Quantum-Si (QSIAW) Stock Chart & Stock Price History $0.85 +0.07 (+9.10%) As of 09:39 AM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisChartCompetitorsSEC FilingsShort InterestTrendsBuy This Stock Quantum-Si Stock Price Performance The Quantum-Si (QSIAW) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 364.01%, with a year-to-date return of -31.92%. In the past month, the stock has increased 157.80%, reflecting recent market activity. As of the latest close, Quantum-Si traded at $0.96 with a market cap of and volume of 318,860 shares. Receive QSIAW Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Quantum-Si and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance+84.20%1 Month Performance+157.80%3 Month Performance+39.62%Year-To-Date Performance-31.92%1 Year Performance+364.01% QSIAW Stock Chart for Thursday, May, 22, 2025 QSIAW Chart by TradingView Quantum-Si 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 Capitalization05/21/2025$0.78$0.96+23.06%$1.08$0.68318,860 shs$0.0005/20/2025$0.42$0.78+85.32%$0.95$0.41293,192 shs$0.0005/19/2025$0.46$0.42-8.90%$0.44$0.424,611 shs$0.0005/16/2025$0.49$0.46-5.70%$0.47$0.457,813 shs$0.0005/15/2025$0.48$0.49+2.06%$0.49$0.4526,296 shs$0.0005/14/2025$0.45$0.48+6.64%$0.49$0.4318,262 shs$0.0005/13/2025$0.50$0.45-10.34%$0.52$0.4421,835 shs$0.0005/12/2025$0.47$0.50+6.51%$0.53$0.4126,510 shs$0.0005/09/2025$0.38$0.47+25.68%$0.56$0.30101,256 shs$0.0005/08/2025$0.36$0.38+5.63%$0.38$0.3626,938 shs$0.00 Get the Latest News and Ratings for QSIAW and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Quantum-Si and its competitors with MarketBeat's FREE daily newsletter. 05/07/2025$0.35$0.36+2.31%$0.37$0.346,157 shs$0.0005/06/2025$0.35$0.35-0.86%$0.39$0.3621,879 shs$0.0005/05/2025$0.37$0.35-5.15%$0.37$0.3514,697 shs$0.0005/02/2025$0.35$0.37+5.43%$0.36$0.3416,145 shs$0.0005/01/2025$0.35$0.35$0.40$0.3520,584 shs$0.0004/30/2025$0.35$0.35-0.03%$0.38$0.352,181 shs$0.0004/29/2025$0.35$0.35+0.03%$0.37$0.3317,486 shs$0.0004/28/2025$0.33$0.35+6.06%$0.37$0.336,587 shs$0.0004/25/2025$0.35$0.33-6.12%$0.37$0.336,738 shs$0.0004/24/2025$0.38$0.35-6.79%$0.38$0.3319,252 shs$0.0004/23/2025$0.33$0.38+14.24%$0.39$0.3311,212 shs$0.0004/22/2025$0.35$0.33-5.69%$0.40$0.3213,416 shs$0.0004/21/2025$0.34$0.35+4.48%$0.37$0.342,508 shs$0.00 Related Companies HTGMQ Stock Price Chart OLITW Stock Price Chart PRENW Stock Price Chart SMAPW Stock Price Chart TT Stock Price Chart KEYS Stock Price Chart VLTO Stock Price Chart FTV Stock Price Chart TER Stock Price Chart RVTY Stock Price Chart Receive QSIAW Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Quantum-Si and its competitors with MarketBeat's FREE daily newsletter. 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