The London Metal Exchange zinc market has reached new heights, with the three-month zinc contract climbing to $3,858 per tonne on August 25, 2026, marking a four-year high. This persistent strength comes despite expectations at the beginning of the year that prices would decline, according to reporting from Reuters. Market tightness remains a defining characteristic of current zinc trading conditions.
The premium for cash-delivery zinc has reached $131 per tonne, reflecting significant supply constraints. This compares to October 2025 when the indicator hit a record $323 per tonne. Traders holding short positions continue to face considerable risks as the market remains under upward pressure.
Global zinc demand is growing at a modest pace. According to the International Lead and Zinc Study Group, metal consumption during January-May 2026 increased by only 1.5% compared to the same period in the previous year. However, refined zinc output expanded by 3.5 during the same timeframe, resulting in an estimated global supply surplus of approximately 145,000 tonnes for the first five months of the year.
China has accounted for most of the increase in global zinc production. Western zinc smelters have encountered disruptions in raw material supplies and face substantial pressure on profitability due to declining concentrate treatment charges. Consequently, the majority of the global surplus metal remains concentrated within the Chinese market.
Zinc inventories on the Shanghai Futures Exchange have more than doubled since January, reaching 155,954 tonnes. London Metal Exchange inventories, including metal held in warehouses outside the warrant system, stand at 124,677 tonnes, representing a decline of 6,500 tonnes from the beginning of the year despite recent daily deliveries to exchange warehouses. China's transition from major importer to exporter represents a structural shift in global zinc markets.
In 2024, China imported 445,000 tonnes of refined zinc. This fell to 299,000 tonnes in 2025, a decline of approximately one-third. Beginning in November and December 2025, China became a net exporter, directing zinc to London Metal Exchange warehouses in Singapore and Taiwan to capitalize on elevated immediate-delivery prices in London.
In July 2026, China resumed net exporter status, with net exports totalling 4,100 tonnes according to Shanghai Metals Market data. Hong Kong has emerged as a crucial channel for zinc arbitrage shipments from China. The city was approved for metal deliveries meeting London Metal Exchange standards in January 2025, and its first warehouse began operations in July 2026.
Approximately two-thirds of recent warrant deliveries have been directed to Hong Kong, with an additional 5,000 tonnes stored there outside the warrant system. Since the beginning of last week, zinc has been placed on exchange warrants daily, with deliveries totalling approximately 17,000 tonnes to date. Investment positioning indicates strong bullish sentiment.
Market participants expecting further price increases have accumulated long positions exceeding 110,000 tonnes, representing the largest combined bullish bet since the London Metal Exchange began publishing market participant position data in 2018. Options market data shows significant speculative interest, with open interest in December zinc call options at a $4,000 per tonne strike price approaching 1,500 lots, and an additional 757 lots in contracts with a $4,500 per tonne strike. Supply constraints in zinc concentrate remain a key supporting factor for elevated prices.
Global zinc mine output declined for three consecutive years before rising 4.8% in 2025. However, growth has decelerated sharply in 2026, with an increase of only 1.1% recorded during January-May. Competition for concentrate supplies has intensified considerably, with spot treatment charges for imported raw materials in China falling to a record negative $117.50 per tonne.
Despite these challenging economics, Chinese smelters continue to expand operations. Market observers anticipate that record-low concentrate treatment charges may eventually force production cutbacks among even the largest Chinese smelters, further constraining global supply. The trajectory of Chinese zinc production will prove decisive in determining the global market balance and will directly affect the position of traders maintaining short positions on the London Metal Exchange.
Source: mezha.net