As of May 2026 Steel Dynamics has a market cap of NZ$56.43 Billion. This makes Steel Dynamics the world's 740th 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 May 4th, 2026 the market cap of Steel Dynamics was reported to be: