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$CMPS
$11.81 +$0.76 (6.88%) Close

Ownership

13F as of Q2 2026 · 138.5M shares outstanding

Who owns CMPS?

By type of holder
Institutions 65.1% Insiders 0.0% Everyone else 34.9%
Concentration Top 10 holders own 41.7%
Deep Track Capital, LP 8.8% · RTW Investments, LP 7.7%
Institutional ownership
65.1%
-1.7 pts vs last qtr
Institutional holders
219
+26 vs last qtr
Net shares bought
−2.4M
by institutions in Q2 2026
New / sold out
61 / 35
positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026
  • BIT Capital GmbH +2.9M
  • Point72 Asset Management, L.P. NEW +2.6M

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Biggest sellers in Q2 2026
  • GMT Capital Corp SOLD OUT −3.1M
  • Millennium Management LLC −2.4M

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Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Compass Pathways PLC in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2019–FY2025
+1150.7%
+52.35% a year
Each share's claim on the business
−92.0%
shrank without buying or selling a share
Spent on buybacks vs paid in stock
— vs $93.4M
over 7 fiscal years
Diluted shares, split-adjusted
7.3M50.8M94.4M2019: 7.5M shares'192020: 17.0M shares'202021: 40.0M shares'212022: 42.4M shares'222023: 51.0M shares'232024: 67.5M shares'242025: 93.5M shares'25
Buybacks Stock-based comp
$0$9.8M$19.5M2019 buybacks: $02019 stock comp: $3.3M'192020 buybacks: $02020 stock comp: $18.0M'202021 buybacks: $02021 stock comp: $8.6M'212022 buybacks: $02022 stock comp: $13.1M'222023 buybacks: $02023 stock comp: $17.3M'232024 buybacks: $02024 stock comp: $19.5M'242025 buybacks: $02025 stock comp: $13.6M'25

How patient are the owners?

Institutional shares by how long they've been held
5+ years6% 3–5 years7% 1–3 years39% Under 1 year48%
Quarterly turnover
26.9%
of institutional shares changed hands
Top 10 managers, median time held
3 quarters

Super Investors

Investment managers reporting CMPS on Form 13F
DT
Deep Track Capital, LP
Shares
12.2M
% of company
8.78%
Change vs last qtr
Unchanged
Held since
2025
RI
RTW Investments, LP
Shares
10.7M
% of company
7.73%
Change vs last qtr
+68.6K (+0.6%)
Held since
2024

28 more super investors behind a free account

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Institutional Funds

Mutual funds and ETFs reporting CMPS on Form N-PORT; together they hold 5.1% of the company
AG
Position value
$50.7M
% of company
3.22%
% of the fund
3.25%
As of
July 31, 2026
IB
Position value
$10.8M
% of company
0.55%
% of the fund
0.12%
As of
June 30, 2026

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Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G
AL
ATAI Life Sciences N.V.
5%+ holder13D · 6.0%
Shares
5.8M
% of company
4.18%
Change vs last qtr
—
Held since
—
A
AtaiBeckley Inc.
5%+ holder13D · 5.0%
Shares
4.8M
% of company
3.44%
Change vs last qtr
—
Held since
—

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