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

Oasis Petroleum Inc. Common Sto (symbol: OAS) was one of the worst losers
of the trading day today (2015-12-28), losing -11.43%. The number of shares
that changed hands was 7,340,138, or about 1 times the average daily volume
in the stock.
The closing price was $7.05, amounting to a market cap of $980,770,000,
about -64.09% off the highest price in the last 12 months. The stock has
been trading at a range between $6.34 and $19.63.
OAS is in the Oil & Gas Production industry, part of the Energy sector. It
first went public in 2010.
Looking at its valuation, the stock is now trading at 6.46 times earnings.