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

Pengrowth Energy Corporation (symbol: PGH) was one of the worst losers of
the trading day today (2016-03-21), losing -13.27%. The number of shares
that changed hands was 1,702,325, or about 2 times the average daily volume
in the stock.
The closing price was $0.98, amounting to a market cap of $532,170,000,
about -72.24% off the highest price in the last 12 months. The stock has
been trading at a range between $0.45 and $3.53.
PGH is in the Oil & Gas Production industry, part of the Energy sector.