Affiliated Managers Group
452 hedge funds and large institutions have $6.32B invested in Affiliated Managers Group in 2025 Q3 according to their latest regulatory filings, with 61 funds opening new positions, 141 increasing their positions, 163 reducing their positions, and 36 closing their positions.
69% more first-time investments, than exits
New positions opened: 61 | Existing positions closed: 36
32% more call options, than puts
Call options by funds: $4.08M | Put options by funds: $3.1M
17% more funds holding in top 10
Funds holding in top 10: 6 → 7 (+1)
4% more funds holding
Funds holding: 433 → 452 (+19)
1.22% less ownership
Funds ownership: 94.43% → 93.22% (-1.2%)
13% less capital inflows, than outflows
Capital inflows: $419M | Capital outflows: $484M
13% less repeat investments, than reductions
Existing positions increased: 141 | Existing positions reduced: 163
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Alyeska Investment Group
Chicago,
Illinois
|
+$65M |
| 2 |
UBS Group
Zurich,
Switzerland
|
+$38.1M |
| 3 |
Holocene Advisors
New York
|
+$33.7M |
| 4 |
Caisse de Depot et Placement du Quebec (CDPQ)
Montreal,
Quebec, Canada
|
+$21.7M |
| 5 |
Raymond James Financial
St Petersburg,
Florida
|
+$16.6M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
-$122M |
| 2 |
Clarkston Capital Partners
Rochester,
Michigan
|
-$44.7M |
| 3 |
Bridgewater Associates
Westport,
Connecticut
|
-$21.1M |
| 4 |
Ariel Investments
Chicago,
Illinois
|
-$20.1M |
| 5 |
Morgan Stanley
New York
|
-$16.7M |
AMG Hedge Fund Activity: Q3 2025 in Review
452 of the 7,650 institutional investors tracked by Wall St. Rank reported a position in Affiliated Managers Group (AMG) for Q3 2025, worth a combined $6.32B — up 20% from $5.28B a quarter earlier.
Buyers outnumbered sellers: 61 funds opened new AMG positions and 36 closed out — a net gain of 25 holders — while 141 added to existing stakes and 163 trimmed.
The largest buyer was Alyeska Investment Group, opening a new position worth an estimated $65M. The largest seller was Millennium Management, cutting an estimated $122M.
- 452 institutional investors held Affiliated Managers Group (AMG) as of Q3 2025, up from 433 in Q2 2025.
- Funds reported $6.32B of Affiliated Managers Group stock for Q3 2025, up 20% quarter-over-quarter.
- 61 funds opened new Affiliated Managers Group positions in Q3 2025 and 36 closed out, a net change of +25 holders.
- The largest Affiliated Managers Group buyer in Q3 2025 was Alyeska Investment Group, an estimated $65M added.
- The largest Affiliated Managers Group seller in Q3 2025 was Millennium Management, an estimated $122M sold.
Based on aggregated 13F filings for Q3 2025.