Compass Therapeutics (CMPX) Stock Chart & Stock Price History $2.95 -0.15 (-4.84%) Closing price 08/14/2025 04:00 PM EasternExtended Trading$2.98 +0.03 (+1.19%) As of 08:00 AM 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 Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Compass Therapeutics Stock Price Performance The Compass Therapeutics (CMPX) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 154.31%, with a year-to-date return of 103.45%. In the past month, the stock has decreased 1.01%, reflecting recent market activity. As of the latest close, Compass Therapeutics traded at $2.95 with a market cap of $407.94 million and volume of 2.04 million shares. Receive CMPX Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Compass Therapeutics and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance+9.26%1 Month Performance-1.01%3 Month Performance+46.04%Year-To-Date Performance+103.45%1 Year Performance+154.31% CMPX Stock Chart for Friday, August, 15, 2025 CMPX Chart by TradingView Compass Therapeutics Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization08/14/2025$3.10$2.95-4.84%$3.06$2.902.04 million shs$407.94 million08/13/2025$3.17$3.10-2.21%$3.31$3.017.37 million shs$428.67 million08/12/2025$3.34$3.17-5.09%$3.47$3.041.98 million shs$438.35 million08/11/2025$2.70$3.34+23.70%$3.38$2.661.93 million shs$461.87 million08/08/2025$2.78$2.70-2.88%$2.81$2.67568,412 shs$373.36 million08/07/2025$2.91$2.78-4.47%$2.92$2.74374,115 shs$384.42 million08/06/2025$2.93$2.91-0.68%$2.94$2.75802,889 shs$402.40 million08/05/2025$2.85$2.93+2.81%$3.03$2.821.45 million shs$405.17 million08/04/2025$2.95$2.85-3.39%$3.02$2.83813,662 shs$394.10 million08/01/2025$2.97$2.95-0.67%$2.97$2.80815,258 shs$407.93 million 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. 07/31/2025$3.05$2.97-2.62%$3.12$2.96696,674 shs$410.69 million07/30/2025$3.17$3.05-3.79%$3.35$3.02911,802 shs$421.76 million07/29/2025$3.20$3.17-0.94%$3.25$3.13605,431 shs$438.35 million07/28/2025$3.18$3.20+0.63%$3.26$3.16342,931 shs$442.50 million07/25/2025$3.16$3.18+0.63%$3.21$3.11594,165 shs$439.73 million07/24/2025$3.33$3.16-5.11%$3.37$3.13804,895 shs$436.97 million07/23/2025$3.07$3.33+8.47%$3.45$3.081.17 million shs$460.48 million07/22/2025$3.07$3.07$3.13$2.96527,627 shs$424.52 million07/21/2025$3.00$3.07+2.33%$3.14$2.99594,692 shs$424.52 million07/18/2025$3.15$3.00-4.76%$3.22$2.97662,402 shs$414.84 million07/17/2025$3.13$3.15+0.64%$3.27$3.101.24 million shs$435.59 million07/16/2025$2.98$3.13+5.03%$3.18$2.97721,949 shs$432.82 million07/15/2025$2.92$2.98+2.05%$3.08$2.861.11 million shs$412.08 million07/14/2025$2.70$2.92+8.15%$3.00$2.66906,937 shs$403.79 million Related Companies SDGR Stock Price Chart EVO Stock Price Chart JANX Stock Price Chart ETNB Stock Price Chart EWTX Stock Price Chart WVE Stock Price Chart ABCL Stock Price Chart HROW Stock Price Chart VERA Stock Price Chart ARDX Stock Price Chart Receive CMPX Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Compass Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 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