Quantum-Si
Why Robinhood?
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.
QSI Key Statistics
Stock Snapshot
The current Quantum-Si(QSI) stock price is $0.77, with a market capitalization of 169.57M. The stock trades at a price-to-earnings (P/E) ratio of -1.64.
On 2026-09-04, Quantum-Si(QSI) stock traded between a low of $0.76 and a high of $0.79. Shares are currently priced at $0.77, which is +1.3% above the low and -2.1% below the high.
The Quantum-Si(QSI)'s current trading volume is 979.5K, compared to an average daily volume of 2.64M.
In the last year, Quantum-Si(QSI) shares hit a 52-week high of $3.10 and a 52-week low of $0.69.
In the last year, Quantum-Si(QSI) shares hit a 52-week high of $3.10 and a 52-week low of $0.69.
People also own
Similar Marketcap
This list is generated by looking at the six larger and six smaller companies by market cap in relation to this company.
Popular Stocks
This list is generated by looking at the top 100 stocks and ETFs most commonly held by Robinhood customers and showing a random subset
Newly Listed
This list is generated by showing companies that recently went public.