As of March 2026 Amentum has a market cap of C$8.97 Billion. This makes Amentum the world's 2558th 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 Mar 21st, 2026 the market cap of Amentum was reported to be: