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ALL
Market cap
$207324558
EPS
-0.51
P/E ratio
--
Price to sales
85.11
Dividend yield
--
Beta
3.141995
Previous close
$0.98
Today's open
$0.98
Day's range
$0.94 - $1
52 week range
$0.69 - $3.10
show more
CEO
Jeffrey Hawkins
Employees
149
Headquarters
Branford, CT
Exchange
NASDAQ Global Market
Shares outstanding
216368773
Issue type
Common Stock
Healthcare
Biotechnology & Life Sciences
Quantum-Si to Participate in the H.C. Wainwright 4th Annual BioConnect Investor Conference at NASDAQ
BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si to Participate in the H.C. Wainwright 4th Annual BioConnect Investor Conference.
Business Wire • May 1, 2026

Quantum-Si Announces Successful Sequencing on Integrated Proteus™ Instruments
BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Announces Successful Sequencing on Integrated Proteus™ Instruments.
Business Wire • Apr 28, 2026

Quantum-Si to Report First Quarter 2026 Financial Results on May 7, 2026
BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si to Report First Quarter 2026 Financial Results on May 7, 2026.
Business Wire • Apr 16, 2026

Quantum-Si Announces Two Customer Posters to be Presented at the American Association of Cancer Research Annual Meeting
BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Announces Two Customer Posters to be Presented at the American Association of Cancer Research Annual Meeting.
Business Wire • Apr 15, 2026

Quantum-Si Announces New Manuscript Demonstrating the Value of Single-molecule Protein Sequencing to Aid in Identifying New Cancer Treatment Strategies
BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Announces New Manuscript Demonstrating Value of Single-molecule Protein Sequencing to Aid in Identifying New Cancer Treatment Strategies.
Business Wire • Apr 14, 2026

Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4).
Business Wire • Apr 10, 2026

Quantum-Si Announces First Customer Samples Tested on the Proteus™ Prototype System
BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Announces First Customer Samples Tested on the Proteus™ Prototype System.
Business Wire • Apr 8, 2026

Quantum-Si Announces the Start of the Proteus™ Roadshow
BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Announces the Start of the Proteus™ Roadshow.
Business Wire • Apr 6, 2026

Quantum-Si incorporated (QSI) Q4 2025 Earnings Call Transcript
Quantum-Si incorporated (QSI) Q4 2025 Earnings Call Transcript
Seeking Alpha • Mar 4, 2026

Quantum-Si Shares Slip After Q4 Revenue Miss
Quantum-Si, Inc. (NASDAQ: QSI) shares moved lower in Tuesday's extended trading after the company released its fourth-quarter earnings report, missing Street revenue estimates.
Benzinga • Mar 3, 2026

¹ Disclosures

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