$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 (2016-02-01), losing -8.53%. The number of shares
that changed hands was 3,116,907, or about 1 times the average daily volume
in the stock.
The closing price was $3.11, amounting to a market cap of $910,960,000,
about -60.13% off the highest price in the last 12 months. The stock has
been trading at a range between $2.43 and $7.8.
PDS is in the Oil & Gas Production industry, part of the Energy sector.