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

Penn West Petroleum Ltd (symbol: PWE) was one of the biggest winners of the
trading day today (2016-06-13), gaining 36.97%. The number of shares that
changed hands was 18,083,543, or about 11.1 times the average daily volume
in the stock.
The closing price was $1.26, amounting to a market cap of $632,720,000,
about -33.68% off the highest price in the last 12 months. The stock has
been trading at a range between $0.45 and $1.9.
PWE is in the Oil & Gas Production industry, part of the Energy sector.