
Ed Ketz, Penn State University, discusses the accounting practices at Groupon; the firing of the company's CFO; and its charity deals, with CNBC's Darren Rovell. Also, a look at why Groupon's stock is underperforming, with Herman Leung, SusQuehanna. (CNBC)
Tags:. .groupon. .underperforming. .cfo. .rovell. .leung










