Compass Therapeutics
CMPX · NASDAQ
$0.8333+$0.0008 (+0.10%)TodayMarket closed ·
Prev close $0.8325
Who owns CMPX
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 57.1% of CMPX’s shares.
- Tang Capital Management, LLC10.0%
- OrbiMed Advisors, LLC8.5%
- Montanova Capital, LLC7.8%
- BlackRock Institutional Trust Company, N.A.5.7%
- Next 6 largest institutions25.2%
- All other shareholders42.9%
| Holder | Shares | % of shares |
|---|---|---|
| Tang Capital Management, LLC | 17.99M | 9.99% |
| OrbiMed Advisors, LLC | 15.22M | 8.45% |
| Montanova Capital, LLC | 14.10M | 7.83% |
| BlackRock Institutional Trust Company, N.A. | 10.24M | 5.68% |
| State Street Investment Management (US) | 9.95M | 5.53% |
| Enavate Sciences GP, LLC | 7.79M | 4.32% |
| Boylan (James P.) | 7.79M | 4.32% |
| Vivo Capital, LLC | 7.76M | 4.31% |
| Vanguard Capital Management, LLC | 6.12M | 3.40% |
| Schuetz (Thomas J.) | 5.91M | 3.28% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| State Street SPDR S&P Biotech ETF | 7.22M | 4.01% |
| Vanguard Total Stock Market Index Fund | 4.19M | 2.33% |
| iShares Russell 2000 ETF | 3.44M | 1.91% |
| Vanguard Extended Market Index Fund | 1.80M | 1.00% |
| Fidelity Enhanced Small Cap Core ETF | 1.56M | 0.86% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders bought $21.25K (2 trades) of CMPX on the open market, with no sales.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Lerner Neil | Buy | 20.00K | $18.40K |
| Lerner Neil | Buy | 2.50K | $2.85K |
| Anderman Jonathan | Award | 25.00K | $47.25K |
| Lerner Neil | Award | 15.00K | $28.35K |
Short interest
Settled Sep 30, 2026
- Shares short
- 40.36M
- Days to cover
- 6.26
- % of shares outstanding
- 22.41%
- Average daily volume
- 6.45M
- Change since last report
- −3.1%
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