Quantum-Si Inc (QSI)
Health Care · Proteomics instrumentation and consumables · Nasdaq
A proteomics instrumentation and consumables company bringing massively parallel single-molecule protein sequencing to researchers and clinicians through its Platinum platform, with a next-generation Proteus system in development.
What Quantum-Si Inc does
Quantum-Si is a life sciences company developing single-molecule detection platforms for proteomics research. The company provides next-generation protein sequencing (NGPS) technology enabling researchers and clinicians to analyze the proteome (the full set of proteins in a cell) in a massively parallel fashion rather than sequentially. Its current offerings include the Platinum NGPS line of instruments, analysis software, and consumable kits, with the next-generation Proteus platform anticipated to launch by end of 2026.
Themes: ["proteomics research","protein sequencing","single-molecule detection","biomarker discovery","life sciences instrumentation","consumables and reagents"]
Fundamentals
- Price$0.88 as of 2026-07-10 close
- Market cap$192M as of 2026-07-13
- 1-year return-51.2% as of 2026-07-10 close
- Net margin-5605.9% as of 2026-07-13
- Gross margin+40.0% as of 2026-07-13
- ROE-47.3% as of 2026-07-13
- Debt / equity0.00 as of 2026-07-13
- Revenue growth (YoY)-46.2% as of 2026-07-13
- Beta3.25 as of 2026-07-13
Key risks (from latest filing)
["Proteus platform delay or failure to launch by end of 2026 or without promised customer-focused capabilities could materially impact market credibility and long-term financial success","Significant revenue decline (down 46% YoY) and deeply negative net margin (-5606%) indicate severe financial stress and limited path to profitability","New product launches and pending Proteus announcement may slow customer purchasing decisions for existing Platinum instruments and consumables, impacting near-term revenue"]
Competitors & peers
- Thermo Fisher Scientific
- Agilent Technologies (A)
- PerkinElmer (PKI)
- Waters Corporation (WAT)
- Shimadzu
- Bruker Corporation
Fundamentals: Finnhub, as of 2026-07-13. Filings: SEC EDGAR. Prices are delayed daily-close data.
Last updated 2026-07-10.
Informational only — NOT financial advice. All figures are delayed daily-close data from SEC EDGAR & Finnhub, shown with their as-of date.