Skip to main content
Recent Quotes
My Watchlist
Indicators
Markets
Stocks
ETFs
Tools
Markets:
Overview
News
Currencies
International
Treasuries

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

2.150 UNCHANGED
Streaming Delayed Price Updated: 4:00 PM EDT, Oct 31, 2025 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 26,361
Open 2.150
Bid (Size) 2.170 (100)
Ask (Size) 2.180 (1,800)
Prev. Close 2.150
Today's Range 2.150 - 2.150
52wk Range 0.6121 - 5.770
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
Quantum-Si to Participate in the Canaccord Genuity MedTech, Diagnostics and Digital Health & Services Forum
From Quantum-Si Incorporated
Via Business Wire
12 Health Care Stocks Moving In Monday's Intraday Session
 
Via Benzinga

Performance

YTD
-49.5%
-49.5%
1 Month
+25.0%
+25.0%
3 Month
+49.3%
+49.3%
6 Month
+79.2%
+79.2%
1 Year
+183.8%
+183.8%

More News

Read More
Quantum-Si to Report Third Quarter 2025 Financial Results on November 5, 2025
From Quantum-Si Incorporated
Via Business Wire
Earnings Scheduled For August 5, 2025
Via Benzinga
Why Quantum-Si Stock Flopped on Friday
Via The Motley Fool
Inventiva, MoonLake Immunotherapeutics And Other Big Stocks Moving Lower In Monday's Pre-Market Session
Via Benzinga
Topics Stocks
Why Merus Shares Are Trading Higher By 38%; Here Are 20 Stocks Moving Premarket
Via Benzinga
Quantum-Si to Host Investor & Analyst Event in New York City on November 19, 2025
From Quantum-Si Incorporated
Via Business Wire
Russell 2000 Hits All-Time Highs: 8 Stocks Power Small-Cap Comeback
Via Benzinga
Topics ETFs Economy
12 Health Care Stocks Moving In Thursday's Intraday Session
Via Benzinga
Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
From Quantum-Si Incorporated
Via Business Wire
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
Quantum-Si to Participate in the H.C. Wainwright 27th Annual Global Investment Conference
From Quantum-Si Incorporated
Via Business Wire
Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
From Quantum-Si Incorporated
Via Business Wire
Quantum-Si to Participate in the UBS Precision Medicine Frontiers Summit
From Quantum-Si Incorporated
Via Business Wire
Quantum-Si (QSI) Q2 Revenue Falls 47%
Via The Motley Fool
Quantum-Si Reports Second Quarter 2025 Financial Results
From Quantum-Si Incorporated
Via Business Wire
Quantum-Si to Participate in the Canaccord Genuity 45th Annual Growth Conference
From Quantum-Si Incorporated
Via Business Wire
Quantum-Si to Report Second Quarter 2025 Financial Results on August 5, 2025
From Quantum-Si Incorporated
Via Business Wire
Tesla, Quantum-Si And Other Big Stocks Moving Lower In Monday's Pre-Market Session
Via Benzinga
12 Health Care Stocks Moving In Monday's Pre-Market Session
Via Benzinga
US Stocks Likely To Open Lower After A Week Of Records: Tesla In Focus As Elon Musk Announces America Party
Via Benzinga
Why Apogee Therapeutics Shares Are Trading Higher By 50%; Here Are 20 Stocks Moving Premarket
Via Benzinga
Boeing, Orix And 3 Stocks To Watch Heading Into Monday
Via Benzinga
Quantum-Si Incorporated Announces Pricing of $50 Million Registered Direct Offering of Common Stock
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 2.150
When was Quantum-Si Incorporated - Class A Common Stock last traded?
The last trade of Quantum-Si Incorporated - Class A Common Stock was at 10/31/25 04:00 PM ET
Stock Quote API & Stock News API supplied by www.cloudquote.io
Quotes delayed at least 20 minutes.
By accessing this page, you agree to the Privacy Policy and Terms Of Service.
© 2025 FinancialContent. All rights reserved.