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 cap289.92M
Market cap289.92M
Price-Earnings ratio-2.12
Price-Earnings ratio-2.12
Dividend yield—
Dividend yield—
Average volume3.77M
Average volume3.77M
High today$1.43
High today$1.43
Low today$1.30
Low today$1.30
Open price$1.40
Open price$1.40
Volume3.71M
Volume3.71M
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 $1.35, giving the company a market capitalization of 289.92M. It carries a P/E multiple of -2.12.
As of 2025-12-12, Quantum-Si(QSI) stock has fluctuated between $1.30 and $1.43. The current price stands at $1.35, placing the stock +3.5% above today's low and -5.9% off the high.
Quantum-Si(QSI) shares are trading with a volume of 3.71M, against a daily average of 3.77M.
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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