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Steel Dynamics, Inc. (STLD) is a non-energy raw materials company in the electric arc steel production industry, based in Fort Wayne, United States, with about 14,400 full-time employees.
It reported revenue of $18.18 billion for fiscal year 2025, up 3.6% from fiscal year 2024, and net income of $1.19 billion. In Q2 2026 (the quarter ended June 30, 2026) revenue was $6.09 billion, up 33.4% from a year before. Its largest business segment, Steel Operations, brought in 64% of segment revenue in fiscal year 2025; United States was the largest region with 94%. Its market capitalization was $34.17 billion as of October 9, 2026.
Figures from company filings and market data; latest fiscal year ended December 31, 2025; market data as of October 9, 2026.
, together with its subsidiaries, operates as a steel producer and metal recycler in the United States. It operates through four segments: Steel Operations, Metals Recycling Operations, Steel Fabrication Operations, and Aluminum Operations.
Steel Dynamics reported $18.18 billion in revenue for fiscal year 2025, up 3.6% from $17.54 billion in fiscal year 2024. In Q2 2026 revenue was $6.09 billion.
Steel Operations, with $13.41 billion or 64% of segment revenue in fiscal year 2025. Next: Metals Recycling (21%) and Steel Fabrication (7%).
United States: 94% of revenue by region in fiscal year 2025, followed by Non-United States (6%).
$34.17 billion as of October 9, 2026.
Listed companies of a similar size in the same industry (electric arc steel production) include Nucor Corporation (NUE), Gerdau S.a. (GGB), Grupo Simec, S.a.b. de C.v. (SIM), Aperam S.a. (APEMY).