Downstream Demand and Corporate Strategies – Clear Winners Emerge

Despite extreme supply-side volatility, U.S. copper demand in August–September showed resilience. Manufacturing overall remained soft, but sectors such as power infrastructure, data centers, and electric vehicles (EVs) continued to support copper use. Grid upgrades and renewable energy projects sustained demand for copper cable and busbar. Rapid growth of AI-driven data centers pushed copper busbars into allocation. Meanwhile, EV sales hit record levels, further boosting copper-intensive applications. By contrast, seasonal slowdowns in air conditioners and appliances reduced copper coil and tube demand, while high copper prices encouraged limited substitution with aluminum.

Corporate strategies shifted quickly. With semi-finished copper imports effectively priced out, U.S. manufacturers pivoted to importing refined cathodes and processing them domestically. Major local producers such as Southwire and Cerro Wire raised copper wire prices by ~5% in August, capturing the tariff premium. Prysmian, with large U.S. plants, also noted improved margins as imported wire and cable became uncompetitive. U.S. copper fabricators emerged as the clear winners of the tariff regime.

Market sentiment flipped from panic to caution. July’s extreme price distortion drove frenzied stockpiling, but after the refined copper exemption, traders turned cautious. Many are now managing swollen inventories, with some exploring re-exports to global markets. At the same time, smelter exports fell and bonded copper began flowing back abroad.

Looking ahead, the U.S. market will likely remain in destocking mode through the rest of 2025, with imports subdued. Global copper flows—disrupted by U.S. stockpiling—are expected to gradually normalize. In the longer term, if the U.S. proceeds with potential tariffs on refined copper in 2027, the market could face another seismic shift. For now, the U.S. copper market has entered a “high inventory, low import, resilient demand” equilibrium, with domestic fabricators as the biggest beneficiaries.