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Alpha Tau Medical DRTS

US equityMarket cap rank #3041Biotechnology
$14.89 +$0.12 (+0.81%)
Pre-market · Oct 6, 4:10 am ET · After hours $14.76 -0.85%
Open$14.85
Prev close$14.77
Day range$14.68 – $15.04
Volume342.4K
Market cap$1.37B
P/E (TTM)–
Dividend yield–

Ownership & positioning

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

Institutional ownership24.6%-0.05 pts vs. prior quarter
Institutions holding80-1 vs. prior quarter
Insider trades (recent)0 buys / 16 sellsNet selling
Short interest3.77% of floatDays to cover 7.3 · as of 15 Sep 2026
Short-sale volume share20.2%5-day average of daily volume

Short-sale volume as % of daily volume

15%19%24%28%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: +$1.14M (10 inflow days, 10 outflow days).

The five largest holders on file together own 32.3% of shares outstanding.

Largest holders

  • Oramed Pharmaceuticals Inc.15.67%
  • Uzi Sofer12.47%
  • Michael Avruch1.64%
  • Gem Investment Advisors, LLC1.55%
  • HighTower Advisors, LLC0.95%
  • Boothbay Fund Management, LLC0.84%
  • Aquamarine Financial (Cayman) Ltd0.78%
  • Pier Capital, LLC0.75%

By investor type

  • Public Company15.85%
  • Individual/Insider14.91%
  • Mutual Fund6.47%
  • Hedge Fund1.87%
  • Private Company0.28%
  • Family Office/Trust0.17%
  • Sovereign Wealth Fund0.00%

Reported short interest has risen from 2.51% to 3.77% 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 3,483,059 3.8% 7.3
31 Aug 2026 3,092,873 3.5% 4.3
14 Aug 2026 3,060,060 3.5% 6.1
31 Jul 2026 3,208,323 3.6% 5.0
15 Jul 2026 2,980,762 3.4% 3.7
30 Jun 2026 2,206,828 2.5% 2.9

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