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Compass Therapeutics (CMPX) Institutional Ownership

Compass Therapeutics logo
$0.99 +0.01 (+0.98%)
Closing price 10/9/2026 04:00 PM Eastern
Extended Trading
$1.01 +0.02 (+1.61%)
As of 10/9/2026 07:59 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 Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Compass Therapeutics (NASDAQ:CMPX)

Current
Institutional Ownership
Percentage
68.43%
Number of
Institutional Buyers
(last 12 months)
111
Total
Institutional Inflows
(last 12 months)
$239.55M
Number of
Institutional Sellers
(last 12 months)
26
Total
Institutional Outflows
(last 12 months)
$39.80M
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CMPX Institutional Buying and Selling by Quarter

Compass Therapeutics Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026Sequoia Financial Advisors LLC44,980$99K0.0%+189.5%0.025%
9/9/2026WINTON GROUP Ltd24,900$55K0.0%N/A0.014%
9/9/2026Engineers Gate Manager LP26,335$58K0.0%-63.3%0.015%
9/9/2026Squarepoint Ops LLC1,007,507$2.21M0.0%+1,906.9%0.559%
9/8/2026Arizona State Retirement System23,604$52K0.0%-22.9%0.013%
8/25/2026VIRGINIA RETIREMENT SYSTEMS ET Al32,300$71K0.0%N/A0.018%
8/23/2026HB Wealth Management LLC13,058$29K0.0%N/A0.007%
8/22/2026Seven Fleet Capital Management LP233,066$510K0.1%-75.2%0.129%
8/21/2026AXQ Capital LP42,118$92K0.0%+68.1%0.023%
8/20/2026Montanova Capital LLC14,101,159$30.88M0.5%-1.4%7.830%
8/20/2026Two Sigma Securities LLC29,451$64K0.0%N/A0.016%
8/19/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC177,814$389K0.0%+27.3%0.099%
8/19/2026Wellington Management Group LLP378,687$829K0.0%+5.2%0.210%
8/18/2026Palo Alto Investors LP5,831,813$12.77M0.0%N/A3.238%
8/17/2026Seven Fleet Capital Management LP233,066$510.42K0.0%N/A0.129%
8/17/2026Artia Global Partners LP383,200$839K0.2%N/A0.213%
8/17/2026Bank of America Corp DE566,919$1.24M0.0%N/A0.315%
8/15/2026Jupiter Topco LLC55,600$121K0.0%N/A0.031%
8/14/2026ADAR1 Capital Management LLC122,132$267K0.0%N/A0.068%
8/14/2026Canada Pension Plan Investment Board160,900$352K0.0%N/A0.089%
8/14/2026Legal & General Group Plc75,103$164K0.0%N/A0.042%
8/14/2026The Manufacturers Life Insurance Company68,217$149K0.0%N/A0.038%
8/14/2026Algert Global LLC308,110$675K0.0%+737.7%0.171%
8/13/2026Connor Clark & Lunn Investment Management Ltd.523,777$1.15M0.0%N/A0.291%
8/12/2026Quantbot Technologies LP60,826$133K0.0%N/A0.034%
8/12/2026Ieq Capital LLC122,948$269K0.0%N/A0.068%
8/11/2026E Fund Management Co. Ltd.26,808$59K0.0%N/A0.015%
8/7/2026BlackRock Inc.11,281,781$24.71M0.0%N/A6.265%
8/7/2026Deutsche Bank AG134,350$294K0.0%N/A0.075%
8/7/2026Simplicity Wealth LLC36,480$80K0.0%N/A0.020%
8/6/2026Bank of New York Mellon Corp351,032$769K0.0%N/A0.195%
8/6/2026State of Wyoming14,065$31K0.0%N/A0.008%
8/6/2026GSA Capital Partners LLP70,179$154K0.0%N/A0.039%
8/3/2026Walleye Trading LLC25,000$55K0.0%N/A0.014%
7/10/2026Wealthcare Advisory Partners LLC60,962$134K0.0%N/A0.034%
7/9/2026Wealthcare Capital Partners LLC19,654$43K0.0%N/A0.011%
6/4/2026Seven Fleet Capital Management LP940,538$4.98M1.6%+65.4%0.522%
6/3/2026DV Trading LLC423,566$2.24M0.1%+1,649.8%0.235%
6/3/2026Parallel Advisors LLC5,250$28K0.0%N/A0.003%
5/19/2026Bank of America Corp DE865,613$4.58M0.0%+224.9%0.481%
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5/19/2026Janus Henderson Group PLC55,600$294K0.0%N/A0.031%
5/18/2026California State Teachers Retirement System112,316$594K0.0%+1,294.2%0.062%
5/18/2026Rock Springs Capital Management LP3,305,308$17.49M1.0%-15.8%1.835%
5/16/2026The Manufacturers Life Insurance Company67,466$357K0.0%+67.3%0.037%
