Century Aluminum Stock Tumbles as Glencore Reduces Shareholding

Century Aluminum Co. shares fell the most in seven months after its biggest shareholder Glencore Plc reduced its stake in the US-based producer of the light-weight metal.

Glencore sold 9 million shares in the Chicago-based aluminum refiner in a block trade that raised $276 million in gross proceeds, according to people familiar with the matter.