STEEL DYNAMICS INC (STLD)
SEC filings, insider trading & institutional ownership from EDGAR.
Steel Dynamics, Inc. is one of the largest domestic steel producers and metal recyclers in the United States, with estimated steelmaking and steel coating capacity of approximately 16 million tons and one of the most diversified product and end-market portfolios in the domestic steel industry, combined with meaningful downstream steel fabrication operations. The company generates revenue primarily through three interconnected activities: the manufacture and sale of steel products, the processing and sale of recycled ferrous and nonferrous metals, and the fabrication and sale of steel joists and deck products. Its operations are built around a vertically connected, circular manufacturing model in which its metals recycling platform collects and processes scrap from manufacturing and end-of-life items (such as automobiles, appliances, and machinery), which is sold both externally and internally to supply its electric arc furnace (EAF) steel mills; the resulting steel is then sold to external customers as well as to the company's own steel-consuming businesses (fabrication and downstream processing operations), which in 2023 purchased 1.8 million tons, or 14%, of total steel shipments.
Over 70% of steel and steel fabrication sales are considered value-added, with products serving diverse end markets including construction, automotive, energy, and industrial sectors, and customers benefiting from freight savings and short lead times due to mill locations near scrap sources and customer bases. A key growth initiative is the Southwest-Sinton Flat Roll Division in Texas, a next-generation EAF flat roll steel mill with approximately 3.0 million tons of annual capacity, including galvanizing and paint coating lines, with additional coating lines under construction at Sinton and the Heartland Flat Roll Division expected to begin operating in early 2024, targeting higher-strength flat roll steel for energy and automotive markets. The company is also expanding into a new market through a $2.7 billion project to construct a 650,000 metric ton recycled aluminum flat rolled products mill in Columbus, Mississippi, supported by two satellite recycled aluminum slab centers, targeting can stock (approximately 45%), automotive (35%), and common alloy/industrial (20%) end uses, with commissioning expected in mid-2025; this initiative leverages the company's existing metals recycling platform and customer relationships, as many steel customers also consume aluminum flat rolled products.
Sustainability is central to the company's strategy, as its steel is produced exclusively via EAF technology using recycled ferrous scrap, generating substantially lower greenhouse gas emissions and energy use compared to traditional blast furnace steelmaking; the company has also announced a joint venture, SDI Biocarbon Solutions, LLC, to construct a biocarbon production facility in Columbus, Mississippi, expected to begin operations in late 2024 and supply a renewable alternative to anthracite for its steel mills. The company operates a low-cost, highly variable operating cost structure supported by extensive performance-based incentive compensation across its workforce and leadership, and it serves a broad customer base across varied end markets, mitigating exposure to any single product or sector while optimizing steel mill utilization through cycles.
AI-summarized from Item 1 (Business) of the company's most recent 10-K filing.
Financials
As reported to the SEC via XBRL, no adjustments
| Gross profit | $2.39B |
| Operating income | $1.48B |
| Diluted EPS | $7.99 |
| Gross margin | 13.2% |
| Net margin | 6.5% |
Latest filings
10-K, 10-Q, 8-K, Form 4 & 13D/G. Sourced directly from SEC EDGAR
| Form | Filed | Accession |
|---|---|---|
| 8-K/Aamended | Aug 18, 2026 | 0001104659-26-098390EDGAR |
| 4Hamann Jennifer L | Aug 14, 2026 | 0001022671-26-000145EDGAR |
| 8-K | Aug 14, 2026 | 0001104659-26-096861EDGAR |
| SC 13GFMR LLC and 1 other reporting person | Aug 6, 2026 | 0000315066-26-002140EDGAR |
| 8-K | Aug 4, 2026 | 0001104659-26-090129EDGAR |
| 4MILLETT MARK D | Jul 28, 2026 | 0001022671-26-000143EDGAR |
| 10-Q | Jul 28, 2026 | 0001104659-26-087414EDGAR |
| 8-K | Jul 21, 2026 | 0001104659-26-085277EDGAR |
Insider trading
From Form 4 filings
| Insider | Date | Type |
|---|---|---|
| Hamann Jennifer L | Aug 13, 2026 | Grant / award |
| MILLETT MARK D | Jul 28, 2026 | Gift |
| BARGABOS SHEREE L | Jul 10, 2026 | Grant / award |
| Cornew Kenneth W. | Jul 10, 2026 | Grant / award |
| DOLAN TRACI M | Jul 10, 2026 | Grant / award |
Top holders
13F & 13D/G · latest quarter
| Holder | Stake | Filed | Value |
|---|---|---|---|
| BlackRock, Inc. | 8.6% | Aug 7, 2026 | $2.84B |
| Vanguard Capital Management | 6.2% | Aug 13, 2026 | $2.04B |
| FMR LLC | 5.4% | Aug 13, 2026 | $1.77B |
| STATE STREET CORPORATION | 5.1% | Aug 7, 2026 | $1.70B |
| Vanguard Portfolio Management | 4.7% | Aug 13, 2026 | $1.55B |
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Data as of Sep 15, 2026Source: SEC EDGAR.