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

C&J Energy Services, Ltd. (symbol: CJES) was one of the biggest winners of
the trading day today (2015-12-22), gaining 13.65%. The number of shares
that changed hands was 1,473,495, or about 0.7 times the average daily
volume in the stock.
The closing price was $4.58, amounting to a market cap of $536,140,000,
about -75.18% off the highest price in the last 12 months. The stock has
been trading at a range between $2.97 and $18.45.
CJES is in the Oilfield Services/Equipment industry, part of the Energy
sector. It first went public in 2015.