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What's old is new: Tyson Foods & Pitney Bowes

Tuesday, 20 Aug 2013 | 2:30 PM ET

Two of the best performing stocks in the S&P 500 over the past month are Tyson Foods and Pitney Bowes. Tom Graves, Standard and Poor's; and George Tong, Piper Jaffray, analyze both stocks' turnaround.