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

Precision Drilling Corporation (symbol: PDS) was one of the worst losers of
the trading day today (2016-11-25), losing -5.28%. The number of shares
that changed hands was 1,702,052, or about 1 times the average daily volume
in the stock.
The closing price was $4.84, amounting to a market cap of $1,420,000,000,
about -20.39% off the highest price in the last 12 months. The stock has
been trading at a range between $2.43 and $6.08.
PDS is in the Oil & Gas Production industry, part of the Energy sector.