Copper took a step back on Thursday, as a combination of easing supply worries, a slide in AI-related tech stocks, and a hotter-than-expected US inflation reading prompted traders to lock in profits. Three-month copper on the London Metal Exchange (LME) fell 0.9% to $14,360 a metric ton, after dipping as low as $14,289. The most-traded Shanghai contract dropped 1.9%.
The pullback comes after a period of strong gains, driven by concerns about supply disruptions and optimism about demand from the energy transition and AI-driven data center buildout. But Thursday's session showed how quickly sentiment can shift when multiple forces align.
What's driving the move?
Two main factors are at play. First, worries about supply disruptions eased after BHP and the supervisors' union at the Escondida mine in Chile reached a deal to avoid a strike. Escondida is the world's largest copper mine, so any prolonged stoppage there would have tightened global supply. With that threat removed, some of the risk premium that had been built into copper prices faded.
Second, US inflation came in stronger than expected. That matters because it can keep the Federal Reserve cautious about cutting interest rates. When the Fed holds rates higher for longer, the US dollar tends to strengthen, and financing costs rise. Both are headwinds for industrial metals like copper, which are priced in dollars and often used in projects that rely on cheap borrowing.
Ole Hansen, head of commodity strategy at Saxo Bank, noted that traders were digesting both forces at once. The combination of less supply anxiety and a more hawkish Fed outlook gave investors a reason to take profits after copper's recent run.
Technical pressure builds
Hansen also flagged a technical pressure point: copper is testing the uptrend that started in March and has slipped below its 50-day moving average, a widely watched trend line. When that kind of support cracks, selling can shift from a debate about mines and demand to a fast “positioning clean-out,” where stop-loss orders and trend-following funds add to the move.
In plain terms, a break below a key technical level can trigger automatic selling from computer-driven strategies. That can make the next move bigger than the supply or demand headline that started it. And it can spill over into other base metals—aluminum, zinc, nickel, and tin—as “risk-off” positioning hits the whole LME base-metals group at once.
What it means for investors
For everyday investors, copper's pullback is a reminder that commodity prices are driven by more than just supply and demand. Macroeconomic data, central bank policy, and technical trading all play a role. The hotter inflation print is part of a broader theme that has been rattling markets, including AI stocks, which have also slid on rate fears. That connection is not coincidental: copper is often seen as a bellwether for global economic health, and AI infrastructure is a major source of demand for the metal.
If copper convincingly breaks below its 50-day moving average, the $14,289 level could become a flow-driven level, where the price action is driven more by automated trading than by fundamentals. That could create volatility not just in copper, but across the broader metals complex.
For now, investors will be watching whether copper can hold above its recent lows. The outcome may depend on upcoming economic data and any further developments in the AI trade, which has been a key driver of copper demand expectations. As doubts about the debt-fueled data center boom persist, the outlook for copper demand becomes less certain.
In the meantime, the pullback offers a case study in how quickly market sentiment can turn. A single inflation print, a labor deal at a mine, and a technical level can combine to move prices in ways that surprise even seasoned traders. For ordinary investors, the takeaway is to understand that commodity prices are influenced by a complex web of factors, and that short-term moves can be amplified by positioning and momentum.
As always, it's important to keep a long-term perspective. Copper remains a critical metal for electrification and renewable energy, and its fundamental demand story is intact. But in the near term, the market is at the mercy of data, central banks, and the whims of algorithmic traders.
