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

C&J Energy Services, Ltd. Commo (symbol: CJES) was one of the worst losers
of the trading day today (2015-08-18), losing -10.06%. The number of shares
that changed hands was 3,851,718, or about 2 times the average daily volume
in the stock.
The closing price was $5.63, amounting to a market cap of $658,730,000,
about -82.15% off the highest price in the last 12 months. The stock has
been trading at a range between $5.55 and $31.54.
CJES is in the Oilfield Services/Equipment industry, part of the Energy
sector. It first went public in 2015.