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Acadian Asset Management AAMI

US equityMarket cap rank #2390
$96.16 +$1.99 (+2.11%)
Market closed · Oct 5, 10:20 pm ET · Last extended-hours $96.16 0.00%
Open$94.40
Prev close$94.17
Day range$93.71 – $97.39
Volume475.4K
Market cap$3.41B
P/E (TTM)34.0
Dividend yield0.23%

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership104.0%+0.15 pts vs. prior quarter
Institutions holding361+1 vs. prior quarter
Insider trades (recent)32 buys / 18 sellsNet buying
Short interest3.02% of floatDays to cover 2.0 · as of 15 Sep 2026
Short-sale volume share17.6%5-day average of daily volume

Short-sale volume as % of daily volume

11%17%23%29%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$6.69M (6 inflow days, 14 outflow days).

The five largest holders on file together own 40.9% of shares outstanding.

Largest holders

  • Paulson & Co. Inc.16.46%
  • BlackRock12.64%
  • Jennison Associates LLC4.30%
  • Vanguard Capital Management, LLC3.85%
  • Empyrean Capital Partners, LP3.69%
  • State Street Global Advisors3.45%
  • Geode Capital Management, LLC2.73%
  • Dimensional Fund Advisors2.57%

By investor type

  • Mutual Fund65.20%
  • Hedge Fund31.39%
  • Public Company2.43%
  • Family Office/Trust1.84%
  • Government Pension Fund1.78%
  • Insurance Company0.70%
  • Private Company0.62%
  • Individual/Insider0.52%

Reported short interest has fallen from 3.67% to 3.02% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 1,071,734 3.0% 2.0
31 Aug 2026 848,026 2.4% 2.6
14 Aug 2026 887,656 2.5% 2.3
31 Jul 2026 960,244 2.7% 2.3
15 Jul 2026 978,433 2.7% 2.3
30 Jun 2026 1,305,991 3.7% 1.5

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