Nucor's Steel Boom Reaches Beyond Data Centers as Imports Rise

Nucor's third quarter showed why management is describing the current steel market as unusually broad. Revenue rose 32% from a year earlier to $11.25 billion, while net earnings more than doubled to $1.32 billion from $607 million. Diluted earnings reached $5.80 a share, and steel mill shipments exceeded 7.2 million tons for a third consecutive quarterly record. Across the company, external shipments totaled 7.533 million tons at an average sales price of $1,493 per ton.

The headline matters, but the composition of demand matters more. On the October 27 earnings call, Chief Executive Leon Topalian said Nucor was seeing the strongest demand environment across its product range in his 31 years at the company. Data centers account for about 15% of Nucor's backlog, according to management. That leaves most of the order book tied to other markets, including utility infrastructure, semiconductor plants, natural gas and nuclear power, liquefied natural gas terminals, pharmaceuticals, shipbuilding, defense, appliances, heating and cooling equipment, and heavy machinery.

That breadth reduces one obvious risk in the Nucor story: dependence on a single AI construction cycle. Steel products backlog rose about 25%, management said. President and Chief Operating Officer Steve Laxton pointed to three longer-lived demand engines: infrastructure, the return of manufacturing construction, and energy investment. Utilities plan to spend nearly $1.4 trillion over five years, he said. Nucor's tubular shipments rose 82% from a year earlier, while the backlog for towers and structures more than doubled during 2026 and now extends into the first quarter of 2028.

The quarter also showed evidence of market-share gains. Nucor's flat-rolled shipments to automotive customers increased 4% in the first nine months of 2026 even though North American vehicle production was roughly unchanged. That is encouraging, but it is not the same as a growing end market. The company must continue winning business from competitors for that advantage to persist.

Imports are the more immediate challenge. Finished-steel imports were down more than 13% from a year earlier, according to management, but they rose in recent months. Topalian highlighted a surge from South Korea despite Section 232 tariffs. Import share increased from about 14% in the fourth quarter of 2025 to roughly 17%. Those figures are not contradictory: total imports can be lower than a year ago while still taking a larger share of a weaker or differently timed domestic market. If the recent share gain continues, it could limit domestic pricing even with healthy project demand.

High utilization brings its own pressure. Chief Financial Officer Jack Sullivan cited higher costs for consumables, freight, energy and services, and told analysts to expect a modest increase in conversion costs in the fourth quarter. Nucor expects fourth-quarter earnings to be generally in line with or modestly above the third quarter, with higher realized prices offset by seasonal volume declines and higher costs.

Cash generation gives Nucor room to manage that trade-off. The company produced about $2.7 billion of free cash flow through the first nine months of 2026 and returned nearly $1.4 billion to shareholders. It ended the quarter with $3.64 billion of cash and short-term investments, plus an undrawn $2.25 billion revolving credit facility. The West Virginia sheet mill produced its first heat in September, and a second galvanizing line at Nucor Steel Berkeley recently began operating.

Management expects 2027 to be stronger than 2026, which it says is shaping up as the third-best financial year in Nucor's history. That outlook is plausible if the new capacity ramps into the broad backlog already in hand. The test is whether higher imports and conversion costs absorb the benefit before those projects translate into sustained shipments and cash flow.