AFFILIATED MANAGERS GROUP, INC.
Total Trades
11
Buys
3
Sells
4
Largest Trade
$1M+
Insiders
5
Institutional Funds
433
Inst. Value
$1M+
Activist Filings
22
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Wojcik Thomas M | President and COO | SELL | $1M+ | 16K | $231.03 | Sep 9, 2025 |
| Wojcik Thomas M | President and COO | EXERCISE | $1M+ | 169K | $74.49 | Sep 9, 2025 |
| Horgen Jay C. | President and CEO | SELL | $1M+ | 18K | $170.94 | Aug 20, 2024 |
| Horgen Jay C. | President and CEO | EXERCISE | $1M+ | 200K | $74.49 | Aug 20, 2024 |
| Wojcik Thomas M | COO | EXERCISE | $1M+ | 128K | $74.49 | Aug 20, 2024 |
| Wojcik Thomas M | COO | SELL | $500K+ | 5K | $172.71 | Aug 20, 2024 |
| Jamal Rizwan M | Head of Affiliate … | EXERCISE | $1M+ | 429K | $74.49 | Aug 20, 2024 |
| Jamal Rizwan M | Head of Affiliate … | SELL | $1M+ | 9K | $172.89 | Aug 20, 2024 |
| Jeffery Reuben III | Director | BUY | $500K+ | 4K | $137.21 | Mar 17, 2023 |
| Palandjian Tracy P. | Director | BUY | $500K+ | 4K | $137.67 | Feb 24, 2022 |
| Jeffery Reuben III | Director | BUY | $500K+ | 4K | $143.96 | Feb 16, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 433 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| STATE STREET CORP | 929K | $1M+ | SH |
| Clarkston Capital Partners, LLC | 904K | $1M+ | SH |
| FULLER & THALER ASSET MANAGEMENT, INC. | 686K | $1M+ | SH |
| FULLER & THALER ASSET MANAGEMENT, INC. | 686K | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 607K | $1M+ | SH |
| LYRICAL ASSET MANAGEMENT LP | 552K | $1M+ | SH |
| LSV ASSET MANAGEMENT | 473K | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 453K | $1M+ | SH |
| NORGES BANK | 395K | $1M+ | SH |
| Allianz Asset Management GmbH | 306K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 306K | $1M+ | SH |
| Channing Capital Management, LLC | 291K | $1M+ | SH |
| BRUNI J V & CO /CO | 252K | $1M+ | SH |
| Fisher Asset Management, LLC | 244K | $1M+ | SH |
| Kiltearn Partners LLP | 236K | $1M+ | SH |
| BALYASNY ASSET MANAGEMENT L.P. | 232K | $1M+ | SH |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 193K | $1M+ | SH |
| BlackRock, Inc. | 172K | $1M+ | SH |
| RAYMOND JAMES FINANCIAL INC | 151K | $1M+ | SH |
| Alyeska Investment Group, L.P. | 145K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Mar 5, 2026
10.2%
2.7M shares
Clarkston Capital Partners, LLC
SC 13G/A · Feb 13, 2026
3.2%
904K shares
SC 13G/A · Nov 7, 2025
7.0%
2.0M shares
Integrated Core Strategies (US) LLC
SC 13G/A · Oct 30, 2025
3.4%
975K shares
SC 13G/A · Oct 30, 2025
9.8%
2.8M shares
Integrated Core Strategies (US) LLC
SC 13G · Jun 6, 2025
5.3%
1.5M shares
Integrated Core Strategies (US) LLC
SC 13G · May 14, 2025
4.3%
1.2M shares
Clarkston Capital Partners, LLC
SC 13G/A · Feb 14, 2025
5.2%
1.6M shares
Morgan Stanley I.R.S. # 36-3145972
SC 13G/A · Nov 6, 2024
8.0%
2.4M shares
SC 13G/A · Jun 7, 2024
10.2%
3.2M shares
EdgePoint Investment Group Inc.
SC 13G/A · Feb 14, 2024
0.0%
0 shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
10.8%
3.7M shares
Clarkston Capital Partners, LLC
SC 13G/A · Feb 12, 2024
6.6%
2.2M shares
Morgan Stanley I.R.S. # 36-3145972
SC 13G/A · Feb 12, 2024
7.0%
2.4M shares
SC 13G/A · Jan 24, 2024
9.8%
3.3M shares
SC 13G/A · Dec 6, 2023
10.1%
3.4M shares
Clarkston Capital Partners, LLC
SC 13G · Feb 14, 2023
5.9%
2.2M shares
SC 13G/A · Jan 24, 2023
9.3%
3.5M shares
EdgePoint Investment Group Inc.
SC 13G/A · Jan 10, 2023
8.2%
3.1M shares
The Vanguard Group - 23-1945930
SC 13G/A · Nov 10, 2022
10.1%
3.9M shares
EdgePoint Investment Group Inc.
SC 13G/A · Feb 11, 2022
14.4%
5.8M shares
SC 13G/A · Feb 1, 2022
9.1%
3.7M shares