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 (Q2 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., Palo Alto Investors Lp, Millennium Management Llc, Aqr Capital Management Llc, and Citadel Advisors Llc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Manufacturers Life Insurance Company, TheBuy+751+1.1%68,217$149.40KQ2 2026Sep 09, 2026
Citadel Advisors LlcBuy+2,849,264+395.0%3,570,674$7.82MQ2 2026Sep 02, 2026
Optimize Financial IncSell-279-0.3%80,160$175.55KQ2 2026Aug 27, 2026
California State Teachers Retirement SystemSell-44,603-39.7%67,713$148.29KQ2 2026Aug 24, 2026
Palo Alto Investors LpBuy+4,317,309+285.1%5,831,813$12.77MQ2 2026Aug 19, 2026
Mercer Global Advisors IncBuy+106,570106,570$233.39KQ2 2026Aug 19, 2026
Seven Fleet Capital Management LpSell-283,906-54.9%233,066$510.42KQ2 2026Aug 17, 2026
Adage Capital Partners Gp, L.L.C.Sell-7,300,000-86.0%1,186,500$2.60MQ2 2026Aug 14, 2026
Millennium Management LlcBuy+3,867,027+457.0%4,713,247$10.32MQ2 2026Aug 14, 2026
Aqr Capital Management LlcBuy+3,308,709+1650.8%3,509,137$7.69MQ2 2026Aug 14, 2026
Vivo Capital, LlcSell-1,788,406-18.7%7,757,060$16.99MQ2 2026Aug 14, 2026
Goldman Sachs Group IncBuy+1,535,606+77.0%3,531,000$7.73MQ2 2026Aug 14, 2026
Kingdon Capital Management, L.L.C.Buy+1,400,0001,400,000$3.07MQ2 2026Aug 14, 2026
Tang Capital Management LlcBuy+1,199,973+7.1%17,990,782$39.40MQ2 2026Aug 14, 2026
Qube Research & Technologies LtdBuy+1,137,133+44.6%3,687,489$8.08MQ2 2026Aug 14, 2026
Schonfeld Strategic Advisors LlcSell-983,777-91.4%92,227$201.97KQ2 2026Aug 14, 2026
Squarepoint Ops LlcBuy+957,305+1906.9%1,007,507$2.21MQ2 2026Aug 14, 2026
Blackstone Inc.Buy+899,936899,936$1.97MQ2 2026Aug 14, 2026
Barclays PlcSell-739,644-93.6%50,397$110.37KQ2 2026Aug 14, 2026
Point72 Asset Management, L.P.Buy+686,577686,577$1.50MQ2 2026Aug 14, 2026
Artia Global Partners LpBuy+383,200383,200$839.21KQ2 2026Aug 14, 2026
Bank Of America CorpSell-298,694-34.5%566,919$1.24MQ2 2026Aug 14, 2026
Two Sigma Investments, LpBuy+287,212+867.7%320,312$701.48KQ2 2026Aug 14, 2026
Royce & Associates LpSell-283,018-17.5%1,336,780$2.93MQ2 2026Aug 14, 2026
Exome Asset Management LlcBuy+276,165276,165$604.80KQ2 2026Aug 14, 2026
Caption Management, LlcBuy+263,577263,577$577.23KQ2 2026Aug 14, 2026
Acuta Capital Partners, LlcSell-253,863-29.9%595,213$1.30MQ2 2026Aug 14, 2026
Rock Springs Capital Management LpBuy+219,621+6.6%3,524,929$7.72MQ2 2026Aug 14, 2026
Orion Porfolio Solutions, LlcBuy+213,863213,863$468.36KQ2 2026Aug 14, 2026
Birchview Capital, LpBuy+209,133+14.3%1,675,000$3.67MQ2 2026Aug 14, 2026
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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.