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Quantum-Si Incorporated - Class A Common Stock
(NQ:
QSI
)
1.430
+0.360 (+33.64%)
Delayed Quote
Updated: 4:00 PM EDT, Oct 1, 2026
Add to My Watchlist
Quote
Overview
Detailed Quote
Charting
Historical Prices
News
All News
News Headlines
Press Releases
Research
Quarterly Reports
Insider Filings
Other Filings
Price and Volume
Detailed Quote
Volume
33,063,469
Open
1.200
Bid (Size)
1.360 (700)
Ask (Size)
1.380 (200)
Prev. Close
1.070
Today's Range
1.150 - 1.480
52wk Range
0.6900 - 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
Tech Stocks AISP, PRSO, QSI, SCKT: $29M DHS Awards, Military Drones, Protein Sequencing Drive Catalysts
October 01, 2026
Via
AB Newswire
Topics
Artificial Intelligence
Which stocks are experiencing notable movement on Thursday?
↗
October 01, 2026
Via
Chartmill
Performance
YTD
+23.3%
+23.3%
1 Month
+88.8%
+88.8%
3 Month
+53.7%
+53.7%
6 Month
+91.2%
+91.2%
1 Year
-2.1%
-2.1%
More News
Read More
Thursday's session: gap up and gap down stocks
↗
October 01, 2026
Via
Chartmill
These stocks are moving in today's session
↗
September 29, 2026
Via
Chartmill
Quantum-Si (QSI) Reports Q1 2026 Revenue Miss but Beats EPS Amid Proteus Launch Preparations
↗
May 07, 2026
Via
Chartmill
Quantum-Si Presents Interim Proteus™ Data at World HUPO 2026 Demonstrating a Significant Step Change in Performance Compared to Platinum® Pro
September 28, 2026
From
Quantum-Si Incorporated
Via
GlobeNewswire
Quantum-Si Announces Detection of 18 Amino Acids Using a Developmental Sequencing Kit on Proteus™
September 15, 2026
From
Quantum-Si Incorporated
Via
GlobeNewswire
Quantum-Si Expands Proteus™ Roadshow with Additional U.S. and European Cities
September 09, 2026
From
Quantum-Si Incorporated
Via
GlobeNewswire
Quantum-Si (QSI) Q2 2026 Earnings Call Transcript
↗
August 20, 2026
Via
The Motley Fool
Topics
Earnings
Quantum-Si to Participate in the H.C. Wainwright 28th Annual Global Investment Conference
August 18, 2026
From
Quantum-Si Incorporated
Via
GlobeNewswire
Quantum-Si Q2 Earnings Call Highlights
↗
August 13, 2026
Via
MarketBeat
Topics
Earnings
Full Transcript: Quantum-Si Q2 2026 Earnings Call
↗
August 13, 2026
Via
Benzinga
Topics
Earnings
Quantum-Si Reports Second Quarter 2026 Financial Results and Provides Proteus™ Development Update
August 13, 2026
From
Quantum-Si Incorporated
Via
GlobeNewswire
Quantum-Si to Report Second Quarter 2026 Financial Results on August 13, 2026
July 27, 2026
From
Quantum-Si Incorporated
Via
GlobeNewswire
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
Quantum-Si Announces the Expansion of the Proteus™ Roadshow
June 03, 2026
From
Quantum-Si Incorporated
Via
Business Wire
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
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 1.430
When was Quantum-Si Incorporated - Class A Common Stock last traded?
The last trade of Quantum-Si Incorporated - Class A Common Stock was at 10/01/26 04:00 PM ET
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