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Quantum-Si Incorporated - Class A Common Stock (NQ:QSI)

0.9806 +0.1158 (+13.39%)
Streaming Delayed Price Updated: 4:00 PM EDT, Apr 30, 2026 Add to My Watchlist
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Price and Volume

Detailed Quote
Volume 11,893,421
Open 0.8765
Bid (Size) 0.9705 (1,000)
Ask (Size) 0.9877 (100)
Prev. Close 0.8648
Today's Range 0.8765 - 1.020
52wk Range 0.6912 - 3.100
Shares Outstanding N/A
Dividend Yield N/A
Chart for (: )
Intraday 1 Week 1 Month 3 Month 1 Year 3 Year 5 Year

Top News

More News
News headline image
Quantum-Si Announces Successful Sequencing on Integrated Proteus™ Instruments
From Quantum-Si Incorporated
Via Business Wire
News headline image
Forget Neuralink: The Real Brain Tech Trade Has 10 Names You’ve Never Heard ↗
The real brain computer interface opportunity isn’t in the headlines. These 10 stocks are building the systems that make it possible. 
Via InvestorPlace
Topics Artificial Intelligence Economy Initial Public Offering

Performance

YTD
-15.5%
-15.5%
1 Month
+32.9%
+32.9%
3 Month
-18.3%
-18.3%
6 Month
-54.2%
-54.2%
1 Year
-16.9%
-16.9%

More News

Read More
News headline image
Quantum-Si to Report First Quarter 2026 Financial Results on May 7, 2026
From Quantum-Si Incorporated
Via Business Wire
Quantum-Si (NASDAQ:QSI) Reports Q4 2025 Revenue Miss, Guides for Strategic Transition Year ↗
Via Chartmill
News headline image
Earnings Scheduled For November 5, 2025 ↗
Via Benzinga
News headline image
Quantum-Si Announces New Manuscript Demonstrating the Value of Single-molecule Protein Sequencing to Aid in Identifying New Cancer Treatment Strategies
From Quantum-Si Incorporated
Via Business Wire
News headline image
Quantum-Si Announces the Start of the Proteus™ Roadshow
From Quantum-Si Incorporated
Via Business Wire
News headline image
Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
From Quantum-Si Incorporated
Via Business Wire
News headline image
Quantum-Si (QSI) Q4 2025 Earnings Call Transcript ↗
Via The Motley Fool
Topics Earnings
News headline image
Quantum-Si Reports Fourth Quarter and Full Year 2025 Financial Results
From Quantum-Si Incorporated
Via Business Wire
News headline image
Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
From Quantum-Si Incorporated
Via Business Wire
News headline image
Quantum-Si to Report Fourth Quarter and Full Year 2025 Financial Results on March 3, 2026
From Quantum-Si Incorporated
Via Business Wire
News headline image
Quantum-Si Announces the Release of Two New Manuscripts Demonstrating the Value of Single-Molecule Protein Sequencing in Clinical Proteomics and Pathogen & Toxin Detection
From Quantum-Si Incorporated
Via Business Wire
News headline image
Quantum-Si Announces Launch of New Version 3 Library Preparation Kit and a Suite of Data Analysis Tool Enhancements
From Quantum-Si Incorporated
Via Business Wire
News headline image
Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
From Quantum-Si Incorporated
Via Business Wire
News headline image
Quantum-Si Highlights Significant Development Advancements for Proteus™ and Industry Leading Technology Pipeline at Investor & Analyst Day
From Quantum-Si Incorporated
Via Business Wire
News headline image
Quantum-Si to Highlight Significant Proteus™ Platform Development Progress and Provide Insights into the Company’s Industry Leading Technology Pipeline at Investor & Analyst Day
From Quantum-Si Incorporated
Via Business Wire
News headline image
Quantum-Si Reports Third Quarter 2025 Financial Results
From Quantum-Si Incorporated
Via Business Wire
News headline image
Quantum-Si to Participate in the Canaccord Genuity MedTech, Diagnostics and Digital Health & Services Forum
From Quantum-Si Incorporated
Via Business Wire
News headline image
12 Health Care Stocks Moving In Monday's Intraday Session ↗
Via Benzinga
News headline image
Quantum-Si to Report Third Quarter 2025 Financial Results on November 5, 2025
From Quantum-Si Incorporated
Via Business Wire
News headline image
Why Quantum-Si Stock Flopped on Friday ↗
Via The Motley Fool
News headline image
Inventiva, MoonLake Immunotherapeutics And Other Big Stocks Moving Lower In Monday's Pre-Market Session ↗
Via Benzinga
Topics Stocks
News headline image
Why Merus Shares Are Trading Higher By 38%; Here Are 20 Stocks Moving Premarket ↗
Via Benzinga
News headline image
Quantum-Si to Host Investor & Analyst Event in New York City on November 19, 2025
From Quantum-Si Incorporated
Via Business Wire

Frequently Asked Questions

Is Quantum-Si Incorporated - Class A Common Stock publicly traded?
Yes, Quantum-Si Incorporated - Class A Common Stock is publicly traded.
What exchange does Quantum-Si Incorporated - Class A Common Stock trade on?
Quantum-Si Incorporated - Class A Common Stock trades on the Nasdaq Stock Market
What is the ticker symbol for Quantum-Si Incorporated - Class A Common Stock?
The ticker symbol for Quantum-Si Incorporated - Class A Common Stock is QSI on the Nasdaq Stock Market
What is the current price of Quantum-Si Incorporated - Class A Common Stock?
The current price of Quantum-Si Incorporated - Class A Common Stock is 0.9806
When was Quantum-Si Incorporated - Class A Common Stock last traded?
The last trade of Quantum-Si Incorporated - Class A Common Stock was at 04/30/26 04:00 PM ET
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