Spero Therapeutics Inc (SPRO) market cap is $149.5M
Spero Therapeutics Inc (SPRO) market cap is $149.5M as of 2026-06-30. That figure is from Lician’s product cache for this healthcare name — not a placeholder and not copied across tickers.
Read the full SPRO research page for quote, filings, and the rest of the model. This satellite exists so “Spero Therapeutics Inc market cap” can rank with the actual number, then send you to /stock/spro.