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Beam Therapeutics BEAM

US equityMarket cap rank #2581AI medical concept stocksGene Editing
$25.67 +$1.17 (+4.78%)
Pre-market · Oct 6, 7:30 am ET · After hours $25.55 -0.47%
Open$24.48
Prev close$24.50
Day range$23.83 – $26.04
Volume2.00M
Market cap$2.65B
P/E (TTM)–
Dividend yield–

Ownership & positioning

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

Institutional ownership106.7%-4.33 pts vs. prior quarter
Institutions holding337-1 vs. prior quarter
Insider trades (recent)20 buys / 30 sellsNet selling
Short interest25.06% of floatDays to cover 12.6 · as of 15 Sep 2026
Short-sale volume share30.3%5-day average of daily volume

Short-sale volume as % of daily volume

20%25%30%35%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: +$1.15M (9 inflow days, 11 outflow days).

The five largest holders on file together own 47.1% of shares outstanding.

Largest holders

  • FMR11.76%
  • Farallon Capital Management, L.L.C.10.24%
  • ARK Investment Management LLC10.24%
  • BlackRock9.00%
  • State Street Global Advisors5.83%
  • Vanguard Capital Management, LLC5.31%
  • Vanguard Portfolio Management, LLC4.92%
  • Arch Venture Partners, L.P.4.54%

By investor type

  • Mutual Fund73.43%
  • Hedge Fund18.62%
  • VC/PE Fund8.43%
  • Public Company3.52%
  • Private Company1.89%
  • Individual/Insider1.36%
  • Government Pension Fund0.36%
  • Family Office/Trust0.28%

Reported short interest has risen from 22.24% to 25.06% 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 25,884,796 25.1% 12.6
31 Aug 2026 25,802,667 25.0% 14.8
14 Aug 2026 24,374,054 23.6% 16.1
31 Jul 2026 23,498,484 22.8% 11.3
15 Jul 2026 23,215,449 22.6% 8.9
30 Jun 2026 22,881,525 22.2% 8.4

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