Acadian Asset Management AAMI Institutional Ownership

NYSE AAMI

$92.56 +0.07 (+0.08%)

As of: Sep 30, 2026 · 2:47 PM EDT

Institutions by Trading Activity

301 Institutions

Increased 169 56.1%

Unchanged 38 12.6%

Reduced 94 31.2%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

101.99%

▲+1.28 pp QoQ

Shares Held by Institutions

36.33Mn

of 35.62Mn outstanding

▲+3.54% QoQ

Shares Outstanding

35.62Mn

-708.06K held outside 13F filers

Institutional Investors

301

filed 13F for Jun 2026

▲+45 vs prior quarter

Net Shares Added (QoQ)

+1.24Mn

accumulated since last quarter

Value of Holdings

$3.36Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Acadian Asset Management Inc. (NYSE:AAMI) has 301 institutional investors with active 13F positions as of June 2026.

Collectively, these holders controlled 102.0% of Acadian Asset Management's outstanding shares in June 2026, up from 100.7% in March 2026.
Their total shares held in AAMI increased 3.54% from the prior quarter, while the number of investors in Acadian Asset Management increased 38.71% year over year.
Activity in AAMI broke down as 169 buyers, 94 sellers, and 38 unchanged among 301 total holders.
The aggregate institutional position in Acadian Asset Management amounted to 36.33Mn shares as of June 2026, up by 1.24Mn shares quarter on quarter, and up 1.09Mn shares year over year.
As of June 30, 2026, PAULSON & CO. INC. held the largest stake in Acadian Asset Management with 5.84Mn shares, accounting for 16.4% of total shares outstanding.
Leading buyers of Acadian Asset Management shares for the quarter ending June 2026 were Invesco Ltd. (963.83K), DRIEHAUS CAPITAL MANAGEMENT LLC (788.9K), Avantyr Capital Partners, LP (767.79K), Sixth Street Partners Management Company, L.P. (403.34K), Amundi (317.32K).
The largest sales of AAMI for the quarter ending June 2026 came from PAULSON & CO. INC. (1.9Mn), SG Americas Securities, LLC (512.09K), JENNISON ASSOCIATES LLC (495.64K), Impax Asset Management Group plc (473.32K), JACOBS LEVY EQUITY MANAGEMENT, INC (166.34K).
Acadian Asset Management's 10 largest shareholders as of June 2026 include PAULSON & CO. INC. (5.84Mn), BlackRock, Inc. (4.49Mn), JENNISON ASSOCIATES LLC (1.53Mn), Invesco Ltd. (1.38Mn), Empyrean Capital Partners, LP (1.31Mn), State Street Corp (1.22Mn), VANGUARD CAPITAL MANAGEMENT LLC (1.18Mn), GEODE CAPITAL MANAGEMENT, LLC (969.72K), DIMENSIONAL FUND ADVISORS LP (911.67K), Woodline Partners LP (883.54K) per Business Quant data.

Form 13F Holdings

301 Institutional Holders

Report period 30 Jun, 2026

Total shares held 36.33Mn

Of outstanding 101.99%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	PAULSON & CO. INC.	0001035674	5,843,282	16.40%	▼1,900,000	-24.54%	$417.91Mn
2	BlackRock, Inc.	0002012383	4,486,535	12.59%	▼87,697	-1.92%	$320.88Mn
3	JENNISON ASSOCIATES LLC	0000053417	1,526,570	4.29%	▼495,637	-24.51%	$109.18Mn
4	Invesco Ltd.	0000914208	1,376,531	3.86%	▲963,829	+233.54%	$98.45Mn
5	Empyrean Capital Partners, LP	0001317195	1,308,000	3.67%	▼190	-0.01%	$93.55Mn
6	State Street Corp	0000093751	1,224,388	3.44%	▲14,948	+1.24%	$87.57Mn
7	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	1,176,511	3.30%	▲17,624	+1.52%	$84.14Mn
8	GEODE CAPITAL MANAGEMENT, LLC	0001214717	969,724	2.72%	▲221,902	+29.67%	$69.36Mn
9	DIMENSIONAL FUND ADVISORS LP	0000354204	911,667	2.56%	▲7,118	+0.79%	$65.20Mn
10	Woodline Partners LP	0001784547	883,540	2.48%	▲181,820	+25.91%	$63.19Mn
11	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	813,352	2.28%	▼70,557	-7.98%	$58.17Mn
12	DRIEHAUS CAPITAL MANAGEMENT LLC	0000938206	788,901	2.21%	▲788,901	0.00%	$56.42Mn
13	Avantyr Capital Partners, LP	0002087378	767,793	2.16%	▲767,793	0.00%	$54.91Mn
14	Morgan Stanley	0000895421	623,422	1.75%	▲85,779	+15.95%	$44.59Mn
15	SOROS FUND MANAGEMENT LLC	0001029160	610,248	1.71%	▼38,559	-5.94%	$43.64Mn
16	Nuveen, LLC	0001871926	602,378	1.69%	▲13,914	+2.36%	$43.08Mn
17	Federated Hermes, Inc.	0001056288	574,597	1.61%	▲6,277	+1.10%	$41.10Mn
18	Allspring Global Investments Holdings, LLC	0001890906	553,623	1.55%	▲134,384	+32.05%	$39.85Mn
19	TWO SIGMA INVESTMENTS, LP	0001179392	523,939	1.47%	▲45,125	+9.42%	$37.47Mn
20	Azora Capital LP	0001700272	496,005	1.39%	▲166,656	+50.60%	$35.47Mn

Showing 1 to 20 of 301 holders