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ADMA Biologics ADMA

US equityMarket cap rank #2693Biotechnology
$10.11 +$0.39 (+4.01%)
Market closed · Oct 5, 10:20 pm ET · Last extended-hours $10.20 +0.89%
Open$9.63
Prev close$9.72
Day range$9.62 – $10.19
Volume3.51M
Market cap$2.26B
P/E (TTM)14.4
Dividend yield–

Ownership & positioning

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

Institutional ownership91.6%+0.40 pts vs. prior quarter
Institutions holding375-2 vs. prior quarter
Insider trades (recent)23 buys / 25 sellsNet selling
Short interest10.81% of floatDays to cover 10.8 · as of 15 Sep 2026
Short-sale volume share18.0%5-day average of daily volume

Short-sale volume as % of daily volume

11%16%21%26%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$292.5K (8 inflow days, 12 outflow days).

The five largest holders on file together own 38.7% of shares outstanding.

Largest holders

  • BlackRock17.12%
  • State Street Global Advisors7.64%
  • Vanguard Capital Management, LLC5.25%
  • Vanguard Portfolio Management, LLC4.50%
  • Rubric Capital Management LP4.17%
  • Capital Research3.91%
  • First Trust Advisors L.P.3.48%
  • Geode Capital Management, LLC2.71%

By investor type

  • Mutual Fund64.67%
  • Hedge Fund17.89%
  • Public Company3.43%
  • Individual/Insider1.89%
  • Private Company1.51%
  • Government Pension Fund1.50%
  • Family Office/Trust1.32%
  • VC/PE Fund1.11%

Reported short interest has risen from 10.46% to 10.81% 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 24,206,749 10.8% 10.8
31 Aug 2026 23,870,475 10.7% 13.9
14 Aug 2026 22,683,647 10.1% 8.0
31 Jul 2026 21,918,195 9.5% 8.8
15 Jul 2026 24,031,512 10.4% 9.1
30 Jun 2026 24,232,698 10.5% 5.8

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