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

Enerplus Corporation (symbol: ERF) was one of the biggest winners of the
trading day today (2016-10-05), gaining 7.98%. The number of shares that
changed hands was 2,905,779, or about 2.8 times the average daily volume in
the stock.
The closing price was $7.44, amounting to a market cap of $1,790