Quantum-Si Inc (NASDAQ: QSI) is a life sciences company focused on proteomics research that develops and sells next-generation protein sequencing instruments and consumables for laboratory researchers. Revenue comes from instrument sales and recurring consumable sales, with instruments priced at approximately $85,000 for the Platinum and approximately $120,000 for the Platinum Pro (as of the 10-K filed March 3, 2026). The company competes against mass spectrometry instrument makers and affinity-based proteomics tool providers, positioning its benchtop sequencers as lower-cost, single-molecule alternatives to mass spectrometry systems that can cost $1,000,000 or more. Founded in 2013 as Q-SI Operations Inc. and incorporated in Delaware in 2020, Quantum-Si completed a business combination in June 2021. The company moved to a full commercial launch of Platinum in Q2 2024 and began first shipments of Platinum Pro in March 2025. As of November 2024, the company employed 187 people before a restructuring that reduced headcount by approximately 23%. Jeffrey Hawkins serves as President and CEO.

Revenue model

Instrument sales (Platinum at ~$85,000, Platinum Pro at ~$120,000 per unit) combined with recurring consumable sales, specifically Library Preparation Kits and Sequencing Kits designed exclusively for use with Quantum-Si instruments. Consumables are proprietary to the platform, creating a captive recurring revenue stream tied to installed instrument base.

Products and services

Platinum benchtop next-generation protein sequencer (full commercial launch Q2 2024, priced ~$85,000); Platinum Pro benchtop sequencer (launched January 2025, first shipments March 2025, priced ~$120,000); Library Preparation Kits; Sequencing Kits; Platinum Analysis Software for automated data analysis and visualization. A future Proteus platform has been announced but not yet launched as of the filing date.

Customers and end markets

Life sciences researchers across academic, pharmaceutical, and clinical laboratory settings. End market is proteomics research, including protein isoform characterization, post-translational modification analysis, and broad proteome analysis. Customer funding is partially dependent on government and institutional research grants.

Value-chain role

Instrument manufacturer and consumables supplier operating at the tools and reagents layer of the life sciences research value chain. The company designs, manufactures, and sells sequencing hardware, proprietary reagent kits, and data analysis software directly to research laboratories.

Competitors

Mass spectrometry instrument manufacturers, Affinity-based proteomics tool providers

Source: SEC 10-K, filed 2026-03-03

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