Half a million tonnes of copper is sitting in US warehouses, and the traders who put it there are starting to wonder whether they’ve built a hedge, or a trap.

JX Advanced Metals, Mitsui Kinzoku, Marubeni and Mitsubishi Materials(MMC) inked a deal to integrate MMC’s copper concentrate procurement and related products sales business into Pan Pacific Copper (PPC), marking a significant consolidation of Japan’s copper concentrate purchasing sector amid persistent pressure from weak treatment and refining charges (TC/RCs).

Copper producers, including Atlas Mining, reported higher earnings in the first quarter of 2026 on the back of elevated copper prices, while concentrate output declined at several operations in Chile, Brazil, Colombia and the Philippines due to lower ore grades and disruptions, according to company results reviewed by Fastmarkets.

On Wednesday May 6, a critical minerals panel at Commodities Trading Week in London said metals markets are shifting from an energy transition-led narrative toward security of supply, leaving Europe particularly exposed because of its reliance on imports.

Own-sourced copper output from Glencore’s African copper assets — KCC and Mutanda in the Democratic Republic of Congo — surged by 68% year on year to 67,900 tonnes over the same period, while Glencore’s cobalt production fell by 39% year on year amid the DRC’s export quota system.

Copper’s long-term outlook is constrained by the industry’s limited ability to bring new supply online fast enough to meet rising demand, with permitting delays, higher capital costs and policy risks slowing project development, industry executives said at the FT Commodities Global Summit on Wednesday April 22.