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AAMI

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.

New
Increased
Maintained
Reduced
Closed

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

Holders
257
Holders Change
+6
Holders Change %
+2.39%
% of All Funds
3.13%
Holding in Top 10
2
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-50%
% of All Funds
0.02%
New
36
Increased
90
Reduced
100
Closed
25
Calls
–
Puts
$5K
Net Calls
-$5K
Net Calls Change
-$5.08M

Top Buyers

Rank Fund Capital Flow
1
WP
Woodline Partners
California
+$22.5M
2
SG Americas Securities
SG Americas Securities
New York
+$15.5M
3
SFM
Soros Fund Management
New York
+$12.9M
4
Federated Hermes
Federated Hermes
Pennsylvania
+$9.94M
5
Jennison Associates
Jennison Associates
New York
+$8.27M

Top Sellers

Rank Fund Capital Flow
1
Amundi
Amundi
France
-$11.4M
2
Jane Street
Jane Street
New York
-$7.39M
3
ECP
Empyrean Capital Partners
California
-$6.29M
4
Deutsche Bank
Deutsche Bank
Germany
-$6.02M
5
Tudor Investment Corp
Tudor Investment Corp
Connecticut
-$5.73M
Name Holding Trade Value Shares
Change 		Change in
Stake
Northwestern Mutual Wealth Management
251
Northwestern Mutual Wealth Management
Wisconsin
$141 – – –
CIAM
252
Caitong International Asset Management
Hong Kong
$94 -$7.6K -165 -99%
GWM
253
Gilpin Wealth Management
Colorado
$94 +$92 +2 New
SIC
254
SJS Investment Consulting
Ohio
$94 +$92 +2 New
MCM
255
MAI Capital Management
Ohio
$47 +$46 +1 New
HNB
256
Huntington National Bank
Ohio
$12 – – –
Amundi
257
Amundi
France
– -$11.4M -252,410 Closed
Jane Street
258
Jane Street
New York
– -$7.39M -153,464 Closed
EI
259
EAM Investors
California
– -$4.7M -99,149 Closed
PCM
260
Prelude Capital Management
New York
– -$2.46M -51,179 Closed
IQI
261
Integrated Quantitative Investments
Washington
– -$1.21M -25,118 Closed
WG
262
Winton Group
United Kingdom
– -$1.21M -25,057 Closed
RRA
263
Round Rock Advisors
Connecticut
– -$1.08M -22,778 Closed
QC
264
Quadrature Capital
United Kingdom
– -$771K -16,012 Closed
WAM
265
Weiss Asset Management
Massachusetts
– -$481K -9,996 Closed
Connor, Clark & Lunn Investment Management (CC&L)
266
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
– -$463K -9,613 Closed
MF
267
Magnetar Financial
Illinois
– -$369K -7,659 Closed
FGP
268
Freestone Grove Partners
California
– -$368K -7,632 Closed
ET
269
Entropy Technologies
New York
– -$351K -7,298 Closed
NA
270
Navellier & Associates
Nevada
– -$310K -6,446 Closed
DS
271
DRW Securities
Illinois
– -$304K -6,259 Closed
AIM
272
Aigen Investment Management
New York
– -$267K -5,546 Closed
OSAM
273
O'Shaughnessy Asset Management
Connecticut
– -$255K -5,287 Closed
GCP
274
GSA Capital Partners
United Kingdom
– -$254K -5,278 Closed
RS
275
R Squared
Hong Kong
– -$228K -4,731 Closed
8 9 10
11
12

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.