AAMI · Acadian Asset Management Inc. · Shareholders & Ownership
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”
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Every disclosed holder of AAMI in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns AAMI
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positionsNo chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 36,023,984 | 102.04% |
| Insiders (Forms 3, 4, 5) | 183,100 | 0.52% |
| 13D/G-only blocks | 0 | 0.00% |
| Remaining | 904,304 | -2.56% |
| Registered funds (N-PORT, not summed) | 14,165,680 | 40.13% |
Shares outstanding: 35,302,780, the issuer's latest cover-page count restated onto today's split basis.
Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of AAMI
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
PAULSON & CO. INC.
13F
CIK 1035674 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
5,843,282 | ||
| 1.1 |
|
5,843,282 | ||
| 2 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,486,535 | ||
| 2.1 |
iShares Core S&P Small-Cap ETF
Fund
S000004313 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
1,588,786 | ||
| 2.2 |
iShares Russell 2000 ETF
Fund
S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
727,052 | ||
| 2.3 |
iShares Russell 2000 Growth ETF
Fund
S000004343 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
261,448 | ||
| 2.4 |
iShares S&P Small-Cap 600 Growth ETF
Fund
S000004314 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
236,820 | ||
| 2.5 |
BlackRock Advantage Small Cap Core Fund
Fund
S000039982 · Registered fund · Aug 31, 2026
BlackRock Funds, not summed
|
108,007 | ||
| 3 |
JENNISON ASSOCIATES LLC
13F
CIK 53417 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,526,570 | ||
| 3.1 |
JENNISON ASSOCIATES LLC
13G
CIK 53417 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
1,526,570 | ||
| 4 |
Invesco Ltd.
13F
CIK 914208 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,376,531 | ||
| 4.1 |
Invesco Discovery Fund
Fund
S000064618 · Registered fund · Aug 31, 2026
AIM Counselor Series Trust (Invesco Counselor Series Trust), not summed
|
812,247 | ||
| 4.2 |
Invesco S&P SmallCap Momentum ETF
Fund
S000003024 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
|
352,439 | ||
| 4.3 |
Invesco Small Cap Growth Fund
Fund
S000000476 · Registered fund · Jun 30, 2026
AIM Growth Series (Invesco Growth Series), not summed
|
95,628 | ||
| 4.4 |
Invesco Dorsey Wright SmallCap Momentum ETF
Fund
S000037586 · Registered fund · Aug 31, 2026
Invesco Exchange-Traded Fund Trust II, not summed
|
53,088 | ||
| 4.5 |
Invesco RAFI US 1500 Small-Mid ETF
Fund
S000013120 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
|
34,376 | ||
| 5 |
Empyrean Capital Partners, LP
13F
CIK 1317195 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,308,000 | ||
| 6 |
|
1,224,388 | ||
| 6.1 |
State Street(R) SPDR(R) Portfolio S&P 600(TM) Small Cap ETF
Fund
S000041317 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
242,555 | ||
| 6.2 |
State Street(R) SPDR(R) S & P 600(TM) Small Cap Growth ETF
Fund
S000006990 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
147,894 | ||
| 6.3 |
State Street(R) SPDR(R) S&P(R) Capital Markets ETF
Fund
S000006978 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
88,217 | ||
| 6.4 |
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund
S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
9,473 | ||
| 6.5 |
State Street(R) SPDR(R) Portfolio S&P 1500(R) Composite Stock Market ETF
Fund
S000006973 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
5,698 | ||
| 7 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,176,511 | ||
| 8 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Sep 30, 2026
|
1,021,481 | ||
| 9 |
DIMENSIONAL FUND ADVISORS LP
13F
CIK 354204 · Registered investment adviser · Sep 30, 2026
|
915,790 | ||
| 9.1 |
U.S. SMALL CAP PORTFOLIO
Fund
S000000971 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
202,867 | ||
| 9.2 |
U.S. MICRO CAP PORTFOLIO
Fund
S000000948 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
146,922 | ||
| 9.3 |
Dimensional U.S. Small Cap ETF
Fund
S000070906 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
119,135 | ||
| 9.4 |
U.S. CORE EQUITY 2 PORTFOLIO
Fund
S000000980 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
71,701 | ||
| 9.5 |
U.S. CORE EQUITY 1 PORTFOLIO
Fund
S000000979 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
62,893 | ||
| 10 |
Woodline Partners LP
13F
CIK 1784547 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
883,540 | ||
| 11 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
847,261 | ||
| 12 |
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
813,352 | ||
| 13 |
Driehaus Capital Management LLC
13F
CIK 938206 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
788,901 | ||
| 13.1 |
Driehaus Small Cap Growth Fund
Fund
S000058261 · Registered fund · Jun 30, 2026
Driehaus Mutual Funds, not summed
|
166,707 | ||
| 14 |
Avantyr Capital Partners, LP
13F
CIK 2087378 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
767,793 | ||
| 15 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
623,422 | ||
| 15.1 |
E*TRADE No Fee Total Market Index Fund
Fund
S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
|
45 | ||
| 16 |
SOROS FUND MANAGEMENT LLC
13F
CIK 1029160 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
610,248 | ||
| 17 |
|
602,378 | ||
| 17.1 |
College Retirement Equities Fund - Total Global Stock Account
Fund
S000005080 · Registered fund · Jun 30, 2026
College Retirement Equities Fund, not summed
|
318,596 | ||
| 17.2 |
Nuveen Quant Small/Mid Cap Equity Fund
Fund
S000054623 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
178,689 | ||
| 17.3 |
Nuveen Small Cap Blend Index Fund
Fund
S000005367 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
37,418 | ||
| 17.4 |
Nuveen Equity Index Fund
Fund
S000005360 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
33,822 | ||
| 17.5 |
TIAA Separate Account VA-1 - Stock Index Account
Fund
S000005098 · Registered fund · Jun 30, 2026
TIAA Separate Account VA-1, not summed
|
540 | ||
| 18 |
FEDERATED HERMES, INC.
13F
CIK 1056288 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
574,597 | ||
| 19 |
PGIM Jennison Small Company Fund
Fund
S000004629 · Registered fund · Jun 30, 2026
Prudential Jennison Small Co Fund, Inc., not summed
|
573,245 | ||
| 20 |
TWO SIGMA INVESTMENTS, LP
13F
CIK 1179392 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
523,939 | ||
| 21 |
Allspring Global Investments Holdings, LLC
13F
CIK 1890906 · Holding company · Sep 30, 2026
|
511,775 | ||
| 21.1 |
Allspring SMID Core ETF
Fund
S000093515 · Registered fund · Jun 30, 2026
ALLSPRING EXCHANGE-TRADED FUNDS TRUST, not summed
|
33,502 | ||
| 21.2 |
Allspring Disciplined Small Cap Fund
Fund
S000007342 · Registered fund · Jun 30, 2026
ALLSPRING FUNDS TRUST, not summed
|
2,290 | ||
| 22 |
Azora Capital LP
13F
CIK 1700272 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
496,005 | ||
| 23 |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F
CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
403,342 | ||
| 23.1 |
Schwab U.S. Small-Cap ETF
Fund
S000026636 · Registered fund · Aug 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
125,449 | ||
