13F Insight
DOSSIER · 13F Holders · Q1 2026High-convictionMulti-bagger
AAMI

Acadian Asset Management Inc

266 institutions still hold Acadian Asset Management Inc as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 10948w103·266 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 9.7%
vs prior quarter
13F value held
$1.4B
51.0% inst. owned
of float
Holders
266
-67 QoQ
filers reporting
Activity
+8 / −85
+929 added · −915 reduced
this quarter
Concentration
29.56%
PAULSON & CO. INC. #1
top holder share
AI Holders Summary · Q1 2026

266 institutions reported AAMI in Q1 2026. PAULSON & CO. INC. leads at 29.6% of the visible book. -67 net institutions QoQ — distribution reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
PAULSON & CO. INC.
CIK 0001035674
$421M7.7M13.54%Q1 202602
BlackRock, Inc.
CIK 0002012383
$249M4.6M0.00%Q1 202603
JENNISON ASSOCIATES LLC
CIK 0000053417
$90M1.9M0.05%Q4 202504
Empyrean Capital Partners, LP
CIK 0001317195
$71M1.3M2.32%Q1 202605
STATE STREET CORP
CIK 0000093751
$66M1.2M0.00%Q1 202606
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$63M1.2M0.00%Q1 202607
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$49M905K0.01%Q1 202608
Vanguard Portfolio Management
CIK 0002100121
$48M884K0.00%Q1 202609
Impax Asset Management Group plc
CIK 0001749768
$45M823K0.31%Q1 202610
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$41M748K0.00%Q1 202611
Woodline Partners LP
CIK 0001784547
$38M702K0.14%Q1 202612
SOROS FUND MANAGEMENT LLC
CIK 0001029160
$35M649K0.39%Q1 202613
Nuveen, LLC
CIK 0001871926
$32M588K0.01%Q1 202614
FEDERATED HERMES, INC.
CIK 0001056288
$31M568K0.05%Q1 202615
MORGAN STANLEY
CIK 0000895421
$29M538K0.00%Q1 202616
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$26M479K0.02%Q1 202617
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$25M453K0.00%Q1 202618
Allspring Global Investments Holdings, LLC
CIK 0001890906
$24M419K0.04%Q1 202619
Invesco Ltd.
CIK 0000914208
$22M413K0.00%Q1 202620
Systematic Alpha Investments, LLC
CIK 0001806755
$20M370K0.71%Q1 2026
Page 1 of 14
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