Copper prices on the London Metal Exchange (LME) have fallen below $14,000 per tonne, marking a notable retreat in the commodity's recent rally. This decline comes amid a significant increase in on-warrant inventories, which has helped alleviate the previous supply constraints, according to FX Street.

ING also highlighted that the surge in on-warrant stocks is easing the supply squeeze that had supported higher copper prices. The buildup in inventories suggests a loosening of market tightness, prompting the price correction.

For Japanese investors, who closely monitor copper due to its importance in industrial manufacturing and export sectors, this price movement may signal shifting dynamics in the global supply chain and commodity markets impacting FX and equities.