Marubeni Corporation, a major trading company in Japan, reported that aluminum inventories at Japan's three major ports reached 323,600 tons by December 2024, up by 13.2% from the previous month. Among them, Nagoya port had the highest inventory, with 163,100 tons, followed by Yokohama port’s 141,000 tons and Osaka port’s 19,500 tons.

This increase reflected changes in supply and demand, influenced by global market changes such as production adjustments, trade policies, and fluctuating downstream demand.

Historical data showed that changes in aluminum inventories have shown cyclical patterns, responding to market conditions and economic recovery.

Additionally, production adjustments and policy changes, like stricter environmental standards, also impact the aluminum market and inventory levels, with producers adjusting their production capacity based on market trends to balance supply and demand.