As of October 2026 Steel Dynamics has a market cap of โฌ31.89 Billion. This makes Steel Dynamics the world's 693th 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 30th, 2026 the market cap of Steel Dynamics was reported to be: