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

0.8791 +0.0173 (+2.01%)
Streaming Delayed Price Updated: 12:11 PM EDT, Mar 9, 2026 Add to My Watchlist
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Price and Volume

Detailed Quote
Volume 3,159,101
Open 0.8750
Bid (Size) 0.8782 (100)
Ask (Size) 0.8791 (1,100)
Prev. Close 0.8618
Today's Range 0.8500 - 0.9100
52wk Range 0.8420 - 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 (QSI) Q4 2025 Earnings Call Transcript ↗
Quantum-Si (QSI) Q4 2025 Earnings Call Transcript 
Via The Motley Fool
Topics Earnings
Quantum-Si (NASDAQ:QSI) Reports Q4 2025 Revenue Miss, Guides for Strategic Transition Year ↗
Via Chartmill

Performance

YTD
-24.2%
-24.2%
1 Month
-17.5%
-17.5%
3 Month
-39.4%
-39.4%
6 Month
-17.1%
-17.1%
1 Year
-25.2%
-25.2%

More News

Read More
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
Earnings Scheduled For November 5, 2025 ↗
Via Benzinga
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
News headline image
Russell 2000 Hits All-Time Highs: 8 Stocks Power Small-Cap Comeback ↗
Via Benzinga
Topics ETFs Economy
News headline image
12 Health Care Stocks Moving In Thursday's Intraday Session ↗
Via Benzinga
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 Announces the Launch of V4 Sequencing Kit, Expanding Proteome Coverage and Unlocking New Applications for Protein Sequencing
From Quantum-Si Incorporated
Via Business Wire
News headline image
Quantum-Si to Participate in the H.C. Wainwright 27th Annual Global Investment Conference
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

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 0.8791
When was Quantum-Si Incorporated - Class A Common Stock last traded?
The last trade of Quantum-Si Incorporated - Class A Common Stock was at 03/09/26 12:11 PM ET
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