Copper prices rebounded after hitting a three-week low on Tuesday, as investors took advantage of lower prices, while U.S. prices outperformed on speculation about possible tariffs on the metal. Benchmark three-month copper on the London Metal Exchange added 0.3% to $13,038 per metric ton by 0930 GMT, after hitting its lowest level since April 13 at $12,780. Trading activity was muted, with the Shanghai Futures Exchange closed for the Labour Day holiday. Copper prices rebounded after hitting a three-week low on Tuesday, as investors took advantage of lower prices, while U.S. prices outperformed on speculation about ... (full story)