The London Metal Exchange suspended trading in its nickel market after an unprecedented price spike left brokers struggling to pay margin calls against unprofitable short positions, in a massive squeeze that has embroiled the largest nickel producer as well as a major Chinese bank.
Nickel, used in stainless steel and electric-vehicle batteries, surged as much as 250% in two days to trade briefly above $100,000 a ton early Tuesday. The frenzied move -- the largest-ever on the LME -- came as investors and industrial users who had sold the metal scrambled to buy the contracts back after prices initially rallied on concerns about supplies from Russia.
