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
196.00M
Market cap196.00M
Price-Earnings ratio
-1.77
Price-Earnings ratio-1.77
Dividend yield
Dividend yield
Average volume
5.91M
Average volume5.91M
High today
$0.9798
High today$0.9798
Low today
$0.88
Low today$0.88
Open price
$0.95
Open price$0.95
Volume
13.19M
Volume13.19M
52 Week high
$3.10
52 Week high$3.10
52 Week low
$0.6912
52 Week low$0.6912

Stock Snapshot

The current Quantum-Si(QSI) stock price is $0.91, with a market capitalization of 196M. The stock trades at a price-to-earnings (P/E) ratio of -1.77.

On 2026-05-10, Quantum-Si(QSI) stock traded between a low of $0.88 and a high of $0.98. Shares are currently priced at $0.91, which is +3.4% above the low and -7.1% below the high.

The Quantum-Si(QSI)'s current trading volume is 13.19M, compared to an average daily volume of 5.91M.

During the past year, Quantum-Si(QSI) stock moved between $0.69 at its lowest and $3.10 at its peak.

During the past year, Quantum-Si(QSI) stock moved between $0.69 at its lowest and $3.10 at its peak.

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