COMPASS Pathways plc (CMPS) Ownership
CMPS ownership summary
as of October 17, 2026- Institutions
- 68.7% of shares outstanding
- Insiders
- 7.62% of shares outstanding
- Shares outstanding
- 138.5M
- Float
- 107.0M shares available to trade
- Short interest
- 12.46% 17.0M shares short
- Days to cover
- 6.08 short interest up 11.8% vs prior month
- Institutions 68.68%
- Insiders 7.62%
- Other investors 23.70%
CMPS top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Deep Track Capital, LP | 8.78% | 12.2M | $130.7M | — | June 30, 2026 |
| 2 | RTW INVESTMENTS, LLC | 7.73% | 10.7M | $115.0M | +68,584 (+0.6%) | June 30, 2026 |
| 3 | TANG CAPITAL MANAGEMENT LLC | 3.61% | 5.0M | $53.8M | +997,800 (+24.9%) | June 30, 2026 |
| 4 | Two Sigma Investments LLC | 3.23% | 4.5M | $48.1M | +1.9M (+73.0%) | June 30, 2026 |
| 5 | Marshall Wace Asset Management Ltd | 3.13% | 4.3M | $46.5M | +290,347 (+7.2%) | June 30, 2026 |
| 6 | ARK Investment Management LLC | 2.49% | 3.5M | $37.1M | +150,915 (+4.6%) | June 30, 2026 |
| 7 | Point72 Asset Management, L.P. | 1.89% | 2.6M | $28.2M | +2.6M (0.0%) | June 30, 2026 |
| 8 | Logos Global Management LP | 1.62% | 2.2M | $24.2M | +2.2M (0.0%) | June 30, 2026 |
| 9 | Eagle Health Investments LP | 1.49% | 2.1M | $22.1M | — | June 30, 2026 |
| 10 | Bank of America Corp | 1.46% | 2.0M | $21.7M | +2.0M (+6,145.7%) | June 30, 2026 |
| 11 | Dafna Capital Management LLC | 1.45% | 2.0M | $21.6M | −406,930 (−16.8%) | June 30, 2026 |
| 12 | NEXTBio Capital Management LP | 1.28% | 1.8M | $19.1M | −245,648 (−12.2%) | June 30, 2026 |
| 13 | Kalehua Capital Management LLC | 1.18% | 1.6M | $17.6M | — | June 30, 2026 |
| 14 | UBS Group AG | 1.07% | 1.5M | $15.9M | −372,600 (−20.1%) | June 30, 2026 |
| 15 | Aisling Capital Management LP | 1.03% | 1.4M | $15.4M | — | June 30, 2026 |
| 16 | Renaissance Technologies Corp | 1.03% | 1.4M | $15.4M | +566,535 (+65.5%) | June 30, 2026 |
| 17 | Candriam Luxembourg S.C.A. | 0.92% | 1.3M | $13.7M | +1.3M (0.0%) | June 30, 2026 |
| 18 | Woodline Partners LP | 0.78% | 1.1M | $11.7M | +910,565 (+519.0%) | June 30, 2026 |
| 19 | Citadel Advisors Llc | 0.73% | 1.0M | $10.8M | +735,391 (+272.9%) | June 30, 2026 |
| 20 | Jefferies Financial Group Inc | 0.72% | 994K | $10.7M | −472,969 (−32.2%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 12 holders added 13.7M shares and 4 cut 1.5M.
