As of December 2025 ArcelorMittal has a market cap of S$45.40 Billion. This makes ArcelorMittal the world's 670th 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 12th, 2025 the market cap of ArcelorMittal was reported to be: