Steel Dynamics, Inc. (STLD) | The Buildout — AI Infrastructure
The Verdict
Steel Dynamics is a vertically integrated metals company that melts scrap in electric arc furnaces, rolls it into steel, coats and fabricates it, and is ramping a recycled aluminum flat-rolled mill. It fits the AI infrastructure buildout indirectly: data-center buildings require structural steel long products and fabricated steel joist and deck, both of which the company makes. The AI exposure is embedded in non-residential construction and is not disclosed separately.
| Market Cap | — |
| Revenue (TTM) | $20.5B |
| Revenue Growth | +19.8% |
| EBITDA Margin (TTM) | 13.5% |
| Net Debt | $3.6B |
| Earnings Beats | 4 of 7 |
| P/E (TTM) | — |
| EV/EBITDA (TTM) | — |
What We Like
- Record steel shipments of 3.7 million tons in Q2 2026 at 90% mill utilization, versus 81% for the industry.
- Steel operating income rose 30% sequentially to $721 million, with average selling price up $105 per ton and value-added spreads up $70 per ton from Q4 2025 lows.
- Fabrication backlog is up 45% year-over-year by volume, supported by a Dodge Momentum Index up more than 30% year-over-year.
- Three growth initiatives involved more than $5 billion of investment and are estimated to provide over $1.4 billion of through-cycle annual EBITDA capability.
- 2027 capex is guided at $500–$600 million maximum with sustained capital of $250–$300 million, signaling a cash flow inflection.
What We’re Watching
- Aluminum ramp: Q2 flat-rolled sheet shipments were 53,000 metric tons versus 60,000–70,000 guided; second CASH line commissioning slipped to Q4 2026.
- Steel imports from three Asian countries are rising; management hopes administrative action arrives in Q3/Q4 but acknowledges near-term disruption.
- Aluminum customer concentration is a new 10-Q risk factor, with the ramp depending on a core group of significant customers.
- Leadership transition to Theresa Wagler as CEO effective January 1, 2027; watch for any change in capital allocation or strategy.
The thesis is strengthening, driven by steel margin inflection and aluminum moving toward profitability, but the largest open question is whether the aluminum ramp hits H2 2026 earnings-positive and exit-2026 90% utilization targets.
Earnings Beat
Steel Dynamics reported Q2 2026 net sales of $6.1 billion, gross margin of 15.7%, and diluted EPS of $3.69. Steel shipments reached a record 3.7 million tons, and steel operating income rose 30% sequentially to $721 million. Aluminum recorded a $33 million operating loss, improved from $65 million in Q1, while fabrication operating income was $85 million.
| Metric | Q2 FY2026 | Q1 FY2026 | Q2 FY2025 | YoY |
|---|---|---|---|---|
| Revenue | $6.1B | $5.2B | $4.6B | +33.4% |
| Gross margin | 15.7% | 14.7% | 13.5% | +220bps |
| EBITDA | $925M | $747M | $516M | +79.3% |
| EPS | $3.70 | $2.79 | $2.00 | +84.9% |
| Steel shipments (million tons) | 3.7 | 3.6 | n/a | — |
| Aluminum flat-rolled sheet shipments | 53,000 mt | 22,500 mt | n/a | — |
You're not wrong in the fact that the spreads available today are considerably higher than what we would have included in our $650 million-$700 million. In time here, in the shorter term rather than longer term, we will address it.— Theresa Wagler, July 21, 2026
Management tone: On the Q2 2026 call, management shifted toward shareholder returns and cash generation while continuing to own setbacks directly. Executives were transparent about the aluminum shipment miss and the second CASH line slip, candid on rising imports, and repeated a deliberate 'more to come' signal on the through-cycle aluminum EBITDA framework.
Management Guidance
Management held FY2026 capex at about $600 million, with H2 2026 capex of $300–$350 million, and guided 2027 capex at $500–$600 million maximum with sustained capital of $250–$300 million. It reaffirmed exit-2026 aluminum utilization of at least 90% monthly, expects aluminum earnings positive in H2 2026, and said Q3 aluminum shipments should be 'significantly improved.' It also expects share repurchases to trend toward Q2's $200 million quarterly pace or higher.
Trajectory
Revenue has accelerated through 2026, with sequential growth of 17.9% in Q1 and 17.0% in Q2, driven by record steel shipments and higher average selling prices. Gross margin was broadly stable at 14.7% in Q1 and 15.7% in Q2, while EBITDA margin expanded from 14.4% to 15.2%. Steel carries the improvement; aluminum remains a small loss, and fabrication margins are temporarily compressed by higher steel input costs.
The Model
The model projects FY+1 revenue of $23,030 million and EBITDA of $3,247 million, a 14.1% EBITDA margin, rising in FY+2 to revenue of $24,610 million and EBITDA of $3,372 million, a 13.7% margin. The FY+1 path is anchored by steel margin recovery and record shipments; FY+2 is driven by continued aluminum ramp toward full 650,000-metric-ton capability and the shift to the optimized product mix in 2027.
| Metric | FY2025 | Next FY (E) | Following FY (E) |
|---|---|---|---|
| Revenue | $18.2B | $23.0B | $24.6B |
| YoY Growth | — | +26.7% | +6.9% |
| EBITDA | $2.0B | $3.2B | $3.4B |
| EBITDA Margin | 11.2% | 14.1% | 13.7% |
Projections are the median of 5 independent model runs. The model’s revenue sits 6.6% above analyst consensus.
Management held FY2026 capex at about $600 million, with H2 2026 capex of $300–$350 million, and guided 2027 capex at $500–$600 million maximum with sustained capital of $250–$300 million. It reaffirmed exit-2026 aluminum utilization of at least 90% monthly, expects aluminum earnings positive in H2 2026, and said Q3 aluminum shipments should be 'significantly improved.' It also expects share repurchases to trend toward Q2's $200 million quarterly pace or higher.
What Could Go Right — and Wrong
- Aluminum achieves earnings positive in H2 2026 and exits 2026 at at least 90% monthly utilization.
- Management formally raises the through-cycle aluminum EBITDA framework above $650–$700 million mill plus $40–$50 million recycling.
- Fabrication backlog converts to higher realized pricing within 6–9 months, supported by a Dodge Momentum Index up more than 30%.
- Trade policy action reduces Asian import pressure and supports domestic steel pricing through Q3/Q4.
- 2027 capex normalizes to $250–$300 million sustained, lifting free cash flow.
- Aluminum ramp stalls again: another shipment miss, a second CASH line delay beyond Q4 2026, or losses persist into 2027.
- Steel imports from three Asian countries continue rising without policy response, eroding domestic pricing.
- Scrap or electricity costs rise sharply and cannot be passed through, compressing steel metal spreads.
- Fabrication backlog converts at lower-than-expected prices despite volume strength.
- Working capital fails to reverse in H2 2026, delaying cash conversion.
Looking Ahead
The next 12 months center on the aluminum ramp and steel margin realization. Management expects Q3 aluminum shipments to be 'significantly improved,' H2 2026 aluminum earnings positive, and exit-2026 utilization at at least 90% monthly. The second CASH line is scheduled for Q4 2026, the third cold mill began producing in July 2026, and a potential update to the through-cycle aluminum EBITDA framework is expected in the shorter term after operations are dialed in.
- Q3 2026Q3 aluminum shipments and steel pricing — Tests whether shipments are significantly improved and lagged flat-rolled pricing lifts steel ASP.
- H2 2026Aluminum earnings positive — Confirms the aluminum ramp reaches profitability after startup costs.
- Q4 2026Second CASH line commissioning — Tests whether automotive qualification ramp stays on track after one-quarter slip.
- Exit 2026Aluminum 90% utilization — Confirms management's December monthly run-rate target.
- January 1, 2027Leadership transition — Wagler becomes CEO; tests continuity of capital allocation and strategy.
- Sometime in 2027Aluminum product mix 45/35/20 — Tests optimized can, automotive, and industrial mix target.
Financials
Annual Summary
| Metric | FY2024 | FY2025 | TTM | YoY |
|---|---|---|---|---|
| Revenue | $17.5B | $18.2B | $20.5B | +3.6% |
| Gross Margin | 15.7% | 13.0% | 14.6% | 270bps |
| EBITDA | $2.4B | $2.0B | $26.2B | -16.3% |
| EBITDA Margin | 13.8% | 11.2% | 13.5% | 265bps |
| Net Income | $1.5B | $1.2B | $1.6B | -22.9% |
| Free Cash Flow | −$24M | $502M | $10.2B | — |
| Net Cash | — | — | — | — |
Key Ratios (Trailing)
- P/E TTM—
- EV/EBITDA TTM—
- EV/Revenue TTM—
- Price/FCF TTM—
- Gross Margin (TTM)14.6%
- EBITDA Margin (TTM)13.5%
- Net Margin (TTM)7.8%
- ROIC13.2%
- FCF Conversion34.4%
- SBC / Revenue0.2%
The Company
Steel Dynamics makes steel products, processes recycled ferrous and nonferrous metals, fabricates steel joist and deck, and is ramping recycled aluminum flat-rolled products. It operates through four reportable segments: Steel Operations, Metals Recycling, Steel Fabrication, and Aluminum Operations. Its structural long products and joist/deck are used in non-residential construction, including data centers, but management does not break out AI or data-center revenue.
The company runs a circular manufacturing model, melting scrap in electric arc furnaces and using recycled scrap as the primary input. It is vertically integrated from scrap to steel and aluminum production, with seven New Millennium fabrication plants and a 650,000-metric-ton recycled aluminum flat-rolled mill in Columbus, Mississippi.
Business Segments
Competitive Landscape
Steel Dynamics describes itself as one of the largest domestic steel producers and metals recyclers in North America, and the largest flat-rolled steel coater in North America. The company's mills consistently run above industry utilization.
Supply Chain
STLD sits between scrap suppliers and non-residential construction, steel distribution, and aluminum end markets. Atkore, Northwest Pipe, and Worthington Steel list STLD as a steel supplier in their own filings.
More on STLD: Earnings recap