As of December 2025 Leidos has a market cap of ยฃ17.97 Billion. This makes Leidos the world's 953th 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 6th, 2025 the market cap of Leidos was reported to be: