As of January 2026 Spero Therapeutics has a market cap of ยฃ0.10 Billion. This makes Spero Therapeutics the world's 8931th 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 Jan 12th, 2026 the market cap of Spero Therapeutics was reported to be: