Acadian Asset ManagementAAMI

13F holders, Q1 2026 (March 31)
256holders
32new positions
32sold out
7famous investors
$54.43avg. 13F price*

At the end of Q1 2026, 256 institutions reported holding Acadian Asset Management Inc. (AAMI) in their 13F filings, unchanged from Q4 2025. 32 opened new positions and 32 sold out. The largest holders were Paulson & Co. ($421.4M), BlackRock, Inc. ($248.9M) and Jennison Associates LLC ($110.0M). 7 famous investors held it, including John Paulson (13.5% of Paulson & Co.'s portfolio), George Soros (0.7% of Soros Fund Management's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).

Company
Acadian Asset Management Inc.
CUSIP
10948W103
Latest filing quarter
Q2 2026

History

Number of 13F holders

0100200300400 Q1 2024: 168Q1 2024Q2 2024: 164Q2 2024Q3 2024: 172Q3 2024Q4 2024: 178Q4 2024Q1 2025: 191Q1 2025Q2 2025: 218Q2 2025Q3 2025: 250Q3 2025Q4 2025: 256Q4 2025Q1 2026: 256Q1 2026Q2 2026: 302Q2 2026

Total Exit/New Position Q4 2025 → Q1 2026

InstitutionsTotal Value
New Positions32$58.8M
Exits32$18.9M

All 13F filers, Q4 2025 → Q1 2026: 2,980,909 shares bought and 1,997,371 shares sold, net +983,538 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.

Ownership 256 holders

Paulson & Co. 13.54% No change 7,743,282 $421.4M
BlackRock, Inc. 0.00% Reduce -1.7% 4,574,232 $248.9M
Jennison Associates LLC 0.08% Add +5.9% 2,022,207 $110.0M
Empyrean Capital Partners, LP 2.53% Reduce -6.9% 1,308,190 $71.2M
State Street Corp. 0.00% Add +0.3% 1,209,440 $65.8M
Vanguard Capital Management LLC 0.00% — 1,158,887 $63.1M
Dimensional Fund Advisors LP 0.01% Reduce -0.5% 904,549 $49.2M
Vanguard Portfolio Management LLC 0.00% — 883,909 $48.1M
Impax Asset Management Group plc 0.31% Reduce -2.6% 823,323 $44.8M
Geode Capital Management, LLC 0.00% Add +9.1% 747,822 $40.7M
Woodline Partners LP 0.14% Add +25.5% 701,720 $38.2M
Soros Fund Management 0.65% Reduce -12.0% 648,807 $35.3M
SG Americas Securities, LLC 0.04% Add +67.9% 603,683 $32.9M
Nuveen, LLC 0.01% Reduce -9.8% 588,464 $32.0M
Federated Hermes, Inc. 0.05% Add +1.8% 568,320 $30.9M
Morgan Stanley 0.00% Add +1.0% 537,643 $29.3M
Two Sigma Investments, LP 0.02% Add +68.9% 478,814 $26.1M
Charles Schwab Investment Management Inc. 0.00% Reduce -5.6% 453,320 $24.7M
Allspring Global Investments Holdings, LLC 0.04% Add +13.9% 419,239 $23.6M
Invesco Ltd. 0.00% Reduce -1.9% 412,702 $22.5M
GW&K Investment Management, LLC 0.18% Reduce -9.0% 375,977 $20.5M
Systematic Alpha Investments, LLC 0.71% No change 370,108 $20.1M
Azora Capital LP 1.18% New 329,349 $17.9M
Jacobs Levy Equity Management, Inc. 0.07% Reduce -24.1% 318,131 $17.3M
Boston Trust Walden Corp 0.13% New 281,604 $15.3M
Northern Trust Corp. 0.00% Add +0.0% 279,061 $15.2M
William Blair Investment Management, LLC 0.05% Add +3.4% 263,737 $14.4M
Arrowstreet Capital, Limited Partnership 0.01% Reduce -53.1% 241,200 $13.1M
North Reef Capital Management LP 0.41% Reduce -50.4% 220,239 $12.0M
Goldman Sachs Group Inc. 0.00% Add +4.9% 219,292 $11.9M
UBS Group AG 0.00% Add +128.1% 216,817 $11.8M
FMR LLC 0.00% Add +19.1% 213,004 $11.6M
Principal Financial Group Inc. 0.01% Add +13.8% 204,527 $11.1M
Bank of New York Mellon Corp 0.00% Reduce -3.0% 196,225 $10.7M
Janus Henderson Group PLC 0.01% Add +1471.1% 195,337 $10.6M
First Trust Advisors LP 0.01% Add +14.7% 194,170 $10.6M
Vanguard Fiduciary Trust Co. 0.00% — 184,875 $10.1M
Allianz Asset Management GmbH 0.01% Add +69.5% 181,393 $9.9M
Qube Research & Technologies Ltd 0.01% Add +1.9% 174,938 $9.5M
AQR Capital Management 0.00% Add +72.7% 159,669 $8.7M
Public Sector Pension Investment Board 0.03% Add +19.8% 147,353 $8.0M
Bank of America Corp. 0.00% Add +36.8% 137,218 $7.5M
Jupiter Asset Management Ltd. 0.04% Add +19.9% 131,673 $7.2M
Deutsche Bank AG 0.00% Add +420.3% 119,736 $6.5M
Man Group plc 0.01% Reduce -14.7% 118,071 $6.4M
Brightlight Capital Management LP 5.38% Reduce -7.1% 100,200 $5.5M
Algert Global LLC 0.08% Reduce -15.9% 96,687 $5.3M
JPMorgan Chase & Co. 0.00% Reduce -35.2% 97,620 $5.1M
Karl Kapital LLC 3.39% New 90,048 $4.9M
Cannell & Spears LLC 0.09% Add +42.7% 84,459 $4.6M
LSV Asset Management 0.01% No change 82,300 $4.5M
Ameriprise Financial Inc. 0.00% Add +2.1% 81,107 $4.4M
Citadel Advisors 0.00% Reduce -20.9% 81,023 $4.4M
American Century Companies Inc. 0.00% Add +4.5% 80,776 $4.4M
Vident Advisory, LLC 0.04% Add +1331.2% 78,642 $4.3M
Rhumbline Advisers 0.00% Reduce -3.7% 72,136 $3.9M
Millennium Management 0.00% Reduce -22.0% 69,334 $3.8M
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% Add +1.2% 67,421 $3.7M
Legal & General Group Plc 0.00% Reduce -9.2% 64,288 $3.5M
Victory Capital Management Inc. 0.00% Reduce -8.5% 63,557 $3.5M
Envestnet Asset Management Inc. 0.00% Add +10.8% 62,788 $3.4M
Kestrel Investment Management Corp. 2.03% Reduce -1.3% 62,381 $3.4M
Renaissance Technologies 0.01% Reduce -38.4% 60,544 $3.3M
Linden Thomas Advisory Services, LLC 0.31% Add +97.7% 59,448 $3.2M
Credit Agricole S A 0.01% No change 58,389 $3.2M
Boston Partners 0.00% Add +4.4% 57,533 $3.1M
Swiss National Bank 0.00% No change 56,526 $3.1M
D. E. Shaw & Co. 0.00% Reduce -51.0% 56,410 $3.1M
Franklin Resources Inc. 0.00% Add +26.2% 54,244 $3.0M
Engineers Gate Manager LP 0.04% Add +5.3% 52,696 $2.9M
Zacks Investment Management 0.02% Add +31.2% 50,853 $2.8M
Assenagon Asset Management S.A. 0.00% New 45,836 $2.5M
Hussman Strategic Advisors, Inc. 0.49% New 42,000 $2.3M
EFG International AG 0.05% New 41,435 $2.3M
State Board of Administration of Florida Retirement System 0.00% Add +77.4% 40,459 $2.2M
Redhawk Wealth Advisors, Inc. 0.24% New 40,092 $2.2M
Intech Investment Management LLC 0.02% Add +216.3% 39,108 $2.1M
State of Wisconsin Investment Board 0.00% Reduce -13.9% 35,418 $1.9M
Susquehanna Portfolio Strategies, LLC 0.03% No change 35,357 $1.9M
Kendall Capital Management 0.38% Add +6.8% 34,460 $1.9M
BNP Paribas Financial Markets 0.00% Reduce -18.9% 34,194 $1.9M
CWA Asset Management Group, LLC 0.06% New 33,388 $1.8M
Alliancebernstein L.P. 0.00% No change 38,087 $1.8M
Royce & Associates LP 0.02% Reduce -18.0% 32,218 $1.8M
Jane Street Group, LLC 0.00% New 31,897 $1.7M
Dark Forest Capital Management LP 0.15% Reduce -18.1% 30,948 $1.7M
Creative Planning 0.00% Add +22.7% 30,467 $1.7M
DGS Capital Management, LLC 0.26% Add +0.3% 29,489 $1.6M
Thornburg Investment Management Inc. 0.02% New 27,786 $1.5M
Universal- Beteiligungs- und Servicegesellschaft mbH 0.00% Reduce -2.8% 27,191 $1.5M
Teacher Retirement System of Texas 0.01% Reduce -56.5% 27,166 $1.5M
California State Teachers Retirement System 0.00% Reduce -0.7% 27,070 $1.5M
Prudential Financial Inc. 0.00% Reduce -17.5% 27,036 $1.5M
Sei Investments Co. 0.00% Add +58.5% 26,930 $1.5M
Russell Investments Group, Ltd. 0.00% Reduce -16.3% 26,901 $1.5M
HRT Financial LP 0.00% Reduce -20.1% 25,892 $1.4M
State of Tennessee, Department of Treasury 0.00% Add +309.1% 24,827 $1.4M
CANADA LIFE ASSURANCE Co 0.00% No change 24,069 $1.3M
LPL Financial LLC 0.00% Reduce -6.8% 23,373 $1.3M
Voleon Capital Management LP 0.03% Reduce -45.6% 23,036 $1.3M
Y-Intercept (Hong Kong) Ltd 0.02% Add +70.5% 22,931 $1.2M
Natixis Advisors, LLC 0.00% Add +89.0% 22,843 $1.2M
Quantinno Capital Management LP 0.00% Add +18.2% 22,582 $1.2M
Healthcare of Ontario Pension Plan Trust Fund 0.00% Reduce -63.1% 21,300 $1.2M
T. Rowe Price Associates Inc. 0.00% Add +27.7% 20,005 $1.1M
Walleye Capital LLC 0.01% New 19,590 $1.1M
State of Alaska, Department of Revenue 0.01% Reduce -1.7% 18,565 $1.0M
Greenwich Wealth Management LLC 0.04% No change 18,500 $1.0M
VANGUARD ASSET MANAGEMENT, Ltd 0.00% — 18,373 $1000K
Barclays PLC 0.00% Reduce -67.4% 18,099 $985K
Harvest Investment Services, LLC 0.18% New 18,088 $984K
Summit Global Investments 0.06% Reduce -17.2% 17,657 $961K
Thrivent Financial for Lutherans 0.00% Reduce -2.9% 17,638 $960K
Trexquant Investment LP 0.01% Add +82.0% 17,302 $942K
MML Investors Services, LLC 0.00% Reduce -16.5% 16,245 $884K
Citigroup Inc. 0.00% Reduce -63.8% 15,530 $845K
Concurrent Investment Advisors, LLC 0.01% Reduce -30.9% 15,386 $837K
MetLife Investment Management, LLC 0.00% Reduce -0.7% 15,072 $820K
STRS Ohio 0.00% Reduce -5.7% 14,800 $805K
KLP Kapitalforvaltning As 0.00% Add +19.0% 14,432 $785K
Illinois Municipal Retirement Fund 0.01% Add +6.8% 14,319 $779K
PDT Partners, LLC 0.04% Add +101.5% 13,697 $745K
Mariner, LLC 0.00% Add +58.8% 13,488 $734K
Horizon Investments, LLC 0.01% Add +3.8% 13,481 $734K
Manufacturers Life Insurance Company, The 0.00% Add +6.0% 12,937 $704K
