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AAMI

Acadian Asset Management
AAMI

257 hedge funds and large institutions have $1.96B invested in Acadian Asset Management in 2026 Q1 according to their latest regulatory filings, with 38 funds opening new positions, 89 increasing their positions, 88 reducing their positions, and 34 closing their positions.

New
Increased
Maintained
Reduced
Closed

50% more funds holding in top 10

Funds holding in top 10: 2 → 3 (+1)

17% more capital invested

Capital invested by funds: $1.67B → $1.96B (+$290M)

12% more first-time investments, than exits

New positions opened: 38 | Existing positions closed: 34

1.37% more ownership

Funds ownership: 99.26% → 100.64% (+1.4%)

1% more repeat investments, than reductions

Existing positions increased: 89 | Existing positions reduced: 88

0% more funds holding

Funds holding: 257 → 257 (0)

100% less call options, than puts

Call options by funds: $0 | Put options by funds: $201K

Holders
257
Holders Change
–
Holders Change %
0%
% of All Funds
3.16%
Holding in Top 10
3
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+50%
% of All Funds
0.04%
New
38
Increased
89
Reduced
88
Closed
34
Calls
–
Puts
$201K
Net Calls
-$201K
Net Calls Change
-$196K

Top Buyers

1
ACL
Azora Capital LP
Florida
+$17.3M
2
BTW
Boston Trust Walden
Massachusetts
+$14.8M
3
SG Americas Securities
SG Americas Securities
New York
+$12.9M
4
Two Sigma Investments
Two Sigma Investments
New York
+$10.3M
5
Janus Henderson Group
Janus Henderson Group
United Kingdom
+$9.63M

Top Sellers

1
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
-$14.4M
2
NRCM
North Reef Capital Management
California
-$11.8M
3
Jacobs Levy Equity Management
Jacobs Levy Equity Management
New Jersey
-$5.33M
4
ECP
Empyrean Capital Partners
California
-$5.07M
5
Tudor Investment Corp
Tudor Investment Corp
Connecticut
-$4.75M
Name Holding Trade Value Shares
Change 		Change in
Stake
Northern Trust
26
Northern Trust
Illinois
$15.2M +$4K +76 +0%
William Blair Investment Management
27
William Blair Investment Management
Illinois
$14.4M +$456K +8,651 +3%
Arrowstreet Capital
28
Arrowstreet Capital
Massachusetts
$13.1M -$14.4M -273,263 -53%
NRCM
29
North Reef Capital Management
California
$12M -$11.8M -223,683 -50%
Goldman Sachs
30
Goldman Sachs
New York
$11.9M +$537K +10,196 +5%
UBS Group
31
UBS Group
Switzerland
$11.8M +$6.41M +121,742 +128%
Fidelity Investments
32
Fidelity Investments
Massachusetts
$11.6M +$1.8M +34,124 +19%
Principal Financial Group
33
Principal Financial Group
Iowa
$11.1M +$1.31M +24,885 +14%
Bank of New York Mellon
34
Bank of New York Mellon
New York
$10.7M -$323K -6,143 -3%
Janus Henderson Group
35
Janus Henderson Group
United Kingdom
$10.6M +$9.63M +182,904 +1,471%
First Trust Advisors
36
First Trust Advisors
Illinois
$10.6M +$1.31M +24,855 +15%
VFT
37
Vanguard Fiduciary Trust
Pennsylvania
$10.1M +$9.73M +184,875 New
Allianz Asset Management
38
Allianz Asset Management
Germany
$9.87M +$3.92M +74,395 +70%
Qube Research & Technologies (QRT)
39
Qube Research & Technologies (QRT)
United Kingdom
$9.52M +$169K +3,211 +2%
AQR Capital Management
40
AQR Capital Management
Connecticut
$8.69M +$3.54M +67,230 +73%
Public Sector Pension Investment Board (PSP Investments)
41
Public Sector Pension Investment Board (PSP Investments)
Quebec, Canada
$8.02M +$1.28M +24,304 +20%
Bank of America
42
Bank of America
North Carolina
$7.47M +$1.94M +36,912 +37%
JAM
43
Jupiter Asset Management
United Kingdom
$7.17M +$1.15M +21,877 +20%
Deutsche Bank
44
Deutsche Bank
Germany
$6.52M +$5.09M +96,725 +420%
Man Group
45
Man Group
United Kingdom
$6.43M -$1.07M -20,399 -15%
BCM
46
Brightlight Capital Management
Connecticut
$5.45M -$405K -7,700 -7%
AG
47
Algert Global
California
$5.26M -$964K -18,300 -16%
JP Morgan Chase
48
JP Morgan Chase
New York
$5.1M -$2.79M -52,982 -35%
KK
49
Karl Kapital
California
$4.9M +$4.74M +90,048 New
CS
50
Cannell & Spears
New York
$4.6M +$1.33M +25,262 +43%
1
2
3 4 5

AAMI Hedge Fund Activity: Q1 2026 in Review

257 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Acadian Asset Management (AAMI) for Q1 2026, worth a combined $1.96B — up 17% from $1.67B a quarter earlier.

Buyers outnumbered sellers: 38 funds opened new AAMI positions and 34 closed out — a net gain of 4 holders — while 89 added to existing stakes and 88 trimmed.

The largest buyer was Azora Capital LP, opening a new position worth an estimated $17.3M. The largest seller was Arrowstreet Capital, cutting an estimated $14.4M.

  • 257 institutional investors held Acadian Asset Management (AAMI) as of Q1 2026, unchanged from Q4 2025.
  • Funds reported $1.96B of Acadian Asset Management stock for Q1 2026, up 17% quarter-over-quarter.
  • 38 funds opened new Acadian Asset Management positions in Q1 2026 and 34 closed out, a net change of +4 holders.
  • The largest Acadian Asset Management buyer in Q1 2026 was Azora Capital LP, an estimated $17.3M added.
  • The largest Acadian Asset Management seller in Q1 2026 was Arrowstreet Capital, an estimated $14.4M sold.

Based on aggregated 13F filings for Q1 2026.