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

Whiting Petroleum Corporation C (symbol: WLL) was one of the worst losers
of the trading day today (2015-11-27), losing -7.16%. The number of shares
that changed hands was 4,912,638, or about 0 times the average daily volume
in the stock.
The closing price was $15.94, amounting to a market cap of $3,250,000,000,
about -66.69% off the highest price in the last 12 months. The stock has
been trading at a range between $13.5 and $47.86.
WLL is in the Oil & Gas Production industry, part of the Energy sector. It
first went public in 2003.