5/14/2026Monashee Investment Management LLC258,865$1.37M0.7%-74.1%0.144%
5/8/2026PNC Financial Services Group Inc.11,038$58K0.0%+2,572.6%0.006%
5/7/2026Dimensional Fund Advisors LP439,784$2.32M0.0%+28.7%0.244%
5/7/2026Swiss National Bank220,700$1.17M0.0%N/A0.123%
5/6/2026Independent Financial Group LLC22,779$121K0.0%N/A0.013%
5/5/2026Bank of New York Mellon Corp297,301$1.57M0.0%-4.9%0.165%
5/1/2026Simplicity Wealth LLC28,350$150K0.0%-16.3%0.016%
4/28/2026Abel Hall LLC10,524$56K0.0%-54.0%0.006%
4/27/2026Y Intercept Hong Kong Ltd828,879$4.39M0.1%+79.3%0.460%
4/22/2026Pictet Asset Management Holding SA14,432$76K0.0%N/A0.008%
4/16/2026SG Americas Securities LLC47,670$252K0.0%-55.3%0.026%
3/3/2026Caitong International Asset Management Co. Ltd24,579$132K0.0%N/A0.014%
2/26/2026Seven Fleet Capital Management LP568,747$3.05M2.3%N/A0.320%
2/19/2026Invesco Ltd.63,901$343K0.0%+5.3%0.036%
2/18/2026XTX Topco Ltd115,634$621K0.0%+582.2%0.065%
2/18/2026Ikarian Capital LLC800,000$4.30M0.3%N/A0.450%
2/18/2026Virtus Investment Advisers LLC51,556$277K0.1%N/A0.029%
2/18/2026SummitTX Capital L.P.81,449$437K0.0%N/A0.046%
2/18/2026Tang Capital Management LLC16,790,809$90.17M4.5%-0.1%9.440%
2/18/2026Suvretta Capital Management LLC14,182,379$76.16M1.6%+0.6%7.974%
2/18/2026Quadrature Capital Ltd12,293$66K0.0%-74.1%0.007%
2/18/2026Millennium Management LLC3,109,286$16.70M0.0%-4.0%1.748%
2/18/2026Balyasny Asset Management L.P.1,593,275$8.56M0.0%-43.6%0.896%
2/18/2026Boothbay Fund Management LLC205,024$1.10M0.0%N/A0.115%
2/18/2026BVF Inc. IL7,764,842$41.70M1.4%+63.5%4.366%
2/17/2026Logos Global Management LP1,150,000$6.18M0.4%-43.9%0.647%
2/17/2026ADAR1 Capital Management LLC139,000$746K0.1%+178.0%0.078%
2/17/2026Schonfeld Strategic Advisors LLC452,442$2.43M0.0%-5.0%0.254%
2/17/2026AQR Capital Management LLC155,218$834K0.0%+162.4%0.087%
2/17/2026Braidwell LP2,786,778$14.97M0.5%N/A1.567%
2/17/2026Abel Hall LLC22,882$123K0.0%N/A0.013%
2/17/2026Price T Rowe Associates Inc. MD70,488$379K0.0%+24.6%0.040%
2/17/2026Rock Springs Capital Management LP3,927,202$21.09M1.1%-12.2%2.208%
2/17/2026Adage Capital Partners GP L.L.C.4,436,500$23.82M0.0%-14.5%2.494%
2/17/2026Russell Investments Group Ltd.11,558$62K0.0%+48.5%0.006%
2/17/2026Atom Investors LP77,281$415K0.0%-27.6%0.043%
2/17/2026State of Wisconsin Investment Board185,423$996K0.0%+347.9%0.104%
2/17/2026Graham Capital Management L.P.53,427$287K0.0%N/A0.030%
2/17/2026Persistent Asset Partners Ltd57,253$307K0.1%N/A0.032%
2/16/2026Squarepoint Ops LLC126,192$678K0.0%+43.6%0.071%
2/16/2026Sofinnova Investments Inc.3,365,446$18.07M0.7%+65.9%1.892%
2/16/2026NEXTBio Capital Management LP1,114,005$5.98M3.5%N/A0.626%
2/16/2026Barclays PLC594,776$3.19M0.0%+167.4%0.334%
2/13/2026Marshall Wace LLP1,263,647$6.79M0.0%N/A0.710%
2/13/2026The Manufacturers Life Insurance Company 40,325$217K0.0%+21.6%0.023%
2/13/2026Stifel Financial Corp23,973$129K0.0%N/A0.013%
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2/13/2026Rafferty Asset Management LLC151,743$815K0.0%+113.8%0.085%
2/13/2026Birchview Capital LP1,592,938$8.55M5.0%+82.5%0.896%
2/13/2026Charles Schwab Investment Management Inc.410,157$2.20M0.0%+22.3%0.231%
2/13/2026Police & Firemen s Retirement System of New Jersey35,503$191K0.0%+25.3%0.020%
2/13/2026State Street Corp4,890,525$26.26M0.0%+57.4%2.750%
2/13/2026Caitong International Asset Management Co. Ltd17,879$96K0.3%N/A0.010%
2/13/2026Wells Fargo & Company MN144,798$778K0.0%+112.4%0.081%
2/12/2026Jane Street Group LLC70,063$376K0.0%+57.5%0.039%
2/12/2026MetLife Investment Management LLC73,985$397K0.0%+26.8%0.042%
2/12/2026Dimensional Fund Advisors LP341,596$1.84M0.0%+94.6%0.192%


