As of September 2026 Leidos has a market cap of ยฃ11.96 Billion. This makes Leidos the world's 1401th 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 Sep 18th, 2026 the market cap of Leidos was reported to be: