The mechanism: Since 2025's Proclamation 10947 doubled Section 232 steel duties to 50%, reinforced by 2026's Proclamation 10984 extending the regime to more derivative products, imported steel entering the U.S. carries a tariff that domestic mills don't. That's a direct subsidy on domestic steel pricing power — every automaker, appliance maker, and construction firm buying steel in the U.S. now pays a mill-favorable price, whether they wanted the policy or not. For an industry like autos, where steel can run 900-1,000+ pounds per vehicle in body structure alone, that's real money moving from OEM margins to steel-company income statements. Except for one automaker whose body-in-white barely uses the stuff.
Who cashes in: Nucor (NUE) and Steel Dynamics (STLD), the two largest U.S. electric-arc-furnace producers, capture the tariff wall almost as pure pricing power — domestic hot-rolled coil trades at a persistent premium to world price precisely because imports are penalized, and both companies sell overwhelmingly into the protected domestic market. Cleveland-Cliffs (CLF), the dominant supplier of automotive-grade sheet steel to Detroit, is the most direct beneficiary of the auto angle specifically — it's the steel supplier F-150 and Silverado bodies are built from, and it has repeatedly lobbied for exactly this kind of protection.