LME base metal inventory data shows increases in copper and nickel and decreases in zinc lead and tin

Summary

LME data as of August 20, 2026, shows a continued divergence in base metals: copper and nickel inventories rose by 3,950 and 2,946 tons respectively, while lead (-1,475t), zinc (-650t), and tin (-130t) saw further drawdowns Wallstreetcn. This follows a massive 15,725-ton copper inventory spike recorded on August 19 .

Impact Analysis

The real story here isn’t just the daily fluctuations; it’s the massive shift in copper sentiment over the last few days. We went from broad inventory digestion on August 10 to a staggering 15,725-ton copper influx on the 19th . This suggests a major delivery or a sudden evaporation of spot demand, signaling that the ‘tight supply’ narrative for copper is hitting a wall. Meanwhile, lead and zinc are doing the opposite, with lead seeing consistent drawdowns nearly every day this week Wallstreetcn. I’d read this as a clear divergence: copper and nickel are starting to look oversupplied as LME stocks climb, while the persistent draws in lead and tin indicate underlying physical tightness that the market might be ignoring in favor of the copper headline. Keep an eye on the lead/zinc spreads; if these drawdowns continue against the copper glut, we’re looking at a significant decoupling in base metal pricing.