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

Cobalt International Energy, In (symbol: CIE) was one of the worst losers
of the trading day today (2016-05-30), losing -13.75%. The number of shares
that changed hands was 9,355,500, or about 2 times the average daily volume
in the stock.
The closing price was $2.07, amounting to a market cap of $848,140,000,
about -80.96% off the highest price in the last 12 months. The stock has
been trading at a range between $1.98 and $10.87.
CIE is in the Oil & Gas Production industry, part of the Energy sector. It
first went public in 2009.