Why in news?

Copper prices recently rose to an all-time high of $14,708 per tonne, even though the global economic outlook is uncertain because of trade disputes, the conflict in West Asia and general instability.

Three-month copper futures on the London Metal Exchange (LME) stayed above $14,000 per tonne for most of August before climbing further in September. As per the experts, this rally is driven less by economic optimism and more by anticipation of US tariffs on refined copper.

What’s in Today’s Article?

• A Rally After Volatility
• Why Copper Prices Matter?
• The Real Driver: Anticipation of US Tariffs
• Stockpiling and the Inventory Shift
• The Arbitrage Factor
• Supply Constraints and the Outlook
• Other Factors
• Conclusion

A Rally After Volatility

• The rise follows a turbulent period:
  • Copper crossed $12,000 per tonne in December 2025, recording its biggest annual gain since 2009.
  • Prices cooled to $11,929.5 per tonne in March 2026 amid fears that higher energy costs from the West Asia conflict would slow global growth and weaken demand for industrial commodities.
• The current surge has reversed that decline sharply.

Why Copper Prices Matter?

• Copper, often called the "red metal", is essential to the modern economy. Its uses span:
  • Housing and manufacturing
  • Power grids and clean energy
  • Artificial intelligence infrastructure
  • Defence
• Because of this wide industrial use, copper prices are treated as a barometer of economic health.
• Rising prices normally signal robust growth, while falling prices raise fears of a slowdown.
• Copper is sometimes nicknamed "Dr Copper" for this reason. However, the present rally tells a different story.

The Real Driver: Anticipation of US Tariffs

• Industry insiders say the surge stems mainly from concerns over potential US tariffs that could take effect from January 2027. These expected duties are already reshaping trade flows and inventories.
• The tariff picture so far:
  • In August 2025, President Donald Trump imposed a 50 per cent tariff on semi-finished and derivative copper imports.
  • Refined copper has so far been exempt.
  • A proposal now exists to impose a 15 per cent tariff on refined copper imports from January 2027, rising to 30 per cent in 2028.

Stockpiling and the Inventory Shift

• In anticipation of tariffs, traders are moving copper out of LME warehouses into US COMEX (Commodity Exchange) warehouses.
• This has created a shortage of tradeable copper stocks on the LME and pushed futures prices up.
• The current inventory distribution highlights the imbalance:
  • LME: about 2,65,000 tonnes
  • Shanghai Futures Exchange (SHFE): about 63,000 tonnes
  • US COMEX: about 7,00,000 tonnes
• Refined copper has been "front-loaded" into the US market amid tariff uncertainty, while low inventories in London and Shanghai indicate tighter availability outside the US.

The Arbitrage Factor

• The price gap between exchanges has created arbitrage opportunities. Arbitrage arises when the same commodity is priced differently in two markets.
• Traders buy copper in the cheaper market and sell it simultaneously in the costlier one, profiting from the difference.
  • The current LME-COMEX gap is estimated at $400–500 per tonne.
• However, industry sources stress that arbitrage is only a secondary factor. The primary driver is stockpiling ahead of the expected tariff.

Supply Constraints and the Outlook

• Analysts identified two additional reasons for elevated prices: constrained mine supply and the ongoing geographical rebalancing of inventories.
  • Chile’s copper shipments fell to their lowest level in more than a year in August despite the sharp increase in prices.
• But they also flagged a downside risk. If the US tariff is delayed significantly or set lower than expected, the inventory flows could reverse.
• Accumulated US stocks would then flood global markets, pushing prices down and squeezing the profitability of upstream producers.

Other Factors

• AI and data centres: The rapid expansion of artificial intelligence infrastructure is creating additional demand for copper.
  • Data centres use the metal in power systems, cooling infrastructure and network equipment.
• Power grids and renewable energy: Global investments in electricity transmission and distribution networks, renewable energy projects and battery storage are also supporting copper demand as economies expand electrification.
• Electric vehicles: EVs require significantly more copper than conventional internal combustion engine vehicles, with industry estimates suggesting they use roughly six times as much copper.

Conclusion

The record copper price is a product of tariff anticipation, cross-border stockpiling and supply constraints rather than strong economic fundamentals.

This shows how trade policy can distort commodity markets independent of demand. For India, which is racing alongside China and the US to secure copper supplies, sustained high prices raise input costs for power, infrastructure and clean energy sectors.