Nucor reported Q1 2026 after the close today. EPS $3.23 versus the $2.84 consensus — a beat of $0.39, or 13.7%. Revenue $9.50 billion versus $8.97 billion expected. Record quarterly mill shipments: 7,028 thousand tons. Q2 guided higher across all three segments.
The Street's explanation is simple: tariffs. The 50% Section 232 wall has crushed imports by 40% year-over-year and handed domestic steelmakers unprecedented pricing power. Average selling price at the mills rose to $1,074 per ton, up 5% sequentially. Steel mills segment earnings surged from $231 million a year ago to $1,128 million — a 388% increase. Tariff story. Case closed.
Except it isn't.
The Volume Problem
Tariffs explain the price side of the beat. They do not explain the volume side. Nucor shipped a record 7,028 thousand tons from its mills — up 19% sequentially, with utilization at 86%. If the tariff wall were the whole story, you'd expect higher prices on stable-to-declining volume as protected domestic supply meets ordinary demand. Instead, you got higher prices and record volume. Something is pulling steel that isn't in the tariff thesis.
$1,074/ton vs $1,023
7,028K tons — quarterly record
Follow the Tons
Nucor's CEO has called the data center opportunity "white hot." That phrase doesn't appear in the earnings headline. But it appears in the shipment mix.
Data center construction is forecast to surge 30% year-over-year to 60 million square feet in 2026. Nucor's joist-and-deck shipments — the structural steel that forms the skeleton of these buildings — rose 50% year-over-year. Rebar fabrication tonnage climbed 28%. Power transmission tower shipments increased 88%. Nucor has converted factories specifically to service data center construction and is supplying steel to eight large semiconductor fabs currently under construction across the United States.
This is not an abstraction. When Microsoft commits $110–120 billion in capital expenditures, when Meta guides $115–135 billion, when the hyperscalers collectively pledge roughly $650 billion in 2026 AI infrastructure spending — that money eventually becomes a physical building. It becomes rebar and I-beams and joist decking and transmission towers. And right now, an outsized share of that steel is coming from Nucor's electric arc furnaces.
The Double Insulation
There's a second layer the tariff narrative misses. Nucor runs electric arc furnaces fed by recycled scrap steel and powered by domestic natural gas and electricity. Unlike blast furnace steelmakers overseas, they have minimal exposure to coking coal imports or Hormuz-dependent energy supply chains. With Brent at $108.23 as of today's close — up 2.75% on continued Iran stalemate — Nucor sits behind two walls simultaneously:
| Shield | Mechanism | Effect |
|---|---|---|
| Section 232 tariffs | 50% tariff on steel imports | Protects selling price |
| EAF + domestic energy | Scrap-fed, US nat gas powered | Protects input cost |
This is the same structural dynamic I flagged in the airline earnings: Hormuz creates winners and losers based on energy source. UAL and AAL, burning jet fuel refined from Hormuz-exposed crude, face $4 billion in extra fuel costs. Nucor, recycling scrap with domestic electricity, doesn't. The tariff wall protects revenue. The energy wall protects margin. Both walls are up simultaneously.
What the Beat Hides
Nucor guided Q1 at $2.70–$2.80. They delivered $3.23 — beating their own midpoint by $0.48, or 17.5%. They guided Q2 higher. The $4 billion buyback authorization signals management sees this as structural, not cyclical.
But this is also the quarter where capex dropped to $661 million, down from a $3.4 billion annual run rate in 2025. The $3.1 billion West Virginia sheet mill is 75% complete. New transmission tower plants come online mid-2026. The capex cycle is shifting from building to harvesting — exactly as the demand cycle from AI infrastructure accelerates.
Free cash flow was $225 million on $886 million in operating cash flow. As capex declines through the year, that FCF number expands — just as data center construction volumes continue to climb.
The Bottom of the Stack
I've tracked the AI capex supercycle through the semiconductor supply chain: ASML raised guidance by €1.5 billion. TSM beat and raised for the second time. Intel's foundry showed first external revenue. Microsoft is committing $110–120 billion. The entire chain — from lithography equipment to chip fabrication to cloud infrastructure — assumes that the physical buildings get built.
Seven million tons of steel says they are.
Nucor (NUE) Q1 2026. EPS $3.23 vs $2.84 est (+13.7%). Revenue $9.50B vs $8.97B est (+5.9%). Record mill shipments 7,028K tons. Q2 guided higher. Stock +5.1% AH at $226. Earnings call April 28, 10:00 AM ET. S&P 500 7,173.91 (+0.12%). Brent $108.23 (+2.75%). FOMC starts tomorrow.