Compare Stocks Compare stocks with our powerful stock comparison tool. Analyze fundamentals, price performance, and key financial indicators to make informed investment decisions. Our tool lets you compare up to ten stocks side by side based on Performance Charts, Price & Volume, MarketRank™, Analyst Ratings, Sales & Book Value, Profitability & Earnings, Dividends, Debt, Ownership, Headlines, and more. Simply enter up to ten stock symbols (e.g., BAC, JPM, WFC, C, GS) to get started and uncover top investment opportunities. Stocks to Compare Sections All Sections Selected Performance Chart Price & Volume MarketRank Analyst Ratings Sales & Book Value Profitability & Earnings Dividends Debt Ownership Miscellaneous Headlines About Compare NASDAQ:QSI On This Page Performance ChartPrice & VolumeMarketRank™Analyst RatingsSales & Book ValueProfitability & EarningsDividendsDebtOwnershipMiscellaneousHeadlinesAbout Comparison Ideas Stock Ideas Comparative Price Performance Over Time1 day7 days30 days90 days365 daysCompare Price & VolumeCompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's VolumeQSIQuantum-Si$0.86-0.5%$0.97$0.69▼$3.10$188.62M3.24.62 million shs2.25 million shs10 Stocks Powering The Next AI Boom The AI boom is creating opportunities across semiconductors, cloud computing, enterprise software, infrastructure, cybersecurity, and automation. Inside this report, you’ll find 10 companies positioned to benefit as artificial intelligence moves from hype to real-world deployment and becomes a core growth driver for corporate America.Get This Free ReportCompare Price PerformanceCompany1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year PerformanceQSIQuantum-Si-0.36%-5.80%-8.50%-17.50%-49.93%Compare Price & VolumeCompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's VolumeQSIQuantum-Si$0.86-0.5%$0.97$0.69▼$3.10$188.62M3.24.62 million shs2.25 million shs10 Stocks Powering The Next AI Boom The AI boom is creating opportunities across semiconductors, cloud computing, enterprise software, infrastructure, cybersecurity, and automation. Inside this report, you’ll find 10 companies positioned to benefit as artificial intelligence moves from hype to real-world deployment and becomes a core growth driver for corporate America.Get This Free ReportCompare Price PerformanceCompany1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year PerformanceQSIQuantum-Si-0.36%-5.80%-8.50%-17.50%-49.93%Compare Analyst ForecastsCompanyConsensus Rating ScoreConsensus RatingConsensus Price Target% Upside from Current PriceQSIQuantum-Si 1.50Reduce$1.0016.01% UpsideCurrent Analyst Ratings BreakdownLatest QSI Analyst RatingsDateCompanyBrokerageActionRatingPrice TargetDetails7/8/2026QSIQuantum-Si Weiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingDowngradeSell (D-) ➝ Sell (E+)6/24/2026QSIQuantum-Si Weiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingReiterated RatingSell (D-)(Data available from 7/15/2023 forward. View 10+ years of historical ratings with our analyst ratings screener.)Compare Sales & Book ValueCompanyAnnual RevenuePrice/SalesCashflowPrice/CashBook ValuePrice/BookQSIQuantum-Si$2.44M76.93N/AN/A$1.02 per share0.85Compare Profitability & EarningsCompanyNet IncomeEPSTrailing P/E RatioForward P/E RatioP/E GrowthNet MarginsReturn on Equity (ROE)Return on Assets (ROA)Next Earnings DateQSIQuantum-Si-$101.34M-$0.51N/AN/AN/A-5,605.88%-47.35%-42.66%8/4/2026 (Estimated)Latest QSI EarningsDateQuarterCompanyConsensus EstimateReported EPSBeat/MissGap EPSRevenue EstimateActual RevenueDetails8/4/2026Q2 2026QSIQuantum-Si-$0.13N/AN/AN/A$0.30 