SHFE tin posted the largest single-day gain of any base metal in 2026, surging 8.38% to 415,370 CNY/mt. The move was triggered by a wave of speculative buying that saw volumes reach 174,856 lots, 85% above the 20-day average. Open interest on SHFE tin rose 3%, confirming fresh buying rather than short-covering.
LME tin followed the SHFE lead, rising to $53,350/mt on the cash contract. Three-month metal was at $53,460/mt in a narrow contango. The LME move was more subdued due to reasonable physical availability outside China, but the SHFE-LME arbitrage has now opened a significant premium for Chinese deliveries.
LME tin stocks remain critically low at 8,850t, enough to cover less than three weeks of global consumption at current run rates. Stocks fell 40t on the day, extending the downtrend. Tin has the lowest stock-to-consumption ratio of any LME base metal, making it structurally vulnerable to price spikes.
The tight physical supply in China reflects reduced concentrate availability from Myanmar's Wa State region, where political instability has disrupted mining operations. Myanmar typically supplies 30% of China's tin concentrate imports, but shipments have fallen 40% year-on-year in 2026.
Tin is the most volatile base metal and the most supply-constrained. Buyers must be proactive: extend coverage to 12-16 weeks given the structural supply risk from Myanmar and critically low LME stocks. Use LME futures for hedging, not SHFE, given the SHFE premium distortion. Consider buying call options to protect against another 8% day.