CreativeOne Wealth, LLC 0.02% New 12,895 $702K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% Add +1.0% 12,583 $685K
Susquehanna International Group, LLP 0.00% Add +35.8% 12,508 $681K
Jones Financial Companies LLLP 0.00% Add +16366.2% 12,679 $662K
HSBC Holdings PLC 0.00% Reduce -5.4% 12,236 $659K
Lido Advisors, LLC 0.00% Add +33.4% 11,904 $648K
Keybank National Association 0.00% Reduce -4.9% 11,838 $644K
Louisiana State Employees Retirement System 0.01% Reduce -3.3% 11,700 $637K
Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% Add +6.8% 11,360 $618K
First Citizens Bank & Trust Co. 0.01% Reduce -4.2% 10,682 $581K
Wells Fargo & Company 0.00% Reduce -63.9% 10,645 $579K
State of Wyoming 0.07% Add +12.0% 10,389 $565K
Vanguard Global Advisers, LLC 0.00% — 10,380 $565K
Envestnet Portfolio Solutions, Inc. 0.00% Reduce -4.3% 10,266 $559K
New York State Teachers Retirement System 0.00% Reduce -7.8% 9,939 $541K
Bokf, NA 0.01% Reduce -35.9% 8,874 $483K
Voya Investment Management LLC 0.00% Add +71.8% 8,705 $474K
Anb Bank 0.19% Add +5.0% 8,588 $467K
New York State Common Retirement Fund 0.00% No change 8,475 $461K
Aquatic Capital Management LLC 0.01% New 8,347 $454K
Advisory Services Network, LLC 0.01% Reduce -2.2% 8,189 $446K
Optimist Retirement Group LLC 0.19% Reduce -12.2% 8,054 $438K
BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.00% Reduce -7.7% 7,925 $431K
Arizona State Retirement System 0.00% Reduce -1.2% 7,846 $427K
Truist Financial Corp. 0.00% Add +21.3% 7,801 $425K
Gsa Capital Partners LLP 0.03% New 7,635 $415K
Amalgamated Bank 0.00% Reduce -1.1% 7,621 $415K
Raymond James Financial Inc. 0.00% New 7,388 $402K
Brevan Howard Capital Management LP 0.00% Reduce -26.1% 7,247 $394K
Tidal Investments LLC 0.00% New 7,053 $384K
Yousif Capital Management, LLC 0.00% Reduce -1.5% 7,037 $383K
Police & Firemen's Retirement System of New Jersey 0.00% No change 6,980 $380K
Flagship Harbor Advisors, LLC 0.02% Add +98042.9% 6,870 $374K
Ieq Capital, LLC 0.00% New 6,839 $372K
Mangrove Partners Im, LLC 0.03% Reduce -22.3% 6,832 $372K
Teachers Retirement System of the State of Kentucky 0.00% Reduce -2.9% 6,659 $363K
Commonwealth of Pennsylvania Public School Empls Retrmt SYS 0.00% Reduce -0.1% 6,535 $356K
Abacus Wealth Partners, LLC 0.03% No change 6,499 $354K
Morningstar Investment Management LLC 0.02% New 6,188 $337K
Vanguard Investments Australia, Ltd. 0.00% — 6,127 $333K
Oregon Public Employees Retirement Fund 0.00% No change 6,086 $331K
Cerity Partners LLC 0.00% Add +3.9% 5,978 $325K
Neuberger Berman Group LLC 0.00% Reduce -0.6% 5,712 $311K
Institute for Wealth Management, LLC. 0.03% Reduce -10.2% 5,543 $302K
JMN Financial LLC 0.29% Reduce -3.8% 5,470 $298K
Pathstone Holdings, LLC 0.00% New 5,230 $285K
EJF Capital LP 0.20% No change 5,143 $280K
Bank of Montreal 0.00% Reduce -38.5% 4,988 $271K
XTX Topco Ltd 0.00% Reduce -76.2% 4,921 $268K
Cwm, LLC 0.00% Add +20.1% 4,899 $267K
Mercer Global Advisors Inc. 0.00% New 4,718 $257K
Swiss Life Asset Management Ltd 0.00% Reduce -2.1% 4,634 $252K
Evergreen Capital Management LLC 0.01% No change 4,509 $245K
Exchange Traded Concepts, LLC 0.00% Reduce -14.6% 4,495 $245K
Cetera Investment Advisers 0.00% New 4,433 $241K
Pictet Asset Management Holding SA 0.00% No change 4,343 $236K
ProShare Advisors LLC 0.00% Reduce -19.9% 4,172 $227K
Panagora Asset Management Inc. 0.00% Reduce -82.7% 4,048 $220K
Marshall Wace, LLP 0.00% New 3,998 $218K
Maryland State Retirement & Pension System 0.00% New 3,810 $207K
Ensign Peak Advisors, Inc 0.00% No change 3,059 $166K
PNC Financial Services Group, Inc. 0.00% Add +12.5% 3,009 $164K
Tower Research Capital LLC (TRC) 0.00% Add +595.6% 2,664 $145K
Ameritas Investment Partners, Inc. 0.00% No change 2,243 $122K
Transamerica Financial Advisors, LLC 0.01% Add +151.6% 2,018 $110K
WealthCollab, LLC 0.04% No change 1,848 $101K
Quadrant Capital Group LLC 0.00% Add +13.5% 1,517 $83K
Royal Bank of Canada 0.00% Reduce -31.8% 1,412 $76K
Quantbot Technologies LP 0.00% Reduce -84.2% 1,251 $68K
GAMMA Investing LLC 0.00% Add +4.3% 1,182 $64K
Signature Equity Partners, LLC 0.03% Reduce -10.1% 945 $51K
EverSource Wealth Advisors, LLC 0.00% Reduce -0.3% 767 $42K
Osaic Holdings, Inc. 0.00% Add +163.3% 761 $41K
Signaturefd, LLC 0.00% Add +4.3% 747 $41K
Public Employees Retirement System of Ohio 0.00% Reduce -16.5% 647 $35K
US Bancorp \de 0.00% Add +2.0% 646 $35K
Pinnacle Wealth Planning Services, Inc. 0.00% Add +5.1% 600 $33K
Cullen/Frost Bankers, Inc. 0.00% Add +4.4% 599 $33K
Blue Trust, Inc. 0.00% Add +22.6% 554 $30K
Smartleaf Asset Management LLC 0.00% Reduce -31.2% 553 $29K
MAI Capital Management 0.00% Add +46600.0% 467 $25K
Rockefeller Capital Management L.P. 0.00% Add +244.4% 458 $25K
Fifth Third Bancorp 0.00% Add +20.1% 436 $24K
Allworth Financial LP 0.00% Add +64.9% 432 $24K
Farther Finance Advisors, LLC 0.00% Add +12.6% 403 $23K
Arax Advisory Partners 0.00% Add +606.7% 318 $21K
Nisa Investment Advisors, LLC 0.00% Add +13.5% 327 $18K
Bessemer Group Inc. 0.00% No change 276 $16K
Larson Financial Group LLC 0.00% No change 212 $12K
Salomon & Ludwin, LLC 0.00% No change 203 $11K
Group One Trading LLC 0.00% Reduce -71.2% 182 $10K
Sterling Capital Management LLC 0.00% Reduce -2.3% 174 $9K
UMB Bank, n.a. 0.00% Add +2.9% 142 $8K
Rothschild Investment LLC 0.00% Add +43.8% 138 $8K
Essential Partners LLC 0.00% No change 124 $7K
Versant Capital Management, Inc 0.00% No change 110 $6K
IFP Advisors, Inc 0.00% Reduce -1.0% 97 $5K
Parallel Advisors, LLC 0.00% Add +65.5% 96 $5K
Evolution Wealth Management Inc. 0.00% No change 92 $5K
Los Angeles Capital Management LLC 0.00% Reduce -98.5% 92 $5K
Hantz Financial Services, Inc. 0.00% Add +102.1% 95 $5K
MassMutual Private Wealth & Trust, FSB 0.00% No change 89 $5K
Parkside Financial Bank & Trust 0.00% No change 81 $4K
Altshuler Shaham Ltd 0.00% Reduce -14.3% 78 $4K
Root Financial Partners, LLC 0.00% New 77 $4K
Sound Income Strategies, LLC 0.00% No change 63 $4K
Private Wealth Management Group, LLC 0.00% No change 60 $3K
Colonial Trust Co / SC 0.00% Reduce -28.1% 59 $3K
Basecamp Wealth Advisors LLC 0.00% New 49 $3K
Keystone Financial Group, Inc. 0.00% No change 45 $2K
First Horizon Corp. 0.00% No change 45 $2K
Twin Peaks Wealth Advisors, LLC 0.00% New 41 $2K
Harvest Fund Management Co., Ltd 0.00% No change 37 $2K
Rossby Financial, LCC 0.00% Add +220.0% 32 $2K
Zions Bancorporation, National Association 0.00% New 32 $2K
Cornerstone Planning Group LLC 0.00% No change 22 $2K
Keating Financial Advisory Services, Inc. 0.00% New 21 $1K
Farmers & Merchants Investments Inc. 0.00% Reduce -9.5% 19 $1K
Cornerstone Financial Management LLC 0.00% No change 16 $871
Ankerstar Wealth, LLC 0.00% No change 13 $707
Annis Gardner Whiting Capital Advisors, LLC 0.00% No change 10 $545
Assetmark, Inc. 0.00% New 9 $490
True Wealth Design, LLC 0.00% No change 8 $436
Gilpin Wealth Management, LLC 0.00% Add +150.0% 5 $273
JPL Wealth Management, LLC 0.00% New 5 $273
Abound Wealth Management 0.00% No change 4 $218
SBI Securities Co., Ltd. 0.00% No change 3 $163
SJS Investment Consulting Inc. 0.00% No change 2 $109
GHP Investment Advisors, Inc. 0.00% New 1 $55
Avion Wealth 0.00% No change 13 $0
Covestor Ltd 0.00% Reduce -53.9% 6 $0

"% of holder's portfolio" is AAMI's weight in each manager's 13F, not the share of Acadian Asset Management Inc. the manager owns.