Quantum-Si
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Robinhood gives you the tools you need to put your money in motion. You can buy or sell Quantum-Si and other ETFs, options, and stocks.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.
CEOJeffrey Alan Hawkins
CEOJeffrey Alan Hawkins
Employees149
Employees149
HeadquartersBranford, Connecticut
HeadquartersBranford, Connecticut
Founded2013
Founded2013
Employees149
Employees149
QSI Key Statistics
Market cap262.90M
Market cap262.90M
Price-Earnings ratio-1.87
Price-Earnings ratio-1.87
Dividend yield—
Dividend yield—
Average volume4.15M
Average volume4.15M
High today$1.33
High today$1.33
Low today$1.21
Low today$1.21
Open price$1.31
Open price$1.31
Volume4.13M
Volume4.13M
52 Week high$5.77
52 Week high$5.77
52 Week low$0.9499
52 Week low$0.9499
Stock Snapshot
Quantum-Si(QSI) stock is priced at $1.21, giving the company a market capitalization of 262.9M. It carries a P/E multiple of -1.87.
As of 2025-12-16, Quantum-Si(QSI) stock has fluctuated between $1.21 and $1.33. The current price stands at $1.21, placing the stock +0.0% above today's low and -9.0% off the high.
Quantum-Si(QSI) shares are trading with a volume of 4.13M, against a daily average of 4.15M.
During the past year, Quantum-Si(QSI) stock moved between $0.95 at its lowest and $5.77 at its peak.
During the past year, Quantum-Si(QSI) stock moved between $0.95 at its lowest and $5.77 at its peak.
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