As of December 2025 Quantum-Si has a market cap of ยฃ0.20 Billion. This makes Quantum-Si the world's 8070th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.
On Dec 19th, 2025 the market cap of Quantum-Si was reported to be: