As of December 2025 Kaiser Aluminum has a market cap of ยฃ1.26 Billion. This makes Kaiser Aluminum the world's 4982th 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 9th, 2025 the market cap of Kaiser Aluminum was reported to be: