Steel Dynamics shares reverse gains, fall 1.2% on tariff report

The reversal matters more than the headline drop: steel names initially read eased Canada tariffs as relief, then flipped, suggesting the market is unsure whether tariff softening helps demand or undercuts the domestic pricing protection that has supported US producers. This splits the sector's constituencies — integrated mills like Steel Dynamics and Nucor versus tariff-exposed downstream buyers. Whether the reported US-Canada deal actually materializes, and its scope on steel versus autos, is the open question shaping how the group trades.