As of March 2026 Steel Dynamics has a market cap of โน2.273 Trillion. This makes Steel Dynamics the world's 950th 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 Mar 19th, 2026 the market cap of Steel Dynamics was reported to be: