STEEL DYNAMICS INC (STLD)

Steel Dynamics, Inc. is an industrial metals solutions company with facilities throughout the United States and Mexico. It runs a circular manufacturing model in which recycled scrap is the primary input for lower-carbon-emission products. The company describes itself as one of the largest domestic steel producers and metals recyclers in North America, with estimated steelmaking and steel coating capacity of about 16 million tons as of December 31, 2025. Its main revenue sources are the manufacture and sale of steel products, the processing and sale of recycled ferrous and nonferrous metals, and the fabrication and sale of steel joist and deck products.

The business spans steel operations (a Long Products Steel Group and a Flat Roll Steel Group), metals recycling, steel fabrication, and a newer aluminum group. Its steel mills use only electric arc furnace technology, with recycled ferrous scrap as the main raw material. Downstream operations include flat rolled processing, coating and distribution facilities. The aluminum operations include a recycled aluminum flat rolled products mill that uses recycled aluminum scrap. A biocarbon facility in Columbus, Mississippi, which began operating in the second half of 2025, converts biomass into biocarbon. The company plans to use it in place of anthracite in steelmaking. About 70% of steel and steel fabrication sales are considered value-added.

Steel Dynamics serves a broad customer base across a diversified set of end markets. Its aluminum flat rolled products are aimed at the beverage can industry and at the automotive and industrial sectors. It emphasizes supply-chain solutions that help customers improve efficiency and cut time, cost and carbon footprint. Its own steel-consuming businesses bought 1.8 million tons of steel from its mills in 2025, equal to 13% of total steel shipments.

Operationally, the businesses are vertically connected. The metals recycling platform is the largest supplier of recycled ferrous scrap to the steel mills and of recycled aluminum scrap to the aluminum operations, which reduces working capital and improves scrap quality. Most scrap-consuming operations are located near sources of scrap and near customers, which lowers freight costs and shortens lead times. The company stresses a decentralized, entrepreneurial culture with heavy performance-based pay, and a highly variable, low-cost operating structure. Mark Millett, who co-founded the company in 1993, is Chairman and CEO. The text does not name its headquarters or its competitors.