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AAMI · Acadian Asset Management Inc. · Holdings

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$96.16 +1.99 (+2.11%) At close · Oct 5
S&P 600 member Russell 2000 member Rebalance outlook locked
Customer concentration — top 25 customers 33% of revenue

25 customers — 33% of revenue (As of December 31, 2025)

“our top 25 clients represented approximately 33% of run rate gross management fee revenue.”

5 customers — 14% of revenue (As of December 31, 2025)

“As of December 31, 2025, our top five client relationships represented approximately 14% of total run rate gross management fee revenue”
View the 10-K filed Feb 27, 2026
Market Cap
$3.33B
Shares
35.49M
Volume · Oct 5 475.4K Avg daily vol (3M) 426.22K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →
Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 304
Total Value: $2,579,127,351
Total Shares: 36,068,289
Showing 1–100 of 304 holdings by value · page 1 of 4

Institutional Ownership Trend

27 quarters

Superinvestors Holding AAMI

All superinvestors →
George Soros $43,644,936

Holder Concentration

Across 304 13F filers
Top Holder
16.2%
Sep 2023 → Jun 2026 · range 16.2% – 25.0%
of institutional value
Top 5
40.3%
Sep 2023 → Jun 2026 · range 40.3% – 57.0%
of institutional value
Top 10
54.6%
Sep 2023 → Jun 2026 · range 54.6% – 70.0%
of institutional value
HHI
550
Sep 2023 → Jun 2026 · range 550 – 998
Broadly held
Showing 100 of 304
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
PAULSON & CO. INC. $417,911,528 16.20% 5,843,282
BlackRock, Inc. $320,876,975 12.44% 4,486,535
JENNISON ASSOCIATES LLC $109,180,285 4.23% 1,526,570
Invesco Ltd. $98,449,493 3.82% 1,376,531
Empyrean Capital Partners, LP $93,548,160 3.63% 1,308,000
STATE STREET CORP $87,568,229 3.40% 1,224,388
VANGUARD CAPITAL MANAGEMENT LLC $84,144,066 3.26% 1,176,511
GEODE CAPITAL MANAGEMENT, LLC $69,354,660 2.69% 969,724
DIMENSIONAL FUND ADVISORS LP $65,202,422 2.53% 911,667
Woodline Partners LP $63,190,780 2.45% 883,540
VANGUARD PORTFOLIO MANAGEMENT LLC $58,170,935 2.26% 813,352
Driehaus Capital Management LLC $56,422,199 2.19% 788,901
Avantyr Capital Partners, LP $54,912,555 2.13% 767,793
MORGAN STANLEY $44,587,137 1.73% 623,422
SOROS FUND MANAGEMENT LLC $43,644,936 1.69% 610,248
Nuveen, LLC $43,082,073 1.67% 602,378
FEDERATED HERMES, INC. $41,095,177 1.59% 574,597
Allspring Global Investments Holdings, LLC $39,595,116 1.54% 553,623
TWO SIGMA INVESTMENTS, LP $37,472,117 1.45% 523,939
Azora Capital LP $35,474,277 1.38% 496,005
CHARLES SCHWAB INVESTMENT MANAGEMENT INC $28,847,019 1.12% 403,342
Systematic Alpha Investments, LLC $26,470,124 1.03% 370,108
GW&K Investment Management, LLC $26,386,231 1.02% 368,935
Impax Asset Management Group plc $25,032,000 0.97% 350,000
Amundi $22,694,368 0.88% 317,315
NORTHERN TRUST CORP $21,678,496 0.84% 303,111
Boston Trust Walden Corp $19,217,923 0.75% 268,707
AQR CAPITAL MANAGEMENT LLC $18,170,939 0.70% 254,068
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND $17,814,344 0.69% 249,082
GOLDMAN SACHS GROUP INC $17,491,501 0.68% 244,568
FMR LLC $16,535,708 0.64% 231,204
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC $14,861,569 0.58% 207,796
Bank of New York Mellon Corp $14,655,304 0.57% 204,912
PRINCIPAL FINANCIAL GROUP INC $14,088,580 0.55% 196,988
FIRST TRUST ADVISORS LP $13,939,176 0.54% 194,899
UBS Group AG $13,852,493 0.54% 193,687
