The company competes with other international Aluminum giants like Rusal, Rio Tinto, BHP Billiton and Chalco.

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Jiangxi Copper was down 3.9%, Chalco fell 2.1% and Zijin Mining Group dropped 2.5%.

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Recently, for example, opposition candidates say it took advantage of a flood in Chalco, a huge shantytown near Mexico city, to mix the party message with government aid.

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Alcoa, which competes with mining giants like Rusal, Rio Tinto, BHP Billiton and Chalco, is upbeat about the global outlook for aluminum and expects the strong demand to continue in the next decade.

FORBES: Alcoa Shines on Solid Aluminum Demand