Steel and materials stocks swung between rallies and pullbacks as the US-Canada trade relationship shifted from near agreement to open dispute, with the US imposing 50% tariffs on a wide variety of Canadian exports on August 22. Nucor Corporation and Cleveland-Cliffs Inc. rose on August 25 after talks between the two countries broke down, a reversal from the prior week when several of the same stocks fell on hopes a deal would lower steel and aluminum tariffs; the VanEck Steel ETF gained 1.6% that day while the State Street Materials Select Sector SPDR hit an intraday high, though by week's end the materials ETF had slipped to negative territory and the steel ETF was about flat, with both still substantially up for 2026. The escalation followed a Bloomberg report on August 19 that the US and Canada had tentatively agreed to cut tariffs on Canadian steel and aluminum to 25% and vehicle charges to 15%, before Canadian Prime Minister Mark Carney declared Canada officially "at war" with the United States and Ottawa announced counter-tariffs of C$27.6 billion on American goods, effective September 8 at rates of 15% to 50%. Moody's chief credit officer Atsi Sheth said, "Expect much more of this uncertainty for some time to come." Nucor, which relies primarily on scrap-based electric arc furnace steelmaking, is up more than 50% year-to-date, while the vertically integrated Cleveland-Cliffs remains negative for 2026 despite similar structural insulation, which analysts attribute to balance sheet stress rather than tariffs.
Cleveland-Cliffs IncUS 50% tariffs on Canadian exports and collapse of the deal to cut steel/aluminum tariffs benefit domestic steelmakers like Cleveland-Cliffs.
Nucor CorpNucor rose as the US-Canada trade talks broke down and 50% tariffs were imposed, shielding domestic steel from Canadian competition.