millionN/A5/7/2026Q1 2026QSIQuantum-Si-$0.12-$0.10+$0.02-$0.10$0.30 million$0.26 millionCompare DividendsCompanyAnnual PayoutDividend Yield5-Year Annualized Dividend GrowthPayout RatioYears of Consecutive GrowthQSIQuantum-SiN/AN/AN/AN/AN/ACompare DebtCompanyDebt-to-Equity RatioCurrent RatioQuick RatioQSIQuantum-SiN/A12.6012.40Compare OwnershipInstitutional OwnershipCompanyInstitutional OwnershipQSIQuantum-Si39.90%Insider OwnershipCompanyInsider OwnershipQSIQuantum-Si22.04%Compare Miscellaneous StatsCompanyEmployeesShares OutstandingFree FloatOptionableQSIQuantum-Si150217.76 million169.77 millionOptionableQSI HeadlinesRecent News About These CompaniesWhy Quantum-Si incorporated’s (QSI) Stock Is Up 5.02%July 1, 2026 | aaii.comAQuantum-Si (NASDAQ:QSI) CEO Jeffrey Alan Hawkins Sells 11,311 SharesJune 25, 2026 | insidertrades.comQuantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)June 16, 2026 | businesswire.comQuantum-Si and Cell Signaling Technology Partner to Advance Post-Translational Modification Analysis on Proteus™June 10, 2026 | rutlandherald.comRWhy Quantum-Si incorporated’s (QSI) Stock Is Down 7.81%June 8, 2026 | aaii.comAQuantum-Si Announces the Expansion of the Proteus™ RoadshowJune 3, 2026 | finance.yahoo.comQuantum-Si Announces the Expansion of the Proteus™ RoadshowJune 3, 2026 | businesswire.comIs Quantum-Si (NASDAQ:QSI) In A Good Position To Invest In Growth?June 1, 2026 | finance.yahoo.comQuantum-Si incorporated (QSI) Shareholder/Analyst Call Prepared Remarks TranscriptMay 15, 2026 | seekingalpha.comAlliance Global Partners Sticks to Its Buy Rating for Quantum-Si (QSI)May 14, 2026 | theglobeandmail.comQuantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)May 13, 2026 | businesswire.comQuantum-Si Earnings Call: Proteus Progress, Profits PendingMay 8, 2026 | tipranks.comQuantum-Si Incorporated (QSI) Reports Q1 Loss, Misses Revenue EstimatesMay 7, 2026 | zacks.comQuantum-Si Reports First Quarter 2026 Financial Results and Highlights Proteus™ Development MilestonesMay 7, 2026 | businesswire.comEarnings To Watch: Quantum-Si Inc (QSI) Reports Q1 2026 ResultMay 6, 2026 | finance.yahoo.comQuantum-Si to Participate in the H.C. Wainwright 4th Annual BioConnect Investor Conference at NASDAQMay 1, 2026 | tmcnet.comQuantum-Si Announces Successful Sequencing on Integrated Proteus™ InstrumentsApril 30, 2026 | tmcnet.comJeffry Keyes Sells 37,381 Shares of Quantum-Si (NASDAQ:QSI) StockApril 23, 2026 | insidertrades.comQuantum-Si to Report First Quarter 2026 Financial Results on May 7, 2026April 16, 2026 | businesswire.comQuantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)April 10, 2026 | businesswire.comNew MarketBeat Followers Over TimeMedia Sentiment Over TimeQSI Company DescriptionsQuantum-Si NASDAQ:QSI$0.86 0.00 (-0.48%) Closing price 04:00 PM EasternExtended Trading$0.87 +0.00 (+0.46%) As of 07:41 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 Massive. Learn more.Quantum-Si incorporated, a life sciences company, engages in the development of single-molecule detection platform to enable Next Generation Protein Sequencing (NGPS). The company's platform is comprised of the Platinum NGPS instrument; the Platinum Analysis Software service; and reagent kits and semiconductor chips for use with its instruments. It is used in protein identification, protein variants, antibody characterization, biomarker identification, and post translational modification analysis applications. The company was founded in 2013 is headquartered in Branford, Connecticut. 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