Base metals fall in Shanghai night session; tin drops 5.55%

Tin's outsized decline stands apart from the broader base-metals pullback, a dispersion that points to metal-specific pressure rather than a single macro driver. The uniformity of losses across copper, aluminium, zinc and lead nonetheless suggests a shared risk-off tone in Shanghai's night session. Whether tin's underperformance reflects a one-session dislocation or a sustained re-rating is the open question, and the spread between tin and stainless steel — down only marginally — is worth monitoring.