COMPASS THERAPEUTICS INC (CMPX) Institutional Ownership Changes & 13F Activity
COMPASS THERAPEUTICS INC (CMPX). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Adage Capital Partners Gp, L.L.C., Millennium Management Llc, Qube Research & Technologies Ltd, Logos Global Management Lp, and State Street Corp.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| M&T Bank Corp | Sell | -749,186 | -98.0% | 15,043 | $79.58K | Q1 2026 | Sep 04, 2026 |
| Algert Global Llc | Buy | +36,780 | — | 36,780 | $194.57K | Q1 2026 | Aug 11, 2026 |
| Wells Fargo & Company/Mn | Sell | -97,058 | -67.0% | 47,740 | $252.54K | Q1 2026 | Jul 08, 2026 |
| Bank Of America Corp | Buy | +599,179 | +224.9% | 865,613 | $4.58M | Q1 2026 | May 18, 2026 |
| California State Teachers Retirement System | Buy | +104,260 | +1294.2% | 112,316 | $594.15K | Q1 2026 | May 18, 2026 |
| Adage Capital Partners Gp, L.L.C. | Buy | +4,050,000 | +91.3% | 8,486,500 | $44.89M | Q1 2026 | May 15, 2026 |
| Millennium Management Llc | Sell | -2,263,066 | -72.8% | 846,220 | $4.48M | Q1 2026 | May 15, 2026 |
| Qube Research & Technologies Ltd | Buy | +2,108,551 | +477.3% | 2,550,356 | $13.49M | Q1 2026 | May 15, 2026 |
| Logos Global Management Lp | Buy | +2,000,000 | +173.9% | 3,150,000 | $16.66M | Q1 2026 | May 15, 2026 |
| State Street Corp | Buy | +1,804,451 | +36.9% | 6,694,976 | $35.42M | Q1 2026 | May 15, 2026 |
| Rtw Investments, Lp | Buy | +1,686,599 | +67.5% | 4,186,599 | $22.15M | Q1 2026 | May 15, 2026 |
| Great Point Partners Llc | Buy | +1,350,000 | — | 1,350,000 | $7.14M | Q1 2026 | May 15, 2026 |
| Sofinnova Investments, Inc. | Sell | -1,309,285 | -38.9% | 2,056,161 | $10.88M | Q1 2026 | May 15, 2026 |
| Palo Alto Investors Lp | Sell | -1,017,915 | -40.2% | 1,514,504 | $8.01M | Q1 2026 | May 15, 2026 |
| Braidwell Lp | Sell | -821,672 | -29.5% | 1,965,106 | $10.40M | Q1 2026 | May 15, 2026 |
| Ikarian Capital, Llc | Sell | -782,000 | -97.8% | 18,000 | $95.22K | Q1 2026 | May 15, 2026 |
| Fmr Llc | Sell | -777,990 | -30.2% | 1,801,721 | $9.53M | Q1 2026 | May 15, 2026 |
| Schonfeld Strategic Advisors Llc | Buy | +623,562 | +137.8% | 1,076,004 | $5.69M | Q1 2026 | May 15, 2026 |
| Rock Springs Capital Management Lp | Sell | -621,894 | -15.8% | 3,305,308 | $17.49M | Q1 2026 | May 15, 2026 |
| Citadel Advisors Llc | Buy | +615,728 | +582.6% | 721,410 | $3.82M | Q1 2026 | May 15, 2026 |
| Arrowmark Colorado Holdings Llc | Buy | +514,793 | — | 514,793 | $2.72M | Q1 2026 | May 15, 2026 |
| Goldman Sachs Group Inc | Buy | +477,979 | +31.5% | 1,995,394 | $10.56M | Q1 2026 | May 15, 2026 |
| Balyasny Asset Management L.P. | Sell | -474,185 | -29.8% | 1,119,090 | $5.92M | Q1 2026 | May 15, 2026 |
| Trexquant Investment Lp | Buy | +421,831 | — | 421,831 | $2.23M | Q1 2026 | May 15, 2026 |
| Dv Trading Llc | Buy | +399,359 | +1649.8% | 423,566 | $2.24M | Q1 2026 | May 15, 2026 |
| Atom Investors Lp | Buy | +267,652 | +346.3% | 344,933 | $1.82M | Q1 2026 | May 15, 2026 |
| Acuta Capital Partners, Llc | Sell | -244,224 | -22.3% | 849,076 | $4.49M | Q1 2026 | May 15, 2026 |
| Barclays Plc | Buy | +195,265 | +32.8% | 790,041 | $4.18M | Q1 2026 | May 15, 2026 |
| Tidal Investments Llc | Buy | +138,276 | — | 138,276 | $731.48K | Q1 2026 | May 15, 2026 |
| Birchview Capital, Lp | Sell | -127,071 | -8.0% | 1,465,867 | $7.75M | Q1 2026 | May 15, 2026 |
Frequently asked questions about CMPX activity
Which institutional owners are buying CMPX?
Institutional owners buying CMPX include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in CMPX activity?
"Buy" means an investor increased their reported position in CMPX compared to the prior reporting period. This reflects growing exposure to COMPASS THERAPEUTICS INC (CMPX) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in CMPX increasing?
Institutional interest in CMPX can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
Related CMPX Institutional Insights
- CMPX Overview
- CMPX 13F Institutional Holders
- CMPX Superinvestors
- Healthcare Sector Institutional Ownership
- Healthcare Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Healthcare Stocks By Institutional Investors
- Most Sold Healthcare Stocks By Institutional Investors
- CMPX Insider Trading & SEC Form 4 Activity
- CMPX Articles
- Top Institutional Investor Stock Rankings