Quantum-Si

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About QSI

Quantum-Si, Inc. is a life sciences company focused on revolutionizing the growing field of proteomics. It engages in the development of a proprietary universal single-molecule detection platform to enable Next-Generation Protein Sequencing (NGPS), the ability to sequence proteins in a massively parallel fashion. 

CEO
Jeffrey Alan Hawkins
CEOJeffrey Alan Hawkins
Employees
145
Employees145
Headquarters
Branford, Connecticut
HeadquartersBranford, Connecticut
Founded
2013
Founded2013
Employees
145
Employees145

QSI Key Statistics

Market cap
189.88M
Market cap189.88M
Price-Earnings ratio
-1.65
Price-Earnings ratio-1.65
Dividend yield
Dividend yield
Average volume
3.25M
Average volume3.25M
High today
$0.8852
High today$0.8852
Low today
$0.86
Low today$0.86
Open price
$0.86
Open price$0.86
Volume
173.92K
Volume173.92K
52 Week high
$3.10
52 Week high$3.10
52 Week low
$0.792
52 Week low$0.792

Stock Snapshot

Quantum-Si(QSI) stock is priced at $0.88, giving the company a market capitalization of 189.88M. It carries a P/E multiple of -1.65.

As of 2026-03-25, Quantum-Si(QSI) stock has fluctuated between $0.86 and $0.89. The current price stands at $0.88, placing the stock +2.0% above today's low and -0.9% off the high.

Quantum-Si(QSI) shares are trading with a volume of 173.92K, against a daily average of 3.25M.

During the past year, Quantum-Si(QSI) stock moved between $0.79 at its lowest and $3.10 at its peak.

During the past year, Quantum-Si(QSI) stock moved between $0.79 at its lowest and $3.10 at its peak.

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