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

Patterson-UTI Energy, Inc. (symbol: PTEN) was one of the biggest winners of
the trading day today (2016-09-29), gaining 6.77%. The number of shares
that changed hands was 5,589,326, or about 1.6 times the average daily
volume in the stock.
The closing price was $21.77, amounting to a market cap of $3,180,000,000,
about -1.58% off the highest price in the last 12 months. The stock has
been trading at a range between $10.94 and $22.12.
PTEN is in the Oil & Gas Production industry, part of the Energy sector. It
first went public in 1993.