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Korsana Biosciences KRSA

US equityMarket cap rank #2812Biotechnology
$30.72 +$0.23 (+0.75%)
Pre-market · Oct 6, 7:00 am ET · After hours $30.72 0.00%
Open$30.49
Prev close$30.49
Day range$29.93 – $31.66
Volume104.3K
Market cap$1.92B
P/E (TTM)–
Dividend yield–

Ownership & positioning

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

Institutional ownership36.9%+36.88 pts vs. prior quarter
Institutions holding7+7 vs. prior quarter
Short interest0.01% of floatDays to cover 1.0 · as of 15 Sep 2026
Short-sale volume share12.6%5-day average of daily volume

Short-sale volume as % of daily volume

0%8%16%23%Sep '26Sep '26Oct '26

Large-order net flow, last 19 sessions

Net of large-order buying minus selling, in USD. Over this window: +$201.9K (10 inflow days, 9 outflow days).

The five largest holders on file together own 36.5% of shares outstanding.

Largest holders

  • Fairmount Funds Management LLC19.99%
  • VR Management, LLC7.79%
  • Wellington Management Group6.10%
  • Venrock Management, LLC2.20%
  • General Atlantic Service Company, L.P.0.43%
  • FMR0.37%
  • Jonathan Violin0.31%
  • Vanguard Capital Management, LLC0.00%

By investor type

  • Hedge Fund19.99%
  • VC/PE Fund10.42%
  • Mutual Fund6.47%
  • Individual/Insider0.31%

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 4,442 0.0% 1.0

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