CME-LME arbitrage widens amid tariff expectations Improving China, US demand supports sentiment Benchmark copper prices on the London Metal Exchange (LME) remained largely stable this week, edging up by around $70/t or 0.5% w-o-w to $13,615/t on 28 May. Prices were supported by easing concerns over disruptions in the Strait of Hormuz following ceasefire discussions…