NASDAQ:QSI Quantum-Si (QSI) Stock Price, News & Analysis $1.27 -0.06 (-4.51%) Closing price 04:00 PM EasternExtended Trading$1.26 -0.01 (-0.39%) As of 06:53 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 Stock Analysis Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock About Quantum-Si Stock (NASDAQ:QSI) 30 days 90 days 365 days Advanced Chart View Price History Chart DataSkip Price History Chart Get Quantum-Si alerts:Sign Up Key Stats Today's Range$1.26▼$1.3550-Day Range$1.33▼$2.0852-Week Range$0.61▼$5.77Volume6.42 million shsAverage Volume11.91 million shsMarket Capitalization$233.04 millionP/E RatioN/ADividend YieldN/APrice Target$3.48Consensus RatingModerate Buy Company Overview 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. Read More Quantum-Si Stock Analysis - MarketRank™See Top-Rated MarketRank™ Stocks48th Percentile Overall ScoreQSI MarketRank™: Quantum-Si scored higher than 48% of companies evaluated by MarketBeat, and ranked 418th out of 653 stocks in the computer and technology sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation. Analyst's Opinion3.3 / 5Analyst RatingModerate Buy Consensus RatingQuantum-Si has received a consensus rating of Moderate Buy. The company's average rating score is 2.67, and is based on 2 buy ratings, 1 hold rating, and no sell ratings.Amount of Analyst CoverageQuantum-Si has only been the subject of 2 research reports in the past 90 days.Read more about Quantum-Si's stock forecast and price target. Earnings and Valuation0.0 / 5Proj. Earnings GrowthDecreasing Earnings GrowthEarnings for Quantum-Si are expected to decrease in the coming year, from ($0.65) to ($0.75) per share.Price to Earnings Ratio vs. the MarketThe P/E ratio of Quantum-Si is -1.87, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.Price to Earnings Ratio vs. SectorThe P/E ratio of Quantum-Si is -1.87, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.Price to Book Value per Share RatioQuantum-Si has a P/B Ratio of 1.06. P/B Ratios below 3 indicates that a company is reasonably valued with respect to its assets and liabilities. Short Interest3.0 / 5Short Interest LevelHealthy Percentage of Shares Shorted15.51% of the float of Quantum-Si has been sold short.Short Interest Ratio / Days to CoverQuantum-Si has a short interest ratio ("days to cover") of 2.8, which is generally considered an acceptable ratio of short interest to trading volume.Change versus previous monthShort interest in Quantum-Si has recently decreased by 2.29%, indicating that investor sentiment is improving. Dividend0.0 / 5Dividend StrengthN/A Dividend YieldQuantum-Si does not currently pay a dividend.Dividend GrowthQuantum-Si does not have a long track record of dividend growth. Sustainability and ESGN/AEnvironmental ScoreN/A Percentage of Shares Shorted15.51% of the float of Quantum-Si has been sold short.Short Interest Ratio / Days to CoverQuantum-Si has a short interest ratio ("days to cover") of 2.8, which is generally considered an acceptable ratio of short interest to trading volume.Change versus previous monthShort interest in Quantum-Si has recently decreased by 2.29%, indicating that investor sentiment is improving. News and Social Media2.3 / 5News Sentiment0.08 News SentimentQuantum-Si has a news sentiment score of 0.08. This score is calculated as an average of sentiment of articles about the company over the last seven days and ranges from 2 (good news) to -2 (bad news). This is a lower news sentiment than the 0.55 average news sentiment score of Computer and Technology companies.News Coverage This WeekMarketBeat has tracked 8 news articles for Quantum-Si this week, compared to 3 articles on an average week.Search Interest25 people have searched for QSI on MarketBeat in the last 30 days. This is an increase of 92% compared to the previous 30 days.MarketBeat FollowsOnly 7 people have added Quantum-Si to their MarketBeat watchlist in the last 30 days. This is a decrease of 0% compared to the previous 30 days. Company Ownership2.5 / 5Insider TradingSelling Shares Insider Buying vs. Insider SellingIn the past three months, Quantum-Si insiders have sold more of their company's stock than they have bought. Specifically, they have bought $0.00 in company stock and sold $87,346.00 in company stock.Percentage Held by Insiders30.04% of the stock of Quantum-Si is held by insiders. A high percentage of insider ownership can be a sign of company health.Percentage Held by InstitutionsOnly 39.90% of the stock of Quantum-Si is held by institutions.Read more about Quantum-Si's