The deal is estimated to be worth $14.05 billion, and represents the largest overseas investment by a Chinese company, Chinalco said. Alcoa Inc. (NYSE: AA) said it would contribute $1.2 billion to the investment.
Alcoa's shares closed Friday up $1.19 to $34.15 on the news, as did Rio Tinto plc (ADR) (NYSE: RTP), which closed up $34.05 to $441.00.
Alcoa and Chinalco's stake could very well obstruct a bid from Anglo-Australian mining giant BHP Billiton for Rio Tinto, the Associated Press reported. BHP Billiton Limited (ADR) (NYSE: BHP) closed up $6.15 to $73.73.



