Compass Therapeutics (CMPX) Institutional Ownership $3.49 +0.21 (+6.40%) Closing price 04:00 PM EasternExtended Trading$3.39 -0.10 (-2.87%) As of 07:21 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Ownership Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for Compass Therapeutics (NASDAQ:CMPX)CurrentInstitutional OwnershipPercentage68.43%Number ofInstitutional Buyers(last 12 months)49TotalInstitutional Inflows(last 12 months)$35.27MNumber ofInstitutional Sellers(last 12 months)33TotalInstitutional Outflows(last 12 months)$50.63M Get CMPX Insider Trade Alerts Want to know when executives and insiders are buying or selling Compass Therapeutics stock? 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Skip Chart & View Institutional Buying and Selling Data CMPX Institutional Buying and Selling by Quarter Compass Therapeutics Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails8/19/2025 Marex Group plc23,600$61K0.0%N/A0.017% 8/15/2025 Bank of America Corp DE32,549$85K0.0%-91.5%0.024% 8/15/2025 Adage Capital Partners GP L.L.C.4,424,868$11.51M0.0%+11.3%3.200% 8/14/2025 MPM Bioimpact LLC5,622,505$14.62M2.5%-33.4%4.066% 8/14/2025 Orbimed Advisors LLC15,219,994$39.57M1.1%-31.9%11.006% 8/14/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.50,164$130K0.0%-17.8%0.036% 8/14/2025 The Manufacturers Life Insurance Company 35,553$92K0.0%-10.0%0.026% 8/14/2025 Vivo Capital LLC6,043,466$15.71M1.6%+70.0%4.370% 8/13/2025 Invesco Ltd.58,735$153K0.0%+58.1%0.042% 8/13/2025 Panagora Asset Management Inc.15,840$41K0.0%-90.7%0.011% Get the Latest News and Ratings for CMPX and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Compass Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 8/12/2025 XTX Topco Ltd32,415$84K0.0%N/A0.023% 8/12/2025 American Century Companies Inc.27,607$72K0.0%-62.5%0.020% 8/12/2025 Rhumbline Advisers113,487$295K0.0%-5.5%0.082% 8/12/2025 JPMorgan Chase & Co.2,125,717$5.53M0.0%-2.7%1.537% 8/8/2025 Intech Investment Management LLC44,223$115K0.0%-43.5%0.032% 8/8/2025 Creative Planning11,484$30K0.0%N/A0.008% 8/8/2025 SG Americas Securities LLC372,681$969K0.0%-60.4%0.270% 8/8/2025 Geode Capital Management LLC2,319,132$6.03M0.0%-1.9%1.677% 7/25/2025 Sequoia Financial Advisors LLC16,485$43K0.0%-41.0%0.012% 7/22/2025 Simplicity Wealth LLC84,636$220K0.0%+81.8%0.061% 6/27/2025 Goldman Sachs Group Inc.233,522$444K0.0%-40.2%0.169% 5/29/2025 Rhumbline Advisers120,029$228K0.0%-7.0%0.087% 5/28/2025 Strs Ohio17,900$34K0.0%N/A0.013% 5/16/2025 Goldman Sachs Group Inc.233,522$444K0.0%-40.2%0.169% 5/16/2025 Adage Capital Partners GP L.L.C.3,975,000$7.55M0.0%-33.7%2.875% 5/15/2025 Birchview Capital LP24,000$46K0.0%N/A0.017% 5/15/2025 MPM Bioimpact LLC8,442,783$16.04M2.8%-1.5%6.105% 5/15/2025 Baker BROS. Advisors LP547,498$1.04M0.0%-64.9%0.396% 5/15/2025 Propel Bio Management LLC228,317$434K0.5%N/A0.165% 5/14/2025 MetLife Investment Management LLC37,167$71K0.0%-41.1%0.027% 5/14/2025 Walleye Trading LLC25,000$48K0.0%N/A0.018% 5/14/2025 Walleye Capital LLC52,478$100K0.0%N/A0.038% 5/14/2025 Wellington Management Group LLP222,505$423K0.0%N/A0.161% 5/13/2025 American Century Companies Inc.73,682$140K0.0%N/A0.053% 5/12/2025 Nuveen LLC304,504$579K0.0%N/A0.220% 5/9/2025 Deutsche Bank AG102,041$194K0.0%N/A0.074% 5/9/2025 Charles Schwab Investment Management Inc.297,880$566K0.0%+4.1%0.215% 5/1/2025 New York State Common Retirement Fund30,407$58K0.0%-20.4%0.022% 4/29/2025 Bank of New York Mellon Corp243,565$463K0.0%+2.3%0.176% 4/28/2025 Vontobel