QSI
HEALTHCAREQuantum-Si Incorporated - Class A
$1.03+0.07 (+7.15%)PRE
Live · NASDAQ · May 9, Close
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52-Week Range
$0.69$3.10
$1.03
Fundamentals
Market Cap$223M
P/E Ratio—
EPS$-0.51
Dividend Yield—
Dividend / Share—
ROE-0.5%
Profit Margin—
Debt / Equity—
Trading
Volume8.1M
Avg Volume (10D)—
Shares Outstanding196.4M
QSI News
20 articles- Quantum-Si Incorporated (QSI) Reports Q1 Loss, Misses Revenue EstimatesYahoo Finance·May 7, 2026
- Quantum-Si (QSI) Q1 2026 Earnings TranscriptMotley Fool·May 7, 2026
- Quantum-Si Reports First Quarter 2026 Financial Results and Highlights Proteus™ Development MilestonesYahoo Finance·May 7, 2026
- Quantum-Si to Participate in the H.C. Wainwright 4th Annual BioConnect Investor Conference at NASDAQYahoo Finance·May 1, 2026
- Quantum-Si Announces Successful Sequencing on Integrated Proteus™ InstrumentsYahoo Finance·Apr 28, 2026
- Quantum-Si to Report First Quarter 2026 Financial Results on May 7, 2026Yahoo Finance·Apr 16, 2026
- Quantum-Si Announces Two Customer Posters to be Presented at the American Association of Cancer Research Annual MeetingYahoo Finance·Apr 15, 2026
- Quantum-Si Announces New Manuscript Demonstrating the Value of Single-molecule Protein Sequencing to Aid in Identifying New Cancer Treatment StrategiesYahoo Finance·Apr 14, 2026
- Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)Yahoo Finance·Apr 10, 2026
- Quantum-Si Announces First Customer Samples Tested on the Proteus™ Prototype SystemYahoo Finance·Apr 8, 2026
- Quantum-Si Announces the Start of the Proteus™ RoadshowYahoo Finance·Apr 6, 2026
- Quantum-Si incorporated Q4 2025 Earnings Call SummaryMoby·Mar 4, 2026
- Quantum-Si Inc (QSI) Q4 2025 Earnings Call Highlights: Strategic Advances Amid Revenue ChallengesYahoo Finance·Mar 4, 2026
- Quantum-Si (QSI) Q4 2025 Earnings Call TranscriptMotley Fool·Mar 3, 2026
- Quantum-Si Q4 Earnings Call HighlightsMarketbeat·Mar 3, 2026
- Quantum-Si Reports Fourth Quarter and Full Year 2025 Financial ResultsYahoo Finance·Mar 3, 2026
- Quantum-Si to Report Fourth Quarter and Full Year 2025 Financial Results on March 3, 2026Yahoo Finance·Feb 10, 2026
- Quantum-Si Announces the Release of Two New Manuscripts Demonstrating the Value of Single-Molecule Protein Sequencing in Clinical Proteomics and Pathogen & Toxin DetectionYahoo Finance·Feb 5, 2026
- Quantum-Si (NASDAQ:QSI) shareholders have endured a 89% loss from investing in the stock five years agoYahoo Finance·Jan 5, 2026
- Quantum-Si Announces Launch of New Version 3 Library Preparation Kit and a Suite of Data Analysis Tool EnhancementsYahoo Finance·Dec 22, 2025
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Price Data
Open$0.00
Previous Close$0.96
Day High$0.00
Day Low$0.00
52 Week High$3.10
52 Week Low$0.69
52-Week Range
$0.69$3.10
$1.03
Fundamentals
Market Cap$223M
P/E Ratio—
EPS$-0.51
Dividend Yield—
Dividend / Share—
ROE-0.5%
Profit Margin—
Debt / Equity—
Trading
Volume8.1M
Avg Volume (10D)—
Shares Outstanding196.4M
About Quantum-Si Incorporated - Class A
Quantum-Si incorporated operates the first next-generation protein sequencing platform for the healthcare industries.
HEALTHCAREMEDICAL DEVICES
Company Details
Security TypeStock
ExchangeNASDAQ
CurrencyUSD
Round Lot—
SICMEDICAL DEVICES
CIK—
Composite FIGI—
Share Class FIGI—