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Immunome IMNM

US equityMarket cap rank #2622Biotechnology
$21.17 +$0.27 (+1.29%)
Pre-market · Oct 6, 7:40 am ET · After hours $21.31 +0.66%
Open$20.79
Prev close$20.90
Day range$20.67 – $21.48
Volume1.22M
Market cap$2.50B
P/E (TTM)–
Dividend yield–

Ownership & positioning

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

Institutional ownership110.9%-0.16 pts vs. prior quarter
Institutions holding248+0 vs. prior quarter
Insider trades (recent)31 buys / 19 sellsNet buying
Short interest14.30% of floatDays to cover 20.6 · as of 15 Sep 2026
Short-sale volume share29.5%5-day average of daily volume

Short-sale volume as % of daily volume

15%22%29%36%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$772.6K (6 inflow days, 14 outflow days).

The five largest holders on file together own 51.1% of shares outstanding.

Largest holders

  • T. Rowe Price Group, Inc.18.89%
  • FMR14.96%
  • BlackRock7.75%
  • State Street Global Advisors4.84%
  • Vanguard Capital Management, LLC4.67%
  • Wellington Management Group4.59%
  • Redmile Group, LLC4.32%
  • Sirenia Capital Management LP4.25%

By investor type

  • Mutual Fund86.33%
  • Hedge Fund11.25%
  • VC/PE Fund4.59%
  • Public Company4.50%
  • Private Company3.74%
  • Individual/Insider1.15%
  • Government Pension Fund0.31%
  • Insurance Company0.12%

Reported short interest has fallen from 15.33% to 14.30% 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 16,244,557 14.3% 20.6
31 Aug 2026 15,634,596 13.8% 12.6
14 Aug 2026 17,392,529 15.3% 14.9
31 Jul 2026 17,981,724 15.9% 23.0
15 Jul 2026 17,237,765 15.2% 10.5
30 Jun 2026 17,366,167 15.3% 8.1

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