As of January 2026 Allegheny Technologies has a market cap of S$21.37 Billion. This makes Allegheny Technologies the world's 1335th 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 7th, 2026 the market cap of Allegheny Technologies was reported to be: