As of September 2026 Alcoa has a market cap of NZ$20.49 Billion. This makes Alcoa the world's 1819th 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 20th, 2026 the market cap of Alcoa was reported to be: