UPDATE: RBC Downgrades Groupon, Says Risk Outweighs Reward

In a report published Friday, RBC Capital Markets analyst Mark Mahaney downgraded Groupon (NASDAQ: GRPN ) from Sector Perform to Underperform and lowered the price target from $11.00 to $7.00 following mixed fourth quarter results. On Thursday, Groupon reported fourth quarter and fiscal year 2013 results. Revenue for the fourth