The current market distortion reflects a high-stakes hedge against President Trump’s proposed 15% tariff on refined copper, slated for 2027. While traders scramble to secure metal on U.S. soil, the resulting supply shock has pushed cash copper premiums to $434 a tonne, with prompt metal prices nearing $14,500. Despite this activity, Societe Generale estimates only a 14.6% probability that the tariffs will proceed on schedule, suggesting that much of this massive logistical pivot may ultimately be decoupled from actual policy outcomes.

Beyond U.S. protectionist maneuvers, the global supply chain is fracturing under concurrent pressures. Production bottlenecks—ranging from Congo’s export bans and Indonesia’s smelter outages to Chile’s stagnant output—have prevented the replenishment of LME warehouses. This creates a binary outlook for the commodity: if the tariffs move forward, the U.S. will continue to trap metal, deepening the global shortage; if the plan is abandoned, a rapid release of these domestic hoards could trigger a sharp price correction. Ultimately, the market is no longer dictated by industrial demand, but by the gravitational pull of political uncertainty.