Identity
- Security key
- 20700
- Ticker
- QSI
- Type
- CS — Common Stock
- Exchange
- Nasdaq(XNAS)
- Venue group
- NASDAQ
- Operating MIC
- XNAS
- Market
- stocks
- Locale
- us
- Currency
- USD
- Listed
- 2021-06-11
- Round lot
- 100
- Active
- Yes
- Last seen in a load
- 2026-08-14 20:49
- Vendor updated
- 2026-08-13 06:09
- Ticker root / suffix
- QSI
Detail
Enriched 2026-08-14 20:47
- Market cap
- $182,352,360.5
- Shares outstanding (class)
- 197,822,663
- Shares outstanding (weighted)
- 217,760,163
- SIC
- 3829 MEASURING & CONTROLLING DEVICES, NEC
- Employees
- 145
- Location
- BRANFORD, CT
- Homepage
- https://www.quantum-si.com
- Description
Quantum-Si Inc is a life sciences company focused on proteomics research and analytical technologies. It develops single-molecule detection platforms designed to enable next-generation protein sequencing (NGPS) and large-scale protein analysis. Its technology supports massively parallel sequencing of proteins and can also be applied to the study of nucleic acids, providing tools for researchers and clinical applications in molecular analysis. The company's revenue is derived from sales of products and services.
Market cap and share counts drift.