U.S. launches formal WTO complaint over Chinese aluminum subsidies

• Century Aluminum (CENX +13.6%) jumps as much as 15.5% after the U.S. launched a formal trade complaint at the WTO against Chinese aluminum subsidies, confirming earlier reports.
• The complaint argues that "artificially cheap" state-directed loans and coal, electricity and alumina for the Chinese aluminum sector undercuts global prices and artificially expands China's market share.
• Alcoa (AA +3.3%) is higher, while Chinalco (ACH -2.2%) and Kaiser Aluminum (KALU -6.9%) are lower.