Groupon (GRPN -27.03%) published its latest set of quarterly figures after market hours Wednesday, and investors reacted rather negatively to the news. Combined with a new development about financing, the company's latest communications didn't make them happy. They expressed their displeasure by trading down the stock by 27% the following trading session. This was on a day when the S&P 500 index essentially traded sideways.Revenue declined, but the bottom line flipped in the third quarterIn its third quarte ...