CMPX Compass Therapeutics, Inc.: institutional ownership and insider trading
219 funds reported holding $408M of Compass Therapeutics, Inc. in their latest 13F filings; in Q2 2026 funds net sold $24.0M, with 60 new positions and 49 funds selling out; over the last 12 months insiders bought $96.9K and sold $0 on the open market.
CMPX revenue and earnings
- Quarter ended Jun 30, 2026: revenue n/a, net income −$25.2M
- Quarter ended Mar 31, 2026: revenue n/a, net income −$18.3M
- Quarter ended Dec 31, 2025: revenue n/a, net income −$15.7M
- Quarter ended Sep 30, 2025: revenue $0, net income −$14.3M
Famous investors holding CMPX
- Izzy Englander (Millennium Management): $10.3M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $8.12M, 0.0% of the portfolio
- Two Sigma (Two Sigma Investments): $701K, 0.0% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $448K, 0.0% of the portfolio
Largest institutional holders of CMPX
- VANGUARD GROUP INC — $43.2M
- TANG CAPITAL MANAGEMENT LLC — $39.4M
- ORBIMED ADVISORS LLC — $33.3M
- SUVRETTA CAPITAL MANAGEMENT, LLC — $30.9M
- BlackRock, Inc. (BLK) — $24.7M
- STATE STREET CORP (STT, STT-PG) — $21.8M
- Enavate Sciences GP, LLC — $17.1M
- Vivo Capital, LLC — $17.0M
- VANGUARD CAPITAL MANAGEMENT LLC — $13.4M
- Palo Alto Investors LP — $12.8M
Recent CMPX insider trades
- Oct 1, 2026: Lerner Neil bought 20,000 shares ($18.4K)
- Sep 24, 2026: Lerner Neil bought 2,500 shares ($2.85K)
- Apr 29, 2026: Anderman Jonathan bought 25,000 shares ($47.3K)
- Apr 29, 2026: Lerner Neil bought 15,000 shares ($28.4K)
5%+ owners
- STATE STREET CORPORATION: 5.5% (Schedule 13G, filed Aug 7, 2026)
Who owns the most CMPX stock?
The largest institutional holders of Compass Therapeutics, Inc. in the latest 13F filings are VANGUARD GROUP INC ($43.2M), TANG CAPITAL MANAGEMENT LLC ($39.4M), ORBIMED ADVISORS LLC ($33.3M).
Are insiders buying or selling CMPX?
Over the last 12 months insiders bought $96.9K and sold $0 of Compass Therapeutics, Inc. stock on the open market (SEC Form 4).
Which famous investors own CMPX?
Izzy Englander, Ken Griffin, Two Sigma, D. E. Shaw.
Which ETFs hold CMPX?
2 ETFs and mutual funds hold it among their top 100 positions, including MISGX, SBIO.