Copper, Aluminum Lead Base Metals Lower in Overnight Trading

The breadth of the overnight decline matters more than copper's 1.41% move: every major base metal on the Shanghai board fell, and aluminum's supply chain — alumina, aluminum alloy and the metal itself — accounted for the three steepest drops. That pattern points to a sector-wide repricing rather than a single-metal story, and it lands hardest on industrial consumers whose input costs track these contracts. Whether the aluminum complex keeps underperforming the rest of the complex, or converges back toward copper and zinc, is the open question worth watching.