COSCIENS Biopharma (CSCI) Stock Chart & Stock Price History $3.48 -0.08 (-2.36%) Closing price 08/14/2025 03:41 PM EasternExtended Trading$3.80 +0.32 (+9.18%) As of 07:49 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 AnalysisChartCompetitorsEarningsHeadlinesSEC FilingsTrendsBuy This Stock COSCIENS Biopharma Stock Price Performance The COSCIENS Biopharma (CSCI) stock chart highlights key performance trends across multiple timeframes. Since the beginning of the year, the stock increased 25.49%. In the past month, the stock has increased 1.16%, reflecting recent market activity. As of the latest close, COSCIENS Biopharma traded at $3.48 with a market cap of $10.94 million and volume of 1,491 shares. 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Email Address 5 Day Performance-2.74%1 Month Performance+1.16%3 Month Performance+4.07%Year-To-Date Performance+25.49% CSCI Stock Chart for Friday, August, 15, 2025 CSCI Chart by TradingView COSCIENS Biopharma 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$3.50$3.48-0.69%$3.51$3.501,491 shs$10.94 million08/13/2025$3.56$3.50-1.69%$3.51$3.501,491 shs$11.03 million08/12/2025$3.59$3.56-0.70%$3.63$3.471,578 shs$11.21 million08/11/2025$3.57$3.59+0.31%$3.85$3.581,872 shs$11.28 million08/08/2025$3.44$3.57+3.87%$3.60$3.601,332 shs$11.25 million08/07/2025$3.77$3.44-8.73%$3.81$3.362,899 shs$10.84 million08/06/2025$3.89$3.77-3.11%$4.04$3.774,545 shs$11.88 million08/05/2025$3.95$3.89-1.49%$3.85$3.811,002 shs$12.25 million08/04/2025$3.86$3.95+2.46%$4.07$3.893,442 shs$12.44 million08/01/2025$3.91$3.86-1.41%$3.85$3.813,793 shs$12.14 million Get the Latest News and Ratings for CSCI and Related StocksEnter your email address below to receive the latest news and analysts' ratings for COSCIENS Biopharma and its competitors with MarketBeat's FREE daily newsletter. 07/31/2025$3.81$3.91+2.73%$3.90$3.89956 shs$12.32 million07/30/2025$3.86$3.81-1.42%$3.80$3.662,765 shs$11.98 million07/29/2025$3.81$3.86+1.34%$3.91$3.90651 shs$12.16 million07/28/2025$3.94$3.81-3.20%$3.99$3.911,650 shs$12.00 million07/25/2025$3.96$3.94-0.61%$3.92$3.901,107 shs$12.40 million07/24/2025$4.15$3.96-4.58%$4.05$3.894,495 shs$12.46 million07/23/2025$4.15$4.15+0.12%$4.20$3.968,296 shs$13.07 million07/22/2025$4.24$4.15-2.22%$4.24$4.052,046 shs$13.06 million07/21/2025$4.33$4.24-2.10%$4.30$4.193,577 shs$13.34 million07/18/2025$4.05$4.33+6.91%$4.40$4.0110,314 shs$13.64 million07/17/2025$3.77$4.05+7.31%$4.10$3.6419,806 shs$12.75 million07/16/2025$3.44$3.77+9.84%$3.89$3.4519,334 shs$11.89 million07/15/2025$3.62$3.44-5.08%$3.63$3.472,042 shs$10.81 million07/14/2025$3.44$3.62+5.11%$3.65$3.314,118 shs$11.39 million Related Companies ALGS Stock Chart IPSC Stock Chart OSTX Stock Chart KLRS Stock Chart KALA Stock Chart XCUR Stock Chart PRLD Stock Chart CVM Stock Chart NRXP Stock Chart VTVT Stock Chart Receive CSCI Stock News and Ratings via EmailSign-up to receive the latest news and ratings for COSCIENS Biopharma and its competitors with MarketBeat's FREE daily newsletter. 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