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Quantum-Si Inc QSI

Healthcare · Life Sciences Tools & Services

$1.36last close 2026-10-12 · market cap $334.89M · delayed data

Trailing returns

1M+83.78%
3M+54.02%
6M+83.54%
1Y-18.56%
5Y-84.09%

Basis: Adjusted daily closes.

What it does

Quantum-Si incorporated, a life sciences company, develops proprietary, universal, and single-molecule detection platform applied to proteomics to enable next-gen protein sequencing (NGPS).

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Valuation, cost of capital, SEC filings, ownership and more, with the source named on every figure.

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Where these figures come from

Delayed data. Not financial advice. Figures are read from the sources above at the dates shown; nothing here is a recommendation. Disclosures · All companies