November 4, 2026
Steel and aluminum makers fell sharply on reports Trump will halve tariffs on Canadian metals.
What happened
NUE, STLD, CENX and CLF stocks slid after reports President Trump is set to cut import tariffs on Canadian steel and aluminum roughly in half. The rollback partially unwinds trade restrictions that had propped up domestic metal prices. The move was big enough to contribute to a day where roughly 500 billion dollars of market value shifted.
Why it matters
Lower tariffs mean US manufacturers pay less for Canadian metal, easing their input costs, but they strip away the competitive shield domestic mills have enjoyed. Those tariffs kept cheaper foreign steel from flooding in, letting American producers charge more. Halving them signals trade tensions with Canada are cooling, which pushes the price premium built into US steel stocks back down.
The case against
The tariff cut is a partial rollback, not a full removal, so a meaningful trade barrier stays in place. Steel stocks may have overreacted if a broader infrastructure buildout or strong domestic demand keeps mills running near capacity anyway.
What settles it
Watch whether actual Canadian import volumes spike in the weeks after the new tariff rate takes effect.