Night trading: copper up 1.05%, aluminum up 0.80%

The broad upward move across base metals, led by alumina and copper, points to a risk-on session driven by supply-side or macro sentiment rather than a single metal-specific catalyst. The lag in tin and stainless steel suggests selective positioning, not uniform demand strength. For market participants, the key question is whether this momentum reflects durable physical buying or short-term speculative flows, especially given the varied magnitudes across contracts. Watching how Shanghai and London prices correlate in the coming sessions will clarify whether the move is globally coordinated or exchange-localized.