United Co. Rusal, the largest aluminum producer, said new rules on warehousing threaten to worsen a supply shortfall, helping drive up the premiums buyers pay for swift delivery to 50 percent of the market price.
The London Metal Exchange, the world’s biggest metals bourse, strengthened its powers to investigate wait times for metals at its network of licensed warehouses that customers complained drove up their costs.
Mitsui Mining & Smelting Co., Japan’s biggest zinc producer, raised annual charges to overseas buyers by as much as 70 percent as consumption increases in China. Futures in London snapped a 10-day losing streak.
Red Kite Group, whose metals fund returned more than 50 percent last year, said copper’s outlook has turned positive as refiners are swamped by supplies of mined ore amid prospects for global economies to strengthen.