Copper advanced in New York and London to kick off a crucial month ahead of the Trump administration’s deadline to make a fresh determination on launching US import levies.
Copper climbed toward $14,000 a ton and aluminum advanced to its highest in more than four years as the unresolved conflict in the Middle East and optimism over demand powered gains.
Aluminum products at the Rio Tinto Alma aluminum smelter in Alma, Quebec, Canada, on Thursday, May 28, 2026. The Saguenay–Lac-Saint-Jean region is responsible for close to half of Rio Tinto’s global aluminum production.
Copper edged higher after a rise in orders for metal in London Metal Exchange warehouses, bucking a broader downtrend on the exchange as traders weighed US President Donald Trump’s fraught push to reach a peace deal with Iran.
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