As of January 2026 Kaiser Aluminum has a market cap of NZ$3.47 Billion. This makes Kaiser Aluminum the world's 4727th 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 11th, 2026 the market cap of Kaiser Aluminum was reported to be: