Ticker · CUSIP 20454B104
Holders (tracked)
6
Combined shares
3,809,005
Combined value
$20.45M
Last close
$6.00
Quarter
2025Q4
Price · 1Y$6.00+4.25 (+242.86%)H $6.69 · L $1.69 · Avg Vol 1.7M
Position opened
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
Price is +11.7% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
13 events
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−127,589 shares · 2025Q4Position
- D.E. Shaw & Co. opened position2026-02-17+51,482 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−128,286 shares · 2025Q4Position
- T. Rowe Price added2026-02-17+13,900 shares · 2025Q4Position
- Wellington Management trimmed2026-02-17−1,275 shares · 2025Q4Position
- AQR Capital Management added2026-02-17+96,070 shares · 2025Q4Position
- Renaissance Technologies exited2026-02-12−79,000 shares · 2025Q4Position
- AQR Capital Management added2025-11-14+10,697 shares · 2025Q3Position
- Two Sigma Investments exited2025-11-14−16,097 shares · 2025Q3Position
- Wellington Management trimmed2025-11-14−29,916 shares · 2025Q3Position
- Izzy Englander (Millennium Mgmt) added2025-11-14+2,386,367 shares · 2025Q3Position
- T. Rowe Price added2025-11-14+9,646 shares · 2025Q3Position
- Renaissance Technologies trimmed2025-11-13−145,600 shares · 2025Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of CMPX…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| Wellington Management | 2024Q1 | $2.20 | +172.3% | $1.9M |
| T. Rowe Price | 2023Q2 | $3.01 | +99.2% | $423K |
| Izzy Englander (Millennium Mgmt) | 2021Q4 | $3.14 | +91.0% | $18.7M |
| Ken Griffin (Citadel Advisors) | 2021Q4 | $3.41 | +75.9% | $634K |
| AQR Capital Management | 2025Q2 | $4.38 | +37.1% | $931K |
| D.E. Shaw & Co. | 2025Q4 | $5.37 | +11.7% | $309K |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions1
- D.E. Shaw & Co.+51,482$276K
Added to2
- AQR Capital Management+96,070$516K
- T. Rowe Price+13,900$75
Trimmed3
- Izzy Englander (Millennium Mgmt)−128,286$689K
- Ken Griffin (Citadel Advisors)−127,589$685K
- Wellington Management−1,275$7K
Exited1
- Renaissance Technologies−79,000$277K
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 2 | $71K |
| 2022Q2 | 3 | $682K |
| 2022Q3 | 3 | $2.3M |
| 2022Q4 | 4 | $7.2M |
| 2023Q1 | 6 | $8.6M |
| 2023Q2 | 3 | $19.8M |
| 2023Q3 | 5 | $12.5M |
| 2023Q4 | 6 | $11.4M |
| 2024Q1 | 7 | $13.7M |
| 2024Q2 | 7 | $7.9M |
| 2024Q3 | 5 | $1.3M |
| 2024Q4 | 4 | $733K |
| 2025Q1 | 7 | $2.7M |
| 2025Q2 | 7 | $4.0M |
| 2025Q3 | 6 | $13.9M |
| 2025Q4 | 6 | $20.5M |
Who owns CMPX
6 super-investors · 2025Q4
Tracked stake
3.81M
shares
Combined value
$20M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Added2Trim3
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Izzy Englander Millennium Mgmt | 3.11M | $17M |
| 2 | Wellington Management | 316.8K | $2M |
| 3 | AQR Capital Management | 155.2K | $834K |
| 4 | Ken Griffin Citadel Advisors | 105.7K | $568K |
| 5 | T. Rowe Price | 70.5K | $379K |
| 6 | D.E. Shaw & Co. | 51.5K | $276K |
Recent moves
20 transactions
- +96,070 · 2025Q4
- −1,275 · 2025Q4
- +13,900 · 2025Q4
- −127,589 · 2025Q4
- +51,482 · 2025Q4
- −128,286 · 2025Q4
- −79,000 · 2025Q4
- +9,646 · 2025Q3
- +2,386,367 · 2025Q3
- −29,916 · 2025Q3
- −16,097 · 2025Q3
- +10,697 · 2025Q3
- −145,600 · 2025Q3
- +125,535 · 2025Q2
- +306,117 · 2025Q2
- −35,142 · 2025Q2
- +48,451 · 2025Q2
- −96,900 · 2025Q2
- +511,231 · 2025Q1
- −93,999 · 2025Q1
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