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)
Investment Opportunities in Africa
34:10 - Former Barclays CEO Bob Diamond discusses his outlook for investing in Africa and speaks about the banking business model. He speaks at the Milken Institute Global Conference 2015 on “Market Makers.” (Source: Bloomberg)
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