Acadian Asset Management
AAMI
257 hedge funds and large institutions have $1.67B invested in Acadian Asset Management in 2025 Q4 according to their latest regulatory filings, with 36 funds opening new positions, 90 increasing their positions, 100 reducing their positions, and 25 closing their positions.
44% more first-time investments, than exits
New positions opened: 36 | Existing positions closed: 25
2% more funds holding
Funds holding: 251 → 257 (+6)
1.49% more ownership
Funds ownership: 97.77% → 99.26% (+1.5%)
1% less capital invested
Capital invested by funds: $1.68B → $1.67B (-$18.7M)
10% less repeat investments, than reductions
Existing positions increased: 90 | Existing positions reduced: 100
50% less funds holding in top 10
Funds holding in top 10: 4 → 2 (-2)
100% less call options, than puts
Call options by funds: $0 | Put options by funds: $5K
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
WP
Woodline Partners
San Francisco,
California
|
+$22.5M |
| 2 |
SG Americas Securities
New York
|
+$15.5M |
| 3 |
SFM
Soros Fund Management
New York
|
+$12.9M |
| 4 |
Federated Hermes
Pittsburgh,
Pennsylvania
|
+$9.94M |
| 5 |
Jennison Associates
New York
|
+$8.27M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Amundi
Paris,
France
|
-$11.4M |
| 2 |
Jane Street
New York
|
-$7.39M |
| 3 |
ECP
Empyrean Capital Partners
Los Angeles,
California
|
-$6.29M |
| 4 |
Deutsche Bank
Frankfurt Am Main Ge,
Germany
|
-$6.02M |
| 5 |
Tudor Investment Corp
Stamford,
Connecticut
|
-$5.73M |
AAMI Hedge Fund Activity: Q4 2025 in Review
257 of the 8,224 institutional investors tracked by Wall St. Rank reported a position in Acadian Asset Management (AAMI) for Q4 2025, worth a combined $1.67B — down 1.1% from $1.68B a quarter earlier.
Buyers outnumbered sellers: 36 funds opened new AAMI positions and 25 closed out — a net gain of 11 holders — while 90 added to existing stakes and 100 trimmed.
The largest buyer was Woodline Partners, adding an estimated $22.5M. The largest seller was Amundi, exiting entirely with an estimated $11.4M sold.
- 257 institutional investors held Acadian Asset Management (AAMI) as of Q4 2025, up from 251 in Q3 2025.
- Funds reported $1.67B of Acadian Asset Management stock for Q4 2025, down 1.1% quarter-over-quarter.
- 36 funds opened new Acadian Asset Management positions in Q4 2025 and 25 closed out, a net change of +11 holders.
- The largest Acadian Asset Management buyer in Q4 2025 was Woodline Partners, an estimated $22.5M added.
- The largest Acadian Asset Management seller in Q4 2025 was Amundi, an estimated $11.4M sold.
Based on aggregated 13F filings for Q4 2025.