VANGUARD FIDUCIARY TRUST CO $13,646,087 0.53% 190,801
Allianz Asset Management GmbH $12,195,446 0.47% 170,518
JACOBS LEVY EQUITY MANAGEMENT, INC $10,856,235 0.42% 151,793
Jupiter Topco LLC $10,838,569 0.42% 151,546
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $10,675,003 0.41% 149,259
BANK OF AMERICA CORP /DE/ $9,529,395 0.37% 133,241
JUPITER ASSET MANAGEMENT LTD $9,417,252 0.37% 131,673
Public Sector Pension Investment Board $9,361,753 0.36% 130,897
Universal- Beteiligungs- und Servicegesellschaft mbH $7,535,847 0.29% 105,367
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $7,402,603 0.29% 103,504
AMERICAN CENTURY COMPANIES INC $6,841,889 0.27% 95,664
Vident Advisory, LLC $6,635,195 0.26% 92,774
SG Americas Securities, LLC $6,551,017 0.25% 91,597
North Reef Capital Management LP $6,193,345 0.24% 86,596
Ghisallo Capital Management LLC $6,106,306 0.24% 85,379
Cannell & Spears LLC $6,031,281 0.23% 84,330
Walleye Capital LLC $5,906,479 0.23% 82,585
Informed Momentum Co LLC $5,894,964 0.23% 82,424
JPMORGAN CHASE & CO $5,819,724 0.23% 81,372
CREDIT AGRICOLE S A $5,721,600 0.22% 80,000
AMERIPRISE FINANCIAL INC $5,631,913 0.22% 78,746
LSV ASSET MANAGEMENT $5,600,016 0.22% 78,300
FRANKLIN RESOURCES INC $5,344,473 0.21% 74,727
ALGERT GLOBAL LLC $5,297,271 0.21% 74,067
ENVESTNET ASSET MANAGEMENT INC $5,051,028 0.20% 70,624
Legal & General Group Plc $4,864,217 0.19% 68,012
Linden Thomas Advisory Services, LLC $4,774,389 0.19% 66,756
RHUMBLINE ADVISERS $4,652,232 0.18% 65,048
VICTORY CAPITAL MANAGEMENT INC $4,567,410 0.18% 63,862
Trexquant Investment LP $4,482,086 0.17% 62,669
CITADEL ADVISORS LLC $4,429,948 0.17% 61,940
Qube Research & Technologies Ltd $3,992,961 0.15% 55,830
THORNBURG INVESTMENT MANAGEMENT INC $3,987,740 0.15% 55,757
Swiss National Bank $3,978,371 0.15% 55,626
Boston Partners $3,768,245 0.15% 52,688
MILLENNIUM MANAGEMENT LLC $3,710,815 0.14% 51,885
Rockefeller Capital Management L.P. $3,576,714 0.14% 50,010
CITIGROUP INC $3,135,365 0.12% 43,839
EFG International AG $2,908,288 0.11% 40,664
MACKENZIE FINANCIAL CORP $2,868,309 0.11% 40,105
PEAK6 LLC $2,860,800 0.11% 40,000
Creative Planning $2,859,584 0.11% 39,983
STATE OF WISCONSIN INVESTMENT BOARD $2,766,965 0.11% 38,688
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM $2,755,308 0.11% 38,525
CWA Asset Management Group, LLC $2,662,475 0.10% 37,227
SEI INVESTMENTS CO $2,601,038 0.10% 36,368
PDT Partners, LLC $2,588,809 0.10% 36,197
RAYMOND JAMES FINANCIAL INC $2,587,021 0.10% 36,172
NATIXIS ADVISORS, LLC $2,568,712 0.10% 35,916
ALLIANCEBERNSTEIN L.P. $2,566,638 0.10% 35,887
Redhawk Wealth Advisors, Inc. $2,523,297 0.10% 35,281
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM $2,466,081 0.10% 34,481
Engineers Gate Manager LP $2,432,109 0.09% 34,006
Kendall Capital Management $2,430,607 0.09% 33,985
D. E. Shaw & Co., Inc. $2,413,299 0.09% 33,743
Y-Intercept (Hong Kong) Ltd $2,326,188 0.09% 32,525
Aquatic Capital Management LLC $2,284,420 0.09% 31,941
RENAISSANCE TECHNOLOGIES LLC $2,263,679 0.09% 31,651
HUSSMAN STRATEGIC ADVISORS, INC. $2,252,880 0.09% 31,500
DEUTSCHE BANK AG\ $2,124,572 0.08% 29,706
BNP PARIBAS ARBITRAGE, SA $2,098,611 0.08% 29,343
Squarepoint Ops LLC $2,091,387 0.08% 29,242
Diametric Capital, LP $1,989,185 0.08% 27,813
PRUDENTIAL FINANCIAL INC $1,966,513 0.08% 27,496
Key facts CIK 1748824 CUSIP 10948W103 13F (30d) 8 filings 8 filers Visit website Investor relations