Futures mixed as central bankers gather i

Futures mixed as central bankers gather in Wyoming
Associated Press

This photo combo shows Fed Vice Chair Janet Yellen, left, and former Treasury Secretary Lawrence Summers. Fed Chairman Ben Bernanke is expected to step down when his second term ends in January 2014, and the contest to succeed him has turned into a public struggle between Yellen and Summers. (AP Photo/Eugene Hoshiko, J. Scott Applewhite)

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