CMPX Institutional Ownership - Frequently Asked Questions

During the previous two years, 155 institutional investors and hedge funds held shares of Compass Therapeutics. The most heavily invested institutionals were Tang Capital Management LLC ($90.17M), Suvretta Capital Management LLC ($76.16M), BVF Inc. IL ($41.70M), Orbimed Advisors LLC ($39.57M), Vivo Capital LLC ($33.41M), Montanova Capital LLC ($30.88M), and State Street Corp ($26.26M).Learn more on Compass Therapeutics' institutional investors.

68.43% of Compass Therapeutics' stock is owned by institutional investors. Learn more on CMPX's institutional investor holdings.

Of the 134 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: BlackRock Inc. ($11.28M), Enavate Sciences GP LLC ($7.79M), Suvretta Capital Management LLC ($7.03M), Vivo Capital LLC ($5.99M), Palo Alto Investors LP ($5.83M), Tang Capital Management LLC ($4.09M), and BVF Inc. IL ($3.01M).

Institutional investors have bought a total of 65,062,803 shares in the last 24 months. This purchase volume represents approximately $239.55M in transactions.

Of the 26 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: JPMorgan Chase & Co. ($1.38M), Balyasny Asset Management L.P. ($1.23M), Rock Springs Capital Management LP ($1.17M), Monashee Investment Management LLC ($991.14K), Logos Global Management LP ($900K), Adage Capital Partners GP L.L.C. ($750K), and Seven Fleet Capital Management LP ($707.47K).

Institutional investors have sold a total of 8,240,929 shares in the last 24 months. This volume of shares sold represents approximately $39.80M in transactions.


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Institutional ownership data for NASDAQ:CMPX is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.
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