| 23.2 |
Schwab Fundamental U.S. Small Company ETF
Fund
S000040878 · Registered fund · Aug 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
100,702 | ||
| 23.3 |
Schwab Small-Cap Index Fund
Fund
S000005912 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
68,930 | ||
| 23.4 |
Schwab Fundamental U.S. Small Company Index Fund
Fund
S000016767 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
26,282 | ||
| 23.5 |
Schwab Total Stock Market Index Fund
Fund
S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
17,475 | ||
| 24 |
Systematic Alpha Investments, LLC
13F
CIK 1806755 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
370,108 | ||
| 25 |
GW&K Investment Management, LLC
13F
CIK 1082917 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
368,935 | ||
| 26 |
Impax Asset Management Group plc
13F
CIK 1749768 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
350,000 | ||
| 27 |
Impax Small Cap Fund
Fund
S000021459 · Registered fund · Jun 30, 2026
IMPAX FUNDS SERIES TRUST I, not summed
|
350,000 | ||
| 28 |
Amundi
13F
CIK 1330387 · Holding company · Sep 30, 2026
|
339,923 | ||
| 29 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
303,111 | ||
| 29.1 |
Small Cap Index Fund
Fund
S000001245 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
14,320 | ||
| 29.2 |
Small Cap Core Fund
Fund
S000001244 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
3,244 | ||
| 29.3 |
FlexShares Morningstar US Market Factor Tilt Index Fund
Fund
S000033312 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
|
2,054 | ||
| 30 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
302,016 | ||
| 31 |
AQR CAPITAL MANAGEMENT LLC
13F
CIK 1167557 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
254,068 | ||
| 31.1 |
AQR Small Cap Multi-Style Fund
Fund
S000040064 · Registered fund · Jun 30, 2026
AQR Funds, not summed
|
12,916 | ||
| 31.2 |
AQR Small Cap Momentum Style Fund
Fund
S000025644 · Registered fund · Mar 31, 2026
AQR Funds, not summed
|
8,654 | ||
| 32 |
Boston Trust Walden Corp
13F
CIK 1534866 · Unknown · Sep 30, 2026
|
252,382 | ||
| 33 |
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
13F
CIK 1535845 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
249,082 | ||
| 34 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
244,568 | ||
| 34.1 |
Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF
Fund
S000048296 · Registered fund · Aug 31, 2026
Goldman Sachs ETF Trust, not summed
|
39,209 | ||
| 34.2 |
Goldman Sachs Absolute Return Tracker Fund
Fund
S000020314 · Registered fund · Aug 31, 2026
GOLDMAN SACHS TRUST, not summed
|
7,684 | ||
| 35 |
FMR LLC
13F
CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
231,204 | ||
| 35.1 |
Fidelity Small Cap Index Fund
Fund
S000033638 · Registered fund · Jul 31, 2026
Fidelity Salem Street Trust, not summed
|
308,601 | ||
| 35.2 |
Fidelity Enhanced Small Cap Core ETF
Fund
S000081807 · Registered fund · Jun 30, 2026
Fidelity Covington Trust, not summed
|
184,136 | ||
| 35.3 |
Fidelity Extended Market Index Fund
Fund
S000006021 · Registered fund · Aug 31, 2026
Fidelity Concord Street Trust, not summed
|
127,495 | ||
| 35.4 |
Strategic Advisers Fidelity U.S. Total Stock Fund
Fund
S000061481 · Registered fund · Aug 31, 2026
Fidelity Rutland Square Trust II, not summed
|
97,124 | ||
| 35.5 |
Strategic Advisers U.S. Total Stock Fund
Fund
S000084926 · Registered fund · Aug 31, 2026
Fidelity Rutland Square Trust II, not summed
|
88,427 | ||
| 36 |
Bank of New York Mellon Corp
13F
CIK 1390777 · Bank · Sep 30, 2026
|
213,977 | ||
| 37 |
Bridge Builder Small/Mid Cap Growth Fund
Fund
S000048336 · Registered fund · Jun 30, 2026
