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
149
Employees149
Headquarters
Branford, Connecticut
HeadquartersBranford, Connecticut
Founded
2013
Founded2013
Employees
149
Employees149

QSI Key Statistics

Market cap
196.31M
Market cap196.31M
Price-Earnings ratio
-1.38
Price-Earnings ratio-1.38
Dividend yield
Dividend yield
Average volume
2.50M
Average volume2.50M
High today
$0.975
High today$0.975
Low today
$0.8971
Low today$0.8971
Open price
$0.948
Open price$0.948
Volume
2.97M
Volume2.97M
52 Week high
$3.10
52 Week high$3.10
52 Week low
$0.887
52 Week low$0.887

Stock Snapshot

Quantum-Si(QSI) stock is priced at $0.92, giving the company a market capitalization of 196.31M. It carries a P/E multiple of -1.38.

As of 2026-03-05, Quantum-Si(QSI) stock has fluctuated between $0.90 and $0.98. The current price stands at $0.92, placing the stock +2.1% above today's low and -6.1% off the high.

Quantum-Si(QSI) shares are trading with a volume of 2.97M, against a daily average of 2.5M.

During the past year, Quantum-Si(QSI) stock moved between $0.89 at its lowest and $3.10 at its peak.

During the past year, Quantum-Si(QSI) stock moved between $0.89 at its lowest and $3.10 at its peak.

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