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

Whiting Petroleum Corporation (symbol: WLL) was one of the biggest winners
of the trading day today (2016-07-12), gaining 12.53%. The number of shares
that changed hands was 33,054,120, or about 1.3 times the average daily
volume in the stock.
The closing price was $8.8, amounting to a market cap of $1,800,000,000,
about -71.58% off the highest price in the last 12 months. The stock has
been trading at a range between $3.35 and $30.96.
WLL is in the Oil & Gas Production industry, part of the Energy sector. It
first went public in 2003.