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.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
M&T Bank CorpSell-749,186-98.0%15,043$79.58KQ1 2026Sep 04, 2026
Algert Global LlcBuy+36,780—36,780$194.57KQ1 2026Aug 11, 2026
Wells Fargo & Company/MnSell-97,058-67.0%47,740$252.54KQ1 2026Jul 08, 2026
Bank Of America CorpBuy+599,179+224.9%865,613$4.58MQ1 2026May 18, 2026
California State Teachers Retirement SystemBuy+104,260+1294.2%112,316$594.15KQ1 2026May 18, 2026
Adage Capital Partners Gp, L.L.C.Buy+4,050,000+91.3%8,486,500$44.89MQ1 2026May 15, 2026
Millennium Management LlcSell-2,263,066-72.8%846,220$4.48MQ1 2026May 15, 2026
Qube Research & Technologies LtdBuy+2,108,551+477.3%2,550,356$13.49MQ1 2026May 15, 2026
Logos Global Management LpBuy+2,000,000+173.9%3,150,000$16.66MQ1 2026May 15, 2026
State Street CorpBuy+1,804,451+36.9%6,694,976$35.42MQ1 2026May 15, 2026
Rtw Investments, LpBuy+1,686,599+67.5%4,186,599$22.15MQ1 2026May 15, 2026
Great Point Partners LlcBuy+1,350,000—1,350,000$7.14MQ1 2026May 15, 2026
Sofinnova Investments, Inc.Sell-1,309,285-38.9%2,056,161$10.88MQ1 2026May 15, 2026
Palo Alto Investors LpSell-1,017,915-40.2%1,514,504$8.01MQ1 2026May 15, 2026
Braidwell LpSell-821,672-29.5%1,965,106$10.40MQ1 2026May 15, 2026
Ikarian Capital, LlcSell-782,000-97.8%18,000$95.22KQ1 2026May 15, 2026
Fmr LlcSell-777,990-30.2%1,801,721$9.53MQ1 2026May 15, 2026
Schonfeld Strategic Advisors LlcBuy+623,562+137.8%1,076,004$5.69MQ1 2026May 15, 2026
Rock Springs Capital Management LpSell-621,894-15.8%3,305,308$17.49MQ1 2026May 15, 2026
Citadel Advisors LlcBuy+615,728+582.6%721,410$3.82MQ1 2026May 15, 2026
Arrowmark Colorado Holdings LlcBuy+514,793—514,793$2.72MQ1 2026May 15, 2026
Goldman Sachs Group IncBuy+477,979+31.5%1,995,394$10.56MQ1 2026May 15, 2026
Balyasny Asset Management L.P.Sell-474,185-29.8%1,119,090$5.92MQ1 2026May 15, 2026
Trexquant Investment LpBuy+421,831—421,831$2.23MQ1 2026May 15, 2026
Dv Trading LlcBuy+399,359+1649.8%423,566$2.24MQ1 2026May 15, 2026
Atom Investors LpBuy+267,652+346.3%344,933$1.82MQ1 2026May 15, 2026
Acuta Capital Partners, LlcSell-244,224-22.3%849,076$4.49MQ1 2026May 15, 2026
Barclays PlcBuy+195,265+32.8%790,041$4.18MQ1 2026May 15, 2026
Tidal Investments LlcBuy+138,276—138,276$731.48KQ1 2026May 15, 2026
Birchview Capital, LpSell-127,071-8.0%1,465,867$7.75MQ1 2026May 15, 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.

CMPX Institutional Ownership Changes and 13F Activity Q1 2026 | InsiderSet