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COMPASS Pathways CMPS

US equityMarket cap rank #2931
$11.60 −$0.30 (-2.52%)
Pre-market · Oct 6, 7:30 am ET · After hours $11.71 +0.95%
Open$12.00
Prev close$11.90
Day range$11.27 – $12.06
Volume3.77M
Market cap$1.61B
P/E (TTM)–
Dividend yield–

Ownership & positioning

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

Institutional ownership69.9%-2.68 pts vs. prior quarter
Institutions holding238-2 vs. prior quarter
Insider trades (recent)33 buys / 17 sellsNet buying
Short interest11.00% of floatDays to cover 5.6 · as of 15 Sep 2026
Short-sale volume share14.4%5-day average of daily volume

Short-sale volume as % of daily volume

11%15%20%24%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: +$1.11M (9 inflow days, 11 outflow days).

The five largest holders on file together own 28.1% of shares outstanding.

Largest holders

  • Deep Track Capital, LP8.78%
  • RTW Investments, LP7.73%
  • BIT Capital GmbH4.58%
  • Tang Capital Management, LLC3.61%
  • Eli Lilly and Company3.44%
  • Two Sigma Investments, LP3.23%
  • Marshall Wace LLP3.13%
  • ARK Investment Management LLC2.49%

By investor type

  • Hedge Fund30.69%
  • Mutual Fund19.26%
  • VC/PE Fund10.88%
  • Public Company6.95%
  • Private Company1.87%
  • Individual/Insider1.64%
  • Endowment Fund0.15%
  • Family Office/Trust0.09%

Reported short interest has risen from 7.54% to 11.00% 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 15,235,260 11.0% 5.6
31 Aug 2026 14,469,018 10.4% 6.5
14 Aug 2026 14,099,681 10.2% 4.5
31 Jul 2026 13,640,893 10.1% 3.6
15 Jul 2026 12,843,566 9.5% 2.6
30 Jun 2026 10,173,681 7.5% 3.1

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