Holding Ltd.29,882$57K0.0%N/A0.022% $100 Trillion “AI Metal” Found in American Ghost Town (Ad)Jeff Brown recently traveled to a ghost town in the middle of an American desert… To investigate what could be the biggest technology story of this decade. In short, he believes what he's holding in his hand is the key to the $100 trillion AI boom… And only one company here in the U.S. can mine this obscure metal.Click here to get the details on this virtual monopoly.4/21/2025 Catalina Capital Group LLC16,938$32K0.0%-65.4%0.012% 4/17/2025 Exchange Traded Concepts LLC54,207$103K0.0%-44.6%0.039% 4/15/2025 SG Americas Securities LLC940,784$1.79M0.0%+138.2%0.680% 4/15/2025 Simplicity Wealth LLC46,543$88K0.0%N/A0.034% 4/8/2025 Rhumbline Advisers120,029$228K0.0%-7.0%0.087% 2/17/2025 Squarepoint Ops LLC24,072$35K0.0%N/A0.017% 2/17/2025 Two Sigma Advisers LP51,000$74K0.0%-41.0%0.037% 2/17/2025 Two Sigma Investments LP145,238$211K0.0%-24.8%0.106% 2/17/2025 Tang Capital Management LLC5,900,000$8.56M0.6%+225.4%4.288% 2/17/2025 ProShare Advisors LLC28,722$42K0.0%+49.0%0.021% 2/17/2025 MPM Bioimpact LLC8,567,896$12.42M1.8%+51.9%6.227% 2/17/2025 Millennium Management LLC33,857$49K0.0%-80.0%0.025% 2/17/2025 Enavate Sciences GP LLC7,788,150$11.29M8.1%N/A5.660% 2/17/2025 DAFNA Capital Management LLC158,394$230K0.1%+35.5%0.115% 2/17/2025 Cantor Fitzgerald L. P.100,000$145K0.0%-44.4%0.073% 2/17/2025 Bank of America Corp DE113,020$164K0.0%+36.6%0.082% 2/17/2025 BNP Paribas Financial Markets18,562$27K0.0%N/A0.013% 2/14/2025 Monashee Investment Management LLC448,164$650K0.1%-10.4%0.326% 2/14/2025 Northern Trust Corp801,225$1.16M0.0%-5.1%0.582% 2/14/2025 Voya Investment Management LLC32,561$47K0.0%-13.5%0.024% 2/14/2025 Blue Owl Capital Holdings LP2,954,712$4.28M1.0%+2.6%2.147% 2/14/2025 Adage Capital Partners GP L.L.C.5,994,810$8.69M0.0%-46.1%4.357% 2/14/2025 Price T Rowe Associates Inc. MD46,942$69K0.0%+31.8%0.034% 2/14/2025 Rock Springs Capital Management LP5,779,575$8.38M0.3%+2.7%4.201% 2/14/2025 Tower Research Capital LLC TRC17,251$25K0.0%+298.0%0.013% 2/14/2025 MetLife Investment Management LLC63,141$92K0.0%+200.3%0.046% 2/13/2025 XTX Topco Ltd52,754$76K0.0%+160.9%0.038% 2/13/2025 Mariner LLC20,673$30K0.0%N/A0.015% 2/13/2025 Barclays PLC192,766$279K0.0%+13.2%0.140% 2/13/2025 Renaissance Technologies LLC278,600$404K0.0%+25.2%0.202% 2/13/2025 Invesco Ltd.39,483$57K0.0%+11.3%0.029% 2/13/2025 Wells Fargo & Company MN59,860$87K0.0%+27.8%0.044% 2/12/2025 Geode Capital Management LLC2,334,171$3.39M0.0%+1.1%1.696% 2/12/2025 Alliancebernstein L.P.21,440$31K0.0%-11.3%0.016% 2/12/2025 JPMorgan Chase & Co.272,328$395K0.0%+512.5%0.198% 2/11/2025 Corebridge Financial Inc.50,704$74K0.0%-7.0%0.037% 2/11/2025 LPL Financial LLC45,000$65K0.0%-10.0%0.033% 2/11/2025 Intech Investment Management LLC51,924$75K0.0%+218.7%0.038% 2/10/2025 Connor Clark & Lunn Investment Management Ltd.156,871$227K0.0%-32.4%0.114% 2/7/2025 Sequoia Financial Advisors LLC30,876$45K0.0%N/A0.022% 2/7/2025 Independent Advisor Alliance17,948$26K0.0%N/A0.013% 2/4/2025 Bank of New York Mellon Corp237,975$345K0.0%+2.6%0.173% 1/30/2025 Rhumbline Advisers129,116$187K0.0%+3.1%0.094% 1/27/2025 Bleakley Financial Group LLC39,993$58K0.0%+250.7%0.029% 1/24/2025 Catalina Capital Group LLC48,964$71K0.0%N/A0.036% 1/17/2025 SG Americas Securities LLC395,017$573K0.0%+921.6%0.287% 11/19/2024 Barclays PLC170,245$314K0.0%+195.4%0.124% 11/16/2024 Geode Capital Management LLC2,309,778$4.25M0.0%+0.8%1.679% 11/15/2024 Barclays