COMPASS Pathways plc - Depositary Receipt (Common Stock)
US ˙ NasdaqGS ˙ US20451W1018

SecurityCMPS / COMPASS Pathways plc - Depositary Receipt (Common Stock)
InstitutionSimplex Trading, Llc
Latest Disclosed Ownership267,465 shares
Latest Disclosed Value $ 1,479,081
Simplex Trading, Llc reports 154.17% increase in ownership of CMPS / COMPASS Pathways plc - Depositary Receipt (Common Stock)

On May 14, 2026 - Simplex Trading, Llc filed a 13F-HR form disclosing ownership of 267,465 shares of COMPASS Pathways plc - Depositary Receipt (Common Stock) (US:CMPS) valued at $1,479,081 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 105,230 shares of COMPASS Pathways plc - Depositary Receipt (Common Stock). This represents a change in shares of 154.17% during the quarter. The current value of the position is $3,394,131 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F COMPASS PATHWAYS COM 20451W101 267,465 162,235 154.17 1,479 103.72 0.0005
2026-02-11 2025-12-31 13F COMPASS PATHWAYS COM 20451W101 105,230 -15,658 -12.95 726 0.0004
2025-11-12 2025-09-30 13F COMPASS PATHWAYS COM 20451W101 120,888 -62,143 -33.95 1 0.0004
2025-08-05 2025-06-30 13F COMPASS PATHWAYS COM 20451W101 183,031 134,380 276.21 1 0.0003
2025-05-12 2025-03-31 13F COMPASS PATHWAYS COM 20451W101 48,651 48,651 0 0.0001
2025-02-11 2024-12-31 13F COMPASS PATHWAYS COM 20451W101 0 -101,258 -100.00 0 0.0000
2024-11-08 2024-09-30 13F COMPASS PATHWAYS COM 20451W101 101,258 79,766 371.14 1 0.0004
2024-07-25 2024-06-30 13F COMPASS PATHWAYS COM 20451W101 21,492 17,158 395.89 0 0.0001
2024-04-25 2024-03-31 13F COMPASS PATHWAYS COM 20451W101 4,334 -6,788 -61.03 0 0.0000
2024-02-02 2023-12-31 13F COMPASS PATHWAYS COM 20451W101 11,122 10,606 2,055.43 0 0.0001
2023-11-01 2023-09-30 13F COMPASS PATHWAYS COM 20451W101 516 -1,611 -75.74 0 0.0000
2023-08-04 2023-06-30 13F COMPASS PATHWAYS COM 20451W101 2,127 2,127 0 0.0000
2023-04-27 2023-03-31 13F COMPASS PATHWAYS COM 20451W101 0 -100 -100.00 0 0.0000
2023-02-02 2022-12-31 13F COMPASS PATHWAYS COM 20451W101 100 -11,920 -99.17 0 -100.00
2022-11-04 2022-09-30 13F COMPASS PATHWAYS COM 20451W101 12,020 6,533 119.06 128 116.95 0.0001
2022-08-03 2022-06-30 13F COMPASS PATHWAYS COM 20451W101 5,487 -57,183 -91.24 59 -92.69 0.0001
2022-05-02 2022-03-31 13F COMPASS PATHWAYS COM 20451W101 62,670 34,599 123.26 807 30.16 0.0007
2022-02-23 2021-12-31 13F/A-1 COMPASS PATHWAYS COM 20451W101 28,071 15,314 120.04 620 30.80 0.0006
2022-02-04 2021-12-31 13F COMPASS PATHWAYS COM 20451W101 12,757 0 474 0.0004
2021-10-28 2021-09-30 13F COMPASS PATHWAYS COM 20451W101 12,757 1,006 8.56 474 5.80 0.0004
2021-08-12 2021-06-30 13F COMPASS PATHWAYS COM 20451W101 11,751 9,197 360.10 448 376.60 0.0004
2021-04-26 2021-03-31 13F COMPASS PATHWAYS COM 20451W101 2,554 2,554 94 0.0002
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.