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BioCryst Pharmaceuticals BCRX

US equityMarket cap rank #2750Drug Manufacturers - Specialty & Generic
$8.10 −$0.07 (-0.86%)
Pre-market · Oct 6, 7:30 am ET · After hours $8.10 0.00%
Open$8.17
Prev close$8.17
Day range$7.92 – $8.25
Volume4.71M
Market cap$2.07B
P/E (TTM)–
Dividend yield–

Ownership & positioning

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

Institutional ownership103.8%-0.47 pts vs. prior quarter
Institutions holding376-3 vs. prior quarter
Insider trades (recent)38 buys / 9 sellsNet buying
Short interest13.65% of floatDays to cover 7.3 · as of 15 Sep 2026
Short-sale volume share17.2%5-day average of daily volume

Short-sale volume as % of daily volume

10%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: −$29.27M (7 inflow days, 13 outflow days).

The five largest holders on file together own 32.5% of shares outstanding.

Largest holders

  • BlackRock9.35%
  • RA Capital Management, L.P.6.19%
  • State Street Global Advisors5.94%
  • Deerfield Management Company, L.P.5.91%
  • Vanguard Capital Management, LLC5.14%
  • Vanguard Portfolio Management, LLC4.36%
  • TCG Crossover Management, LLC4.31%
  • Perceptive Advisors LLC4.03%

By investor type

  • Mutual Fund54.54%
  • Hedge Fund22.21%
  • VC/PE Fund17.01%
  • Public Company4.30%
  • Private Company3.61%
  • Government Pension Fund1.15%
  • Individual/Insider0.90%
  • Insurance Company0.75%

Reported short interest has fallen from 19.16% to 13.65% 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 34,868,460 13.6% 7.3
31 Aug 2026 34,050,906 13.3% 14.4
14 Aug 2026 32,939,174 12.9% 8.0
31 Jul 2026 32,804,839 12.9% 12.4
15 Jul 2026 31,208,457 12.3% 6.0
30 Jun 2026 48,685,241 19.2% 6.0

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