Why Has Groupon Lost 80% of Its Value Since IPO?

Nov. 8 (Bloomberg) -- Cory Johnson reports on Groupon's revenue issues and its loss in value. He speaks on Bloomberg Television's "Bloomberg West." (Source: Bloomberg)
Carter: U.S. Has to Be on Cutting Edge of Cyber Defense
53:38 - U.S. Defense Secretary Ashton Carter talks about his trip to the Silicon Valley, the relationship between technology community and the Pentagon, and the importance of cybersecurity. Speaking with Emily Chang on Bloomberg Television's "Bloomberg Markets," Carter also discusses the defense budget. (Source: Bloomberg)
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