$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 (2016-10-18), losing -5.88%. The number of shares
that changed hands was 75,544,657, or about 7 times the average daily
volume in the stock.
The closing price was $10.57, amounting to a market cap of $1,910,000,000,
about -22.96% off the highest price in the last 12 months. The stock has
been trading at a range between $3.4 and $13.72.
OAS is in the Oil & Gas Production industry, part of the Energy sector. It
first went public in 2010.