PLC170,245$314K0.0%+195.4%0.124% 11/15/2024 XTX Topco Ltd20,221$37K0.0%N/A0.015% An $8 trillion-dollar discovery 17,000 ft underwater (Ad)A strange rock pulled from the ocean floor may hold the key to a $16 trillion resource boom. Inside it: materials critical for AI chips, EV batteries, smartphones, and advanced weapons systems. While few people know about these metals, global powers—including the U.S., China, and Russia—are racing to secure them. And one tiny public company, recently backed by the U.S. government, holds mining rights to over 340 million tons… and near-monopoly access to the richest zone.See the name and ticker behind America’s $16 trillion resource push.11/15/2024 Jane Street Group LLC73,487$135K0.0%-52.0%0.053% 11/15/2024 Janus Henderson Group PLC1,843,286$3.36M0.0%-64.7%1.340% 11/13/2024 FMR LLC4,136,273$7.61M0.0%+0.1%3.006% 11/13/2024 The Manufacturers Life Insurance Company42,671$79K0.0%N/A0.031% 11/9/2024 Intech Investment Management LLC16,292$30K0.0%N/A0.012% 11/1/2024 Rovin Capital UT ADV13,495$25K0.0%N/A0.010% 10/10/2024 Exchange Traded Concepts LLC97,931$180K0.0%-12.6%0.071% 10/3/2024 SG Americas Securities LLC38,665$71K0.0%+16.6%0.028% 9/16/2024 Cubist Systematic Strategies LLC40,701$41K0.0%N/A0.030% 8/14/2024 Cubist Systematic Strategies LLC40,701$41K0.0%N/A0.030% (Data available from 1/1/2016 forward) CMPX Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of CMPX shares? During the previous two years, 83 institutional investors and hedge funds held shares of Compass Therapeutics. The most heavily invested institutionals were Orbimed Advisors LLC ($39.57M), Vivo Capital LLC ($15.71M), MPM Bioimpact LLC ($14.62M), Blackstone Inc. ($12.19M), Adage Capital Partners GP L.L.C. ($11.51M), Enavate Sciences GP LLC ($11.29M), and Tang Capital Management LLC ($8.56M).Learn more on Compass Therapeutics' institutional investors. What percentage of Compass Therapeutics' stock is owned by institutional investors? 68.43% of Compass Therapeutics' stock is owned by institutional investors. Learn more on CMPX's institutional investor holdings. Which institutional investors have been buying Compass Therapeutics' stock? Of the 62 institutional investors that purchased Compass Therapeutics' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Enavate Sciences GP LLC ($7.79M), Tang Capital Management LLC ($4.09M), Opaleye Management Inc. ($3.17M), MPM Bioimpact LLC ($2.93M), Vivo Capital LLC ($2.49M), SG Americas Securities LLC ($955.26K), and Adage Capital Partners GP L.L.C. ($579.87K). How much institutional buying is happening at Compass Therapeutics? Institutional investors have bought a total of 21,289,510 shares in the last 24 months. This purchase volume represents approximately $35.27M in transactions. Which of Compass Therapeutics' major shareholders have been selling company stock? Of the 33 institutional investors that sold Compass Therapeutics' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Adage Capital Partners GP L.L.C. ($7.16M), Orbimed Advisors LLC ($7.14M), Janus Henderson Group PLC ($3.37M), MPM Bioimpact LLC ($2.95M), Baker BROS. Advisors LP ($1.01M), SG Americas Securities LLC ($568.10K), and Bank of America Corp DE ($350.95K). How much institutional selling is happening at Compass Therapeutics? Institutional investors have sold a total of 23,939,760 shares in the last 24 months. This volume of shares sold represents approximately $50.63M in transactions. 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