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

Groupon, Inc. (symbol: GRPN) was one of the biggest winners of the trading
day today (2016-07-18), gaining 10.32%. The number of shares that changed
hands was 15,983,121, or about 2.1 times the average daily volume in the
stock.
The closing price was $3.85, amounting to a market cap of $2,230,000,000,
about -27.08% off the highest price in the last 12 months. The stock has
been trading at a range between $2.15 and $5.28.
GRPN is in the Advertising industry, part of the Technology sector. It
first went public in 2011.