Quantum-Si

QSI · NASDAQ

$1.16+$0.07 (+6.42%)TodayMarket closed · Oct 20, 7:44 PM ET

Prev close $1.09

Latest news

NewsOct 9, 3:31 PM ETEvette Mitkov
Quantum-Si Stock Booms: What's Going On?
Press releaseOct 8, 4:05 PM ETGlobe Newswire
Quantum-Si Demonstrates Detection of 19 Amino Acids in Proteus™ Development Program
NewsOct 2, 8:02 AM ETAvi Kapoor
Nike Posts Mixed Q1 Results, Joins Mangoceuticals And Other Big Stocks Moving Lower In Friday’s Pre-Market Session
NewsOct 1, 8:05 AM ET
12 Health Care Stocks Moving In Thursday's Pre-Market Session
NewsSep 29, 2:24 PM ETVandana Singh
Why Is Quantum-Si Stock Gaining Tuesday?
Press releaseSep 28, 8:15 PM ETGlobe Newswire
Quantum-Si Presents Interim Proteus™ Data at World HUPO 2026 Demonstrating a Significant Step Change in Performance Compared to Platinum® Pro
Press releaseSep 15, 7:00 AM ETGlobe Newswire
Quantum-Si Announces Detection of 18 Amino Acids Using a Developmental Sequencing Kit on Proteus™
Press releaseSep 9, 8:00 AM ETGlobe Newswire
Quantum-Si Expands Proteus™ Roadshow with Additional U.S. and European Cities
NewsAug 13, 5:48 PM ET
Full Transcript: Quantum-Si Q2 2026 Earnings Call
Press releaseAug 13, 4:05 PM ETGlobe Newswire
Quantum-Si Reports Second Quarter 2026 Financial Results and Provides Proteus™ Development Update
Press releaseJun 16, 4:05 PM ETBusiness Wire
Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
Press releaseJun 10, 8:00 AM ETBusiness Wire
Quantum-Si and Cell Signaling Technology Partner to Advance Post-Translational Modification Analysis on Proteus™
Press releaseJun 3, 8:00 AM ETBusiness Wire
Quantum-Si Announces the Expansion of the Proteus™ Roadshow
Press releaseMay 13, 8:00 PM ETBusiness Wire
Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
Press releaseMay 7, 4:05 PM ETBusiness Wire
Quantum-Si Reports First Quarter 2026 Financial Results and Highlights Proteus™ Development Milestones
Press releaseMay 1, 8:30 AM ETBusiness Wire
Quantum-Si to Participate in the H.C. Wainwright 4th Annual BioConnect Investor Conference at NASDAQ
Press releaseApr 28, 8:30 AM ETBusiness Wire
Quantum-Si Announces Successful Sequencing on Integrated Proteus™ Instruments
Press releaseApr 16, 8:30 AM ETBusiness Wire
Quantum-Si to Report First Quarter 2026 Financial Results on May 7, 2026
Press releaseApr 15, 8:30 AM ETBusiness Wire
Quantum-Si Announces Two Customer Posters to be Presented at the American Association of Cancer Research Annual Meeting
Press releaseApr 14, 8:30 AM ETBusiness Wire
Quantum-Si Announces New Manuscript Demonstrating the Value of Single-molecule Protein Sequencing to Aid in Identifying New Cancer Treatment Strategies
Press releaseApr 10, 5:30 PM ETBusiness Wire
Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
Press releaseApr 8, 9:15 AM ETBusiness Wire
Quantum-Si Announces First Customer Samples Tested on the Proteus™ Prototype System
Press releaseApr 6, 9:40 AM ETBusiness Wire
Quantum-Si Announces the Start of the Proteus™ Roadshow
Press releaseMar 13, 4:05 PM ETBusiness Wire
Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
NewsMar 3, 4:53 PM ETErica Kollmann
Quantum-Si Shares Slip After Q4 Revenue Miss
NewsMar 3, 4:06 PM ET
Earnings Breakdown: Quantum-Si Q4
Press releaseMar 3, 4:05 PM ETBusiness Wire
Quantum-Si Reports Fourth Quarter and Full Year 2025 Financial Results
NewsMar 3, 6:11 AM ET
Earnings Scheduled For March 3, 2026
NewsMar 2, 12:01 PM ET
Examining the Future: Quantum-Si's Earnings Outlook
Press releaseFeb 13, 4:05 PM ETBusiness Wire
Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
Press releaseFeb 10, 8:00 AM ETBusiness Wire
Quantum-Si to Report Fourth Quarter and Full Year 2025 Financial Results on March 3, 2026
Press releaseFeb 5, 8:00 AM ETBusiness Wire
Quantum-Si Announces the Release of Two New Manuscripts Demonstrating the Value of Single-Molecule Protein Sequencing in Clinical Proteomics and Pathogen & Toxin Detection
Press releaseDec 22, 8:00 AM ETBusiness Wire
Quantum-Si Announces Launch of New Version 3 Library Preparation Kit and a Suite of Data Analysis Tool Enhancements
Press releaseDec 15, 6:00 PM ETBusiness Wire
Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
Press releaseNov 20, 8:00 AM ETBusiness Wire
Quantum-Si Highlights Significant Development Advancements for Proteus™ and Industry Leading Technology Pipeline at Investor & Analyst Day
Press releaseNov 19, 8:00 AM ETBusiness Wire
Quantum-Si to Highlight Significant Proteus™ Platform Development Progress and Provide Insights into the Company's Industry Leading Technology Pipeline at Investor & Analyst Day
Press releaseNov 5, 4:05 PM ETBusiness Wire
Quantum-Si Reports Third Quarter 2025 Financial Results
NewsNov 5, 6:12 AM ET
Earnings Scheduled For November 5, 2025
Press releaseOct 20, 8:00 AM ETBusiness Wire
Quantum-Si to Participate in the Canaccord Genuity MedTech, Diagnostics and Digital Health & Services Forum
Press releaseOct 13, 8:00 AM ETBusiness Wire
Quantum-Si to Report Third Quarter 2025 Financial Results on November 5, 2025
NewsSep 29, 8:06 AM ETAvi Kapoor
Inventiva, MoonLake Immunotherapeutics And Other Big Stocks Moving Lower In Monday's Pre-Market Session
NewsSep 29, 5:07 AM ETAvi Kapoor
Why Merus Shares Are Trading Higher By 38%; Here Are 20 Stocks Moving Premarket
NewsAug 5, 4:32 AM ET
Earnings Scheduled For August 5, 2025
NewsJul 7, 6:43 AM ETRishabh Mishra
US Stocks Likely To Open Lower After A Week Of Records: Tesla In Focus As Elon Musk Announces America Party

