The London Metal Exchange has chosen Owensboro, Kentucky as a new US delivery point for copper, a move that expands the exchange's American footprint just as stockpiles build ahead of possible tariffs on refined-copper imports.
A delivery point is a designated city where exchange-listed copper can be stored and physically handed over to settle an LME contract. Adding Owensboro gives traders another location to park metal, joining New Orleans, Baltimore, Chicago, Detroit, and Mobile in the exchange's US network. More delivery points mean less logistical friction for getting copper into the country and keeping it there.
Why inventories are piling up
The timing is no coincidence. LME data show 137,125 metric tons of registered copper sitting in US warehouses, plus another 134,169 tons held "off-warrant" as of October 14. Off-warrant metal is stored in an LME-approved shed but has not yet been registered for delivery against a contract. That gives traders a staging area: if price spreads make it worthwhile, they can quickly register the metal and deliver it.
Analysts at Citibank estimate the broader US copper stockpile, including off-market inventories, at roughly 1.1 million tons. That buildup follows a wave of shipments redirected into the US as market participants positioned for potential tariffs on refined-copper imports. The prospect of tariffs has made the US a more attractive place to hold metal, since any future duty would bite hardest on metal brought in after the fact.
The move also comes as the copper market grapples with broader supply and demand shifts. Copper demand expectations have been buoyed by AI data centers, while smelters are paying record fees for concentrate as raw material supplies tighten. Those forces have kept the metal in focus for investors even as prices have been volatile.
What this means for copper prices
More delivery locations mean more ways to "park" copper inside the US right where any future import tariff would apply. With a large amount of metal already nearby—both registered and off-warrant—the US can look like a storage sink that is easy to feed when global supply is ample.
That dynamic can widen and prolong price gaps between copper priced on COMEX, the US futures exchange, and the LME benchmark. It can also muddy LME time spreads—the price difference between prompt and later delivery—because off-warrant metal can jump onto the exchange register when spreads justify it, making scarcity signals less straightforward.
For everyday investors, the practical takeaway is that copper prices are not just about global supply and demand. Where metal is stored, and how easily it can be delivered, matters for the price differences you see across exchanges and over time. Those spreads can affect the returns of commodity-focused funds and ETFs that track copper futures.
What to watch next
Investors will be watching whether the tariff threat becomes reality, and how quickly the new Owensboro facility comes online. The expansion of delivery points is a sign that the LME expects continued interest in holding copper in the US. It also reflects a broader trend of the LME's efforts to adapt its contracts to changing market conditions, including debates over green copper premiums and data transparency.
Meanwhile, supply disruptions at major mines and output dips in key producing countries continue to shape the global balance. If tariffs are imposed, the gap between US and international copper prices could widen further, and the new delivery point would give traders more flexibility to exploit that gap.
For now, the addition of Owensboro is a logistical upgrade, but it is also a signal: the market is preparing for a world where US copper is priced and stored differently from the rest of the globe.
