Groupon's fourth quarter earnings report so greatly disappointed Wall Street expectations that the stock tumbled nearly 30 percent after hours before pulling back slightly. Ahead of the earnings report the stock was down 72 percent over the past 12 months. So what sparked such a steep tumble?
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Revenue came in right in line with expectations, but the company reported a loss of one penny excluding various one-time items. That compares to estimates of a gain of three cents.