As of October 2026 Century Aluminum has a market cap of A$5.06 Billion. This makes Century Aluminum the world's 3833th 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 Oct 3rd, 2026 the market cap of Century Aluminum was reported to be: