Is the Copper Bull Market Finally Running Out of Time?
A collision of overflowing physical warehouses, the death of a lucrative tariff arbitrage, and aggressive Chinese substitution is testing the resilience of record-high copper futures.
The global copper market is currently experiencing a spectacular identity crisis. On paper, futures prices are flying high in the thin air of near-record levels, propped up by investors dreaming of a greener, electrified future. But step into a physical warehouse, and you will find a very different, much heavier reality: a mountain of unsold metal.
A stark bearish mood is sweeping through the physical trading floors. Even before the intensifying conflict in Iran sent shivers through global growth forecasts, copper sellers were already sweating. They are currently caught in a jarring disconnect. The real-world market is visibly oversupplied, yet the futures market remains stubbornly bullish. The million-dollar question for traders right now is exactly how long this cognitive dissonance can last.
The great tariff arbitrage of 2025 has officially unraveled, serving as the core catalyst for this physical glut. For the better part of a year, the looming threat of tariffs from President Donald Trump created a highly lucrative game for traders. They hoarded metal and directed massive volumes toward US ports, sparking an unprecedented bidding war and leaving the rest of the world seemingly short on supply. But when the administration opted against broad critical mineral tariffs in January, the music stopped. The premium for US copper futures evaporated, and spot contracts on the London Metal Exchange are now trading roughly on par with New York's Comex.
Consequently, major trading houses are aggressively reversing course. Players like Mercuria Energy Group and IXM, a subsidiary of CMOC Group Limited, alongside Trafigura, previously diverted vast quantities of African copper to the US. Today, these firms are delivering cargoes straight into LME warehouses. Total inventories across the world's main exchanges have ballooned by over 500,000 tons since the new year, pushing LME stockpiles to a 17-month high and driving privately held Chinese stockpiles to levels unseen since 2016.
Speaking of China, the world's largest copper consumer is aggressively pushing back against sky-high prices, causing severe demand destruction. Major fabricating mills are keeping their inventories razor-thin, citing weak orders and massive price exposure. Several top clients of the Chilean mining giant Codelco outright rejected a steep $350-a-ton premium for 2026 supplies. The friction has made this year's negotiations the hardest in decades.
Manufacturers are not just complaining; they are adapting. Substitution is the new name of the game. Wanbao Air Conditioning recently launched a new model replacing traditional copper cooling tubes with a cheaper aluminum-zinc alloy. Retailing at a highly competitive 999 yuan, it is proving that when copper prices defy gravity, industrial buyers will simply engineer the red metal right out of their products.
Meanwhile, miners in the Democratic Republic of Congo are scrambling. With the US arbitrage dead, they are seeking alternative buyers in a market where demand is seasonally tepid. Equivalent-quality African cargoes are now selling at widening discounts, adding to the immense strain on the physical market. Mark Hansen, chief executive of Concord Resources, aptly noted that while copper suffers from well-documented underinvestment in new supply, the market is currently operating in "thin air" and is primed for a bear trade.
The macroeconomic weather is not helping the bulls either. The escalating war in Iran has strengthened the dollar and triggered stock market selloffs. Rising fears of inflation and aggressive interest rate hikes are spooking bond markets. Analysts at JPMorgan Chase & Co. (NYSE: JPM) recently conceded that their conviction in a bullish copper trajectory has taken a hit, pointing to weakening fundamentals and cold Chinese demand. Until the physical glut clears, the paper bulls might want to look down, because the ground is a lot further away than it appears.
Source:
- Bloomberg News, "A copper market awash with metal sours traders’ bullish mood," March 6, 2026.