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Quantum-Si Incorporated - Class A Common Stock
(NQ:
QSI
)
0.8548
-0.0025 (-0.29%)
Streaming Delayed Price
Updated: 4:00 PM EDT, Jun 26, 2026
Add to My Watchlist
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Price and Volume
Detailed Quote
Volume
18,787,047
Open
0.8377
Bid (Size)
0.8455 (100)
Ask (Size)
0.8589 (2,700)
Prev. Close
0.8573
Today's Range
0.7951 - 0.8898
52wk Range
0.6912 - 3.100
Shares Outstanding
N/A
Dividend Yield
N/A
Intraday
1 Week
1 Month
3 Month
1 Year
3 Year
5 Year
Top News
More News
Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
June 16, 2026
From
Quantum-Si Incorporated
Via
Business Wire
Quantum-Si and Cell Signaling Technology Partner to Advance Post-Translational Modification Analysis on Proteus™
June 10, 2026
From
Quantum-Si Incorporated
Via
Business Wire
Performance
YTD
-26.3%
-26.3%
1 Month
-20.9%
-20.9%
3 Month
+5.7%
+5.7%
6 Month
-30.5%
-30.5%
1 Year
-57.7%
-57.7%
More News
Read More
Quantum-Si Announces the Expansion of the Proteus™ Roadshow
June 03, 2026
From
Quantum-Si Incorporated
Via
Business Wire
Quantum-Si (QSI) Reports Q1 2026 Revenue Miss but Beats EPS Amid Proteus Launch Preparations
↗
May 07, 2026
Via
Chartmill
Quantum-Si (NASDAQ:QSI) Reports Q4 2025 Revenue Miss, Guides for Strategic Transition Year
↗
March 03, 2026
Via
Chartmill
Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
May 13, 2026
From
Quantum-Si Incorporated
Via
Business Wire
Quantum-Si Q1 Earnings Call Highlights
↗
May 08, 2026
Via
MarketBeat
Topics
Earnings
Quantum-Si (QSI) Q1 2026 Earnings Transcript
↗
May 07, 2026
Via
The Motley Fool
Quantum-Si Reports First Quarter 2026 Financial Results and Highlights Proteus™ Development Milestones
May 07, 2026
From
Quantum-Si Incorporated
Via
Business Wire
Quantum-Si to Participate in the H.C. Wainwright 4th Annual BioConnect Investor Conference at NASDAQ
May 01, 2026
From
Quantum-Si Incorporated
Via
Business Wire
Quantum-Si Announces Successful Sequencing on Integrated Proteus™ Instruments
April 28, 2026
From
Quantum-Si Incorporated
Via
Business Wire
Forget Neuralink: The Real Brain Tech Trade Has 10 Names You’ve Never Heard
↗
April 25, 2026
Via
InvestorPlace
Topics
Artificial Intelligence
Economy
Initial Public Offering
Quantum-Si to Report First Quarter 2026 Financial Results on May 7, 2026
April 16, 2026
From
Quantum-Si Incorporated
Via
Business Wire
Quantum-Si Announces Two Customer Posters to be Presented at the American Association of Cancer Research Annual Meeting
April 15, 2026
From
Quantum-Si Incorporated
Via
Business Wire
Quantum-Si Announces New Manuscript Demonstrating the Value of Single-molecule Protein Sequencing to Aid in Identifying New Cancer Treatment Strategies
April 14, 2026
From
Quantum-Si Incorporated
Via
Business Wire
Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
April 10, 2026
From
Quantum-Si Incorporated
Via
Business Wire
Quantum-Si Announces First Customer Samples Tested on the Proteus™ Prototype System
April 08, 2026
From
Quantum-Si Incorporated
Via
Business Wire
Quantum-Si Announces the Start of the Proteus™ Roadshow
April 06, 2026
From
Quantum-Si Incorporated
Via
Business Wire
Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
March 13, 2026
From
Quantum-Si Incorporated
Via
Business Wire
Quantum-Si (QSI) Q4 2025 Earnings Call Transcript
↗
March 03, 2026
Via
The Motley Fool
Topics
Earnings
Quantum-Si Reports Fourth Quarter and Full Year 2025 Financial Results
March 03, 2026
From
Quantum-Si Incorporated
Via
Business Wire
Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
February 13, 2026
From
Quantum-Si Incorporated
Via
Business Wire
Quantum-Si to Report Fourth Quarter and Full Year 2025 Financial Results on March 3, 2026
February 10, 2026
From
Quantum-Si Incorporated
Via
Business 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
February 05, 2026
From
Quantum-Si Incorporated
Via
Business Wire
Quantum-Si Announces Launch of New Version 3 Library Preparation Kit and a Suite of Data Analysis Tool Enhancements
December 22, 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 0.8548
When was Quantum-Si Incorporated - Class A Common Stock last traded?
The last trade of Quantum-Si Incorporated - Class A Common Stock was at 06/26/26 04:00 PM ET
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