The global copper market is signaling a clear supply deficit for 2026, creating a complex and volatile environment for investors.
At the heart of this issue are significant constraints on the supply side. First, we've seen major disruptions at key mines. A mudflow at Freeport's Grasberg mine, one of the world's largest, forced the company to cut its sales guidance and declare force majeure. This single event removed a substantial amount of expected mine supply from the 2026 forecast. Second, Chinese smelters, which are crucial for turning raw copper concentrate into refined metal, are planning to cut production by over 10%. This isn't a voluntary decision; it's a reaction to collapsing processing fees, known as TC/RCs, which have turned negative, making it unprofitable to smelt. Finally, major mining companies like Glencore and Southern Copper have also guided for lower output in 2026, compounding the overall shortfall.
Adding another layer of complexity is a major inventory dislocation caused by U.S. trade policy. In 2025, the U.S. government used Section 232 to impose tariffs on certain copper products. This prompted a massive inflow of copper into U.S. warehouses (COMEX) as buyers rushed to import before the tariffs took full effect. The result is a fractured market: the U.S. is sitting on record-high stockpiles, while the rest of the world is running lean. This creates pockets of “localized scarcity” and keeps prices jumpy outside the U.S., even when global inventory totals might look adequate on paper.
So, what does this all mean? While different analysts have slightly different numbers—the industry group ICSG forecasts a 150,000-tonne deficit, while JPMorgan's latest call is a much larger 330,000-tonne gap—the direction is undisputed. Demand for copper continues to rise, fueled by the global transition to green energy, grid buildouts, and the expansion of data centers. With supply growth failing to keep pace due to the disruptions and policy effects we've discussed, the market balance remains fundamentally tight. This points toward continued price volatility and the potential for sharp price spikes, especially in markets outside the U.S. that are feeling the inventory pinch most acutely.
- TC/RCs (Treatment and Refining Charges): Fees that mining companies pay to smelters to process their copper concentrate into refined metal. When these fees fall or turn negative, it signals a tight market for raw materials, making it unprofitable for smelters to operate.
- Section 232: A part of the U.S. Trade Expansion Act of 1962 that allows the President to impose tariffs on imports if they are deemed a threat to national security. It has been used to protect domestic industries.
- Force Majeure: A legal clause in contracts that frees parties from liability or obligation when an extraordinary event or circumstance beyond their control, such as a natural disaster, prevents them from fulfilling their obligations.