR LOREN M | Option exercise | 716 | — |
| Palandjian Tracy P. | Option exercise | 848 | — |
| Palandjian Tracy P. | Option exercise | 848 | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 1.01M
- Days to cover
- 3.02
- % of shares outstanding
- 3.82%
- Average daily volume
- 334.67K
- Change since last report
- −2.9%
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