Information on this page is provided for informational purposes only and is not a recommendation to buy, sell or hold any security. Investing involves risk, including possible loss of principal. Market data is delayed at least 15 minutes and is provided without warranty. Analyst ratings, price targets and company data come from third-party sources. Past performance does not guarantee future results.

Latest news

Quantum-Si Stock Booms: What's Going On?

Quantum-Si Demonstrates Detection of 19 Amino Acids in Proteus™ Development Program

Nike Posts Mixed Q1 Results, Joins Mangoceuticals And Other Big Stocks Moving Lower In Friday’s Pre-Market Session

12 Health Care Stocks Moving In Thursday's Pre-Market Session

Why Is Quantum-Si Stock Gaining Tuesday?

Quantum-Si Presents Interim Proteus™ Data at World HUPO 2026 Demonstrating a Significant Step Change in Performance Compared to Platinum® Pro

Quantum-Si Announces Detection of 18 Amino Acids Using a Developmental Sequencing Kit on Proteus™

Quantum-Si Expands Proteus™ Roadshow with Additional U.S. and European Cities

Full Transcript: Quantum-Si Q2 2026 Earnings Call

Quantum-Si Reports Second Quarter 2026 Financial Results and Provides Proteus™ Development Update

Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)

Quantum-Si and Cell Signaling Technology Partner to Advance Post-Translational Modification Analysis on Proteus™

Quantum-Si Announces the Expansion of the Proteus™ Roadshow

Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)

Quantum-Si Reports First Quarter 2026 Financial Results and Highlights Proteus™ Development Milestones

Quantum-Si to Participate in the H.C. Wainwright 4th Annual BioConnect Investor Conference at NASDAQ

Quantum-Si Announces Successful Sequencing on Integrated Proteus™ Instruments

Quantum-Si to Report First Quarter 2026 Financial Results on May 7, 2026

Quantum-Si Announces Two Customer Posters to be Presented at the American Association of Cancer Research Annual Meeting

Quantum-Si Announces New Manuscript Demonstrating the Value of Single-molecule Protein Sequencing to Aid in Identifying New Cancer Treatment Strategies

Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)

Quantum-Si Announces First Customer Samples Tested on the Proteus™ Prototype System

Quantum-Si Announces the Start of the Proteus™ Roadshow

Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)

Quantum-Si Shares Slip After Q4 Revenue Miss

Earnings Breakdown: Quantum-Si Q4

Quantum-Si Reports Fourth Quarter and Full Year 2025 Financial Results

Earnings Scheduled For March 3, 2026

Examining the Future: Quantum-Si's Earnings Outlook

Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)

Quantum-Si to Report Fourth Quarter and Full Year 2025 Financial Results on March 3, 2026

Quantum-Si Announces the Release of Two New Manuscripts Demonstrating the Value of Single-Molecule Protein Sequencing in Clinical Proteomics and Pathogen & Toxin Detection

Quantum-Si Announces Launch of New Version 3 Library Preparation Kit and a Suite of Data Analysis Tool Enhancements

Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)

Quantum-Si Highlights Significant Development Advancements for Proteus™ and Industry Leading Technology Pipeline at Investor & Analyst Day

Quantum-Si to Highlight Significant Proteus™ Platform Development Progress and Provide Insights into the Company's Industry Leading Technology Pipeline at Investor & Analyst Day

Quantum-Si Reports Third Quarter 2025 Financial Results

Earnings Scheduled For November 5, 2025

Quantum-Si to Participate in the Canaccord Genuity MedTech, Diagnostics and Digital Health & Services Forum

Quantum-Si to Report Third Quarter 2025 Financial Results on November 5, 2025

Inventiva, MoonLake Immunotherapeutics And Other Big Stocks Moving Lower In Monday's Pre-Market Session

Why Merus Shares Are Trading Higher By 38%; Here Are 20 Stocks Moving Premarket

Earnings Scheduled For August 5, 2025

US Stocks Likely To Open Lower After A Week Of Records: Tesla In Focus As Elon Musk Announces America Party