insider trading history. Receive QSI Stock News and Ratings via Email Sign-up to receive the latest news and ratings for Quantum-Si and its competitors with MarketBeat's FREE daily newsletter. Email Address QSI Stock News HeadlinesQuantum-Si to Participate in the UBS Precision Medicine Frontiers SummitAugust 8 at 8:27 AM | finance.yahoo.comQuantum-Si (QSI) Q2 Revenue Falls 47%August 5 at 10:50 PM | fool.comThe Coin That Could Define Trump’s Crypto PresidencyWhen Trump returned to office, one of his first moves was to tap PayPal’s former COO, David Sacks, as a top advisor on crypto and AI. That alone signaled a shift. But insiders close to D.C. aren’t just talking crypto policy—they’re quietly buying something most retail investors have missed. While the crowd chases Bitcoin to $150,000, Weiss Ratings expert Juan Villaverde believes a different coin—already backed by giants like Google, Visa, and PayPal—could soon become crypto’s “Third Giant.”August 8 at 2:00 AM | Weiss Ratings (Ad)Quantum-Si incorporated (QSI) Q2 2025 Earnings Call TranscriptAugust 5 at 8:15 PM | seekingalpha.comQuantum-Si Reports Second Quarter 2025 Financial ResultsAugust 5 at 4:05 PM | businesswire.comEarnings To Watch: Quantum-Si Inc (QSI) Reports Q2 2025 ResultAugust 4, 2025 | finance.yahoo.comQuantum-Si to Participate in the Canaccord Genuity 45th Annual Growth ConferenceJuly 21, 2025 | finance.yahoo.comQuantum-Si to Report Second Quarter 2025 Financial Results on August 5, 2025July 14, 2025 | businesswire.comSee More Headlines QSI Stock Analysis - Frequently Asked Questions How have QSI shares performed this year? Quantum-Si's stock was trading at $2.70 at the beginning of the year. Since then, QSI stock has decreased by 53.0% and is now trading at $1.27. How were Quantum-Si's earnings last quarter? Quantum-Si Incorporated (NASDAQ:QSI) announced its earnings results on Tuesday, August, 5th. The company reported ($0.16) earnings per share for the quarter, meeting the consensus estimate of ($0.16). The firm earned $0.59 million during the quarter, compared to analysts' expectations of $1.28 million. Quantum-Si had a negative trailing twelve-month return on equity of 44.57% and a negative net margin of 3,120.14%. Read the conference call transcript. Who are Quantum-Si's major shareholders? Quantum-Si's top institutional shareholders include ARK Investment Management LLC (4.34%), Sumitomo Mitsui Trust Group Inc. (3.06%), Geode Capital Management LLC (1.88%) and Green Alpha Advisors LLC (0.12%). Insiders that own company stock include Jeffrey Alan Hawkins, Jonathan M Rothberg, Jeffry R Keyes, John S Vieceli, Christian Lapointe, Charles R Kummeth and Grace Johnston. View institutional ownership trends. How do I buy shares of Quantum-Si? Shares of QSI stock can be purchased through any online brokerage account. Popular online brokerages with access to the U.S. stock market include Charles Schwab, E*TRADE, Fidelity, and Vanguard Brokerage Services. What other stocks do shareholders of Quantum-Si own? Based on aggregate information from My MarketBeat watchlists, some other companies that Quantum-Si investors own include Digital Turbine (APPS), Archer Aviation (ACHR), SoFi Technologies (SOFI), ChargePoint (CHPT) and Canoo (GOEV). Company Calendar Last Earnings8/05/2025Today8/08/2025Fiscal Year End12/31/2025Get Stock AlertsIndustry, Sector and Symbol Stock ExchangeNASDAQ SectorComputer and Technology Industry ELEC COMP - SEMIC Sub-IndustryMeasuring And Control Equipment Current SymbolNASDAQ:QSI CIK1816431 Webwww.quantum-si.com Phone866-688-7374FaxN/AEmployees150Year FoundedN/APrice Target and Rating Average Price Target for Quantum-Si$3.48 High Price Target$5.50 Low Price Target$1.00 Potential Upside/Downside+161.3%Consensus RatingModerate Buy Rating Score (0-4)2.67 Research Coverage3 Analysts Profitability EPS (Trailing Twelve Months)($0.68) Trailing P/E RatioN/A Forward P/E RatioN/A P/E GrowthN/ANet Income-$101.01 million Net Margins-3,120.14% Pretax Margin-3,117.58% Return on Equity-44.57% Return on Assets-39.45% Debt Debt-to-Equity RatioN/A Current Ratio9.43 Quick Ratio18.89 Sales & Book Value Annual Sales$3.41 million Price / Sales71.53 Cash FlowN/A Price / Cash FlowN/A Book Value$1.20 per share Price / Book1.11Miscellaneous Outstanding Shares183,498,000Free Float128,375,000Market Cap$244.05 million OptionableOptionable Beta2.87 7 Stocks That Could Be Bigger Than Tesla, Nvidia, and GoogleLooking for the next FAANG stock before everyone has heard about it? 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