$GRPN is one of biggest losers #stocks today. read more:

Groupon, Inc. (symbol: GRPN) was one of the worst losers of the trading day
today (2016-04-29), losing -18.28%. The number of shares that changed hands
was 45,005,944, or about 3 times the average daily volume in the stock.
The closing price was $3.62, amounting to a market cap of $2,120,000,000,
about -49.65% off the highest price in the last 12 months. The stock has
been trading at a range between $2.15 and $7.19.
GRPN is in the Advertising industry, part of the Technology sector. It
first went public in 2011.
Looking at its valuation, the stock is now trading at 113.12 times earnings.