Cytosorbents (CTSO) Stock Chart & Stock Price History $0.98 +0.03 (+3.14%) Closing price 10/8/2025 03:59 PM EasternExtended Trading$0.97 0.00 (-0.21%) As of 10/8/2025 07:04 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 13.72%, with a year-to-date return of 7.14%. In the past month, the stock has decreased 2.30%, reflecting recent market activity. As of the latest close, Cytosorbents traded at $0.98 with a market cap of $61.19 million and volume of 101,645 shares. Five years ago, the stock traded at $8.22, representing a 88.14% decrease over that period. At the time, it had a market cap of $354.76 million and a volume of 221,994 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-0.91%1 Month Performance-2.30%3 Month Performance-12.16%Year-To-Date Performance+7.14%1 Year Performance-13.72%5 Year Performance-88.14% CTSO Stock Chart for Thursday, October, 9, 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 Capitalization10/08/2025$0.95$0.98+3.14%$0.99$0.94101,645 shs$61.19 million10/07/2025$0.94$0.95+0.56%$1.00$0.9419,242 shs$59.33 million10/06/2025$0.98$0.94-4.47%$0.99$0.9454,844 shs$59.00 million10/03/2025$0.99$0.98-0.10%$1.02$0.95100,953 shs$61.76 million10/02/2025$0.93$0.99+5.57%$0.99$0.93154,945 shs$61.82 million10/01/2025$0.93$0.93-0.12%$0.95$0.9129,376 shs$58.56 million09/30/2025$0.93$0.93+0.94%$0.94$0.9211,020 shs$58.63 million09/29/2025$0.93$0.93-0.88%$0.95$0.9156,788 shs$58.08 million09/26/2025$0.93$0.93+0.81%$0.95$0.9154,640 shs$58.59 million09/25/2025$0.95$0.93-2.82%$0.95$0.9244,561 shs$58.12 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. 09/24/2025$0.96$0.95-0.81%$0.97$0.9268,859 shs$59.81 million09/23/2025$0.97$0.96-0.54%$0.99$0.9674,857 shs$60.30 million09/22/2025$0.94$0.97+2.65%$0.97$0.90186,825 shs$60.63 million09/19/2025$0.93$0.94+0.88%$0.95$0.93122,945 shs$59.06 million09/18/2025$0.90$0.93+3.17%$0.95$0.9138,036 shs$58.55 million09/17/2025$0.91$0.90-0.54%$0.95$0.90165,955 shs$56.75 million09/16/2025$0.92$0.91-0.68%$0.92$0.87126,255 shs$57.06 million09/15/2025$0.94$0.92-2.47%$0.94$0.9077,070 shs$57.45 million09/12/2025$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 million Related Companies INGN Stock Chart NNOX Stock Chart INFU Stock Chart CV Stock Chart ELMD Stock Chart BSGM Stock Chart CVRX Stock Chart KRMD Stock Chart SGHT Stock Chart STIM 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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