As of October 2026 Kaiser Aluminum has a market cap of โน188.11 Billion. This makes Kaiser Aluminum the world's 4934th 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 27th, 2026 the market cap of Kaiser Aluminum was reported to be: