Quantum-Si (QSI) Stock Chart & Stock Price History $1.79 +0.03 (+1.70%) As of 06/12/2025 04:00 PM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Quantum-Si Stock Price Performance The Quantum-Si (QSI) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 24.31%, with a year-to-date return of -33.70%. In the past month, the stock has increased 22.60%, reflecting recent market activity. As of the latest close, Quantum-Si traded at $1.79 with a market cap of $328.46 million and volume of 9.31 million shares. Receive QSI 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+2.87%1 Month Performance+22.60%3 Month Performance+57.02%Year-To-Date Performance-33.70%1 Year Performance+24.31% QSI Stock Chart for Friday, June, 13, 2025 QSI 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 Capitalization06/12/2025$1.76$1.79+1.70%$1.90$1.739.31 million shs$328.46 million06/11/2025$1.70$1.76+3.53%$1.89$1.7111.18 million shs$322.96 million06/10/2025$1.71$1.70-0.58%$1.80$1.665.46 million shs$311.95 million06/09/2025$1.74$1.71-1.72%$1.80$1.683.85 million shs$313.78 million06/06/2025$1.60$1.74+8.75%$1.75$1.625.65 million shs$319.29 million06/05/2025$1.75$1.60-8.57%$1.73$1.577.30 million shs$293.60 million06/04/2025$1.76$1.75-0.57%$1.80$1.684.82 million shs$321.12 million06/03/2025$1.68$1.76+4.76%$1.82$1.676.68 million shs$322.96 million06/02/2025$1.66$1.68+1.20%$1.72$1.615.37 million shs$308.28 million05/30/2025$1.71$1.66-2.92%$1.69$1.597.57 million shs$304.01 million Get the Latest News and Ratings for QSI 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. 05/29/2025$1.78$1.71-3.93%$1.84$1.707.30 million shs$313.17 million05/28/2025$1.92$1.78-7.29%$1.91$1.7712.00 million shs$325.99 million05/27/2025$1.94$1.92-1.03%$2.15$1.8620.52 million shs$351.63 million05/26/2025$1.94$1.94$2.03$1.7031.51 million shs$355.29 million05/23/2025$1.74$1.94+11.49%$2.03$1.7031.51 million shs$355.29 million05/22/2025$1.48$1.74+17.97%$1.84$1.5325.81 million shs$318.66 million05/21/2025$1.68$1.48-12.20%$1.80$1.4521.03 million shs$270.13 million05/20/2025$1.41$1.68+19.15%$1.73$1.4625.71 million shs$307.68 million05/19/2025$1.48$1.41-4.73%$1.46$1.365.32 million shs$258.23 million05/16/2025$1.48$1.48$1.52$1.408.59 million shs$271.05 million05/15/2025$1.52$1.48-2.63%$1.55$1.458.69 million shs$271.05 million05/14/2025$1.46$1.52+4.11%$1.60$1.449.31 million shs$278.37 million05/13/2025$1.51$1.46-3.31%$1.59$1.437.00 million shs$267.38 million05/12/2025$1.26$1.51+19.84%$1.52$1.329.55 million shs$276.54 million Related Companies TXG Stock Chart TRNS Stock Chart EYPT Stock Chart ALNT Stock Chart CTKB Stock Chart LAB Stock Chart AEHR Stock Chart SENS Stock Chart MASS Stock Chart QTRX Stock Chart Receive QSI 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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