CMPS top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | ARK Genomic Revolution ETF | 3.27% | 4.5M | $48.6M | +11,062 (+0.2%) | September 30, 2026 |
| 2 | BIT Global Technology Leaders R-I | 1.26% | 1.7M | $18.7M | +152,009 (+9.5%) | June 30, 2026 |
| 3 | iShares Biotechnology ETF | 0.64% | 887K | $9.5M | −6,720 (−0.8%) | September 30, 2026 |
| 4 | AdvisorShares Psychedelics ETF | 0.35% | 483K | $5.2M | — | September 30, 2026 |
| 5 | TEQ - Disruptive Technologies - I-II | 0.33% | 453K | $4.9M | −70,954 (−13.5%) | August 31, 2026 |
| 6 | L&G Healthcare Tech & Innovt ETF USD Acc | 0.20% | 282K | $3.0M | +4,581 (+1.7%) | September 30, 2026 |
| 7 | ARK Genomic Revolution ETF A USD Acc | 0.20% | 281K | $3.0M | — | September 30, 2026 |
| 8 | SEB Nordamerikafond Småbolag | 0.16% | 224K | $2.4M | — | August 31, 2026 |
| 9 | ALPS Medical Breakthroughs ETF | 0.13% | 183K | $2.0M | — | September 30, 2026 |
| 10 | Royce Small-Cap Growth Growth Svc | 0.13% | 178K | $1.9M | −71,000 (−28.5%) | June 30, 2026 |
| 11 | HealthInvest Sustainable Healthcare E | 0.12% | 165K | $1.8M | +55,856 (+51.0%) | September 30, 2026 |
| 12 | Premier Miton Diversified GrB Inc | 0.11% | 155K | $1.7M | +155,350 (0.0%) | August 31, 2026 |
| 13 | TEQ- Disruptive Tech In I-III | 0.11% | 148K | $1.6M | −51,387 (−25.7%) | August 31, 2026 |
| 14 | Adara Smaller Companies | 0.08% | 113K | $1.2M | +6,719 (+6.3%) | August 31, 2026 |
| 15 | BIT Defensive Growth S | 0.08% | 110K | $1.2M | +110,239 (0.0%) | June 30, 2026 |
| 16 | iShares Nasdaq US Biotech ETF USD Acc | 0.08% | 107K | $1.1M | +892 (+0.8%) | September 30, 2026 |
| 17 | Undly L&G Future World UK Eq Idx Fd | 0.07% | 99K | $1.1M | −122,200 (−55.3%) | June 30, 2026 |
| 18 | State Street® SPDR® S&P® Intl Sm Cp ETF | 0.07% | 98K | $1.1M | — | September 30, 2026 |
| 19 | Simplify Propel Opportunities ETF | 0.07% | 90K | $971,596 | — | September 30, 2026 |
| 20 | Royce Small-Cap Trust | 0.06% | 89K | $956,750 | −44,000 (−33.1%) | June 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
CMPS insider transactions
latest 12| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2024-09-26 | Life Sciences N.V. Atai | Sell | $6.05 | 2,660,000 | $16.1M |
| 2024-05-02 | George Jay Goldsmith | Sell | $8.29 | 9,621 | $79,758 |
| 2024-04-16 | George Jay Goldsmith | Sell | $8.53 | 23,881 | $203,705 |
| 2024-04-01 | George Jay Goldsmith | Sell | $8.96 | 25,750 | $230,720 |
| 2024-03-28 | Ekaterina Malievskaia | Sell | $8.65 | 25,750 | $222,738 |
| 2024-03-12 | George Jay Goldsmith | Sell | $10.58 | 15,740 | $166,529 |
| 2024-02-26 | Ekaterina Malievskaia | Sell | $10.45 | 17,765 | $185,644 |
| 2024-02-23 | Ekaterina Malievskaia | Sell | $10.06 | 11,862 | $119,332 |
| 2024-02-06 | Ekaterina Malievskaia | Sell | $10.59 | 19,853 | $210,243 |
| 2024-01-22 | George Jay Goldsmith | Sell | $8.35 | 25,750 | $215,012 |
| 2024-01-19 | George Jay Goldsmith | Sell | $7.99 | 20,205 | $161,438 |
| 2023-12-13 | Ekaterina Malievskaia | Sell | $7.82 | 2,855 | $22,326 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
CMPS shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns CMPS
Institutional investors own 68.7% of COMPASS Pathways's shares and insiders 7.62%. The largest holder is Deep Track Capital, LP with 8.78% of the shares (12.2M), as of June 30, 2026. Among the top 20 institutions, 12 added shares and 4 reduced their stake in the latest filings. Short interest is 12.46% of the float, or 6.08 days of average trading volume. The share count rose 183.7% since 2018.
Related: CMPS analyst forecast, CMPS key metrics. See the CMPS stock overview for the latest quote and news.
CMPS ownership FAQ
Who owns the most COMPASS Pathways stock?
The largest shareholders of COMPASS Pathways are Deep Track Capital, LP (8.78%), RTW INVESTMENTS, LLC (7.73%), TANG CAPITAL MANAGEMENT LLC (3.61%), Two Sigma Investments LLC (3.23%), Marshall Wace Asset Management Ltd (3.13%).
What percentage of COMPASS Pathways is owned by institutions?
Institutions hold 68.7% of COMPASS Pathways's shares outstanding; insiders hold 7.62%.
Which funds own COMPASS Pathways?
The largest fund holders of COMPASS Pathways are ARK Genomic Revolution ETF (3.27%), BIT Global Technology Leaders R-I (1.26%), iShares Biotechnology ETF (0.64%), AdvisorShares Psychedelics ETF (0.35%), TEQ - Disruptive Technologies - I-II (0.33%).
What is COMPASS Pathways's short interest?
17.0M shares of COMPASS Pathways were sold short, 12.46% of the float; at the average daily volume it would take 6.08 days to cover.
Are insiders buying or selling COMPASS Pathways?
Of the latest 12 reported insider transactions in COMPASS Pathways (since December 13, 2023), 0 were purchases and 12 were sales.
How many shares of COMPASS Pathways are outstanding?
COMPASS Pathways has 138.5M shares outstanding, of which 107.0M are in the public float.