Donald Trump's mooted 50% tariff on copper imports into America has sharply exacerbated what was already a dislocation between New York and London prices for the metal. The chart shows that since Trump's inauguration traders have been placing a greater premium on the COMEX contract,

London copper prices edged higher in early trading as the market weighed the impact of Trump’s 50% import tariff on the metal.

While the cost of copper is going up for American businesses and consumers, the rest of the world is scratching its head while it enjoys a considerable discount on the price of copper.

U.S. President Donald Trump's 50% tariff on copper has placed a record premium on prices of the metal in the United States that is likely to ease over the coming months as a stockpile created by traders anticipating the levy works through the system.

President Trump's threatened 50% copper tariffs have boosted prices for the metal in the U.S. far ahead of anywhere else, lifting the premium to roughly one quarter. Copper futures mainly trad

President Trump is amping up trade threats, again unveiling a new batch of letters to country leaders outlining tariffs on goods imported from their countries beginning in August and a warning to BRICS nations.

Copper futures (HG1:COM) extended their rally on Thursday, rising around 2% as traders reacted to U.S. President Donald Trump’s announcement of a 50% tariff on imported copper, set to take effect on August 1.