Bridge Builder Trust, not summed
|
207,252 | ||
| 38 |
FIRST TRUST ADVISORS LP
13F
CIK 1125816 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
194,899 | ||
| 38.1 |
First Trust Small Cap Growth AlphaDEX Fund
Fund
S000031806 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
122,697 | ||
| 38.2 |
First Trust Small Cap Core AlphaDEX Fund
Fund
S000017339 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
60,986 | ||
| 38.3 |
First Trust Multi Cap Growth AlphaDEX Fund
Fund
S000017343 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
11,114 | ||
| 38.4 |
First Trust Active Factor Small Cap ETF
Fund
S000066790 · Registered fund · Aug 31, 2026
First Trust Exchange-Traded Fund VIII, not summed
|
5,011 | ||
| 38.5 |
First Trust SMID Growth Strength ETF
Fund
S000058148 · Registered fund · Jun 30, 2026
First Trust Exchange-Traded Fund VI, not summed
|
4,123 | ||
| 39 |
|
193,687 | ||
| 40 |
VANGUARD TAX-MANAGED SMALL-CAP FUND
Fund
S000004387 · Registered fund · Jun 30, 2026
VANGUARD TAX-MANAGED FUNDS, not summed
|
192,766 | ||
| 41 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
190,801 | ||
| 42 |
Federated Hermes MDT Small Cap Core Fund
Fund
S000012972 · Registered fund · Jul 31, 2026
Federated Hermes MDT Series, not summed
|
176,234 | ||
| 43 |
Allianz Asset Management GmbH
13F
CIK 1535323 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
170,518 | ||
| 43.1 |
PIMCO RAE US Small Fund
Fund
S000048957 · Registered fund · Jun 30, 2026
PIMCO Equity Series, not summed
|
94,084 | ||
| 43.2 |
PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF
Fund
S000057225 · Registered fund · Jun 30, 2026
PIMCO Equity Series, not summed
|
578 | ||
| 44 |
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
13F
CIK 1644956 · Registered investment adviser · Sep 30, 2026
|
169,521 | ||
| 44.1 |
William Blair Small Cap Value Fund
Fund
S000008597 · Registered fund · Jun 30, 2026
WILLIAM BLAIR FUNDS, not summed
|
97,290 | ||
| 45 |
VANGUARD RUSSELL 2000 INDEX FUND
Fund
S000030003 · Registered fund · Aug 31, 2026
VANGUARD SCOTTSDALE FUNDS, not summed
|
162,282 | ||
| 46 |
PRINCIPAL FINANCIAL GROUP INC
13F
CIK 1126328 · Insurance company · Sep 30, 2026
|
152,301 | ||
| 46.1 |
Principal U.S. Small-Cap ETF
Fund
S000055159 · Registered fund · Jun 30, 2026
Principal Exchange-Traded Funds, not summed
|
57,643 | ||
| 46.2 |
SmallCap S&P 600 Index Fund
Fund
S000007203 · Registered fund · Jul 31, 2026
Principal Funds, Inc, not summed
|
19,425 | ||
| 46.3 |
SmallCap Growth Fund I
Fund
S000007175 · Registered fund · Jul 31, 2026
Principal Funds, Inc, not summed
|
2,444 | ||
| 47 |
JACOBS LEVY EQUITY MANAGEMENT, INC
13F
CIK 884414 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
151,793 | ||
| 48 |
Jupiter Topco LLC
13F
CIK 2146052 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
151,546 | ||
| 48.1 |
Janus Henderson Small/Mid Cap Growth Alpha ETF
Fund
S000052564 · Registered fund · Jul 31, 2026
Janus Detroit Street Trust, not summed
|
100,695 | ||
| 48.2 |
Janus Henderson Small Cap Growth Alpha ETF
Fund
S000052563 · Registered fund · Jul 31, 2026
Janus Detroit Street Trust, not summed
|
38,785 | ||
| 49 |
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
13F
CIK 1164508 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
149,259 | ||
| 50 |
Federated Hermes MDT Small Cap Growth Fund
Fund
S000012973 · Registered fund · Jul 31, 2026
Federated Hermes MDT Series, not summed
|
133,887 |
54 more nested rows are not shown here; Every filing lists them all.
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
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