Cytosorbents (CTSO) Stock Chart & Stock Price History $0.94 -0.01 (-1.55%) Closing price 09/12/2025 04:00 PM EasternExtended Trading$0.94 +0.00 (+0.16%) As of 09/12/2025 04:53 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 Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Cytosorbents Stock Price Performance The Cytosorbents (CTSO) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 13.10%, with a year-to-date return of 3.13%. In the past month, the stock has decreased 19.09%, reflecting recent market activity. As of the latest close, Cytosorbents traded at $0.94 with a market cap of $58.90 million and volume of 69,510 shares. Five years ago, the stock traded at $8.28, representing a 88.67% decrease over that period. At the time, it had a market cap of $357.35 million and a volume of 302,622 shares. Receive CTSO Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Cytosorbents and its competitors with MarketBeat's FREE daily newsletter. Subscribe Now View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. 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Read our full terms of service and privacy policy. 5 Day Performance-0.72%1 Month Performance-19.09%3 Month Performance-13.90%Year-To-Date Performance+3.13%1 Year Performance-13.10%5 Year Performance-88.67% CTSO Stock Chart for Monday, September, 15, 2025 CTSO Chart by TradingView Cytosorbents 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 Capitalization09/12/2025$0.95$0.94-1.55%$0.97$0.9269,510 shs$58.90 million09/11/2025$0.95$0.95+0.85%$0.98$0.9343,947 shs$59.83 million09/10/2025$1.00$0.95-5.28%$1.00$0.9387,922 shs$59.33 million09/09/2025$0.98$1.00+1.59%$1.04$0.9883,184 shs$62.64 million09/08/2025$0.97$0.98+1.74%$1.02$0.9768,040 shs$61.66 million09/05/2025$0.98$0.97-1.01%$0.98$0.9427,740 shs$60.60 million09/04/2025$0.98$0.98-0.46%$0.99$0.9610,450 shs$61.22 million09/03/2025$0.95$0.98+3.14%$0.99$0.9472,560 shs$61.51 million09/02/2025$0.94$0.95+0.72%$0.98$0.9348,197 shs$59.64 million09/01/2025$0.94$0.94$0.95$0.9152,579 shs$59.21 million Get the Latest News and Ratings for CTSO and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Cytosorbents and its competitors with MarketBeat's FREE daily newsletter. 08/29/2025$0.94$0.94+0.84%$0.95$0.9152,579 shs$59.21 million08/28/2025$0.93$0.94+0.59%$0.96$0.9131,562 shs$58.71 million08/27/2025$0.93$0.93$0.96$0.9082,424 shs$58.37 million08/26/2025$0.91$0.93+2.62%$0.95$0.8873,630 shs$58.37 million08/25/2025$0.91$0.91-0.74%$0.97$0.85171,141 shs$56.88 million08/22/2025$0.84$0.91+8.19%$0.99$0.88349,614 shs$57.31 million08/21/2025$0.89$0.84-5.58%$0.93$0.83295,136 shs$52.97 million08/20/2025$1.08$0.89-17.23%$1.01$0.88688,906 shs$56.10 million08/19/2025$1.10$1.08-1.82%$1.12$1.0737,808 shs$67.78 million08/18/2025$1.16$1.10-5.17%$1.19$1.0990,231 shs$69.04 million08/15/2025$1.14$1.16+1.75%$1.16$1.1239,034 shs$72.80 million08/14/2025$1.08$1.14+5.56%$1.14$1.0377,880 shs$67.78 million Related Companies MGRM Stock Chart SI Stock Chart INGN Stock Chart STIM Stock Chart NNOX Stock Chart INFU Stock Chart CVRX Stock Chart ELMD Stock Chart NYXH Stock Chart SGHT Stock Chart Receive CTSO Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Cytosorbents and its competitors with MarketBeat's FREE daily newsletter. 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