As of June 2026 Steel Dynamics has a market cap of โน3.877 Trillion. This makes Steel Dynamics the world's 621th 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 Jun 12th, 2026 the market cap of Steel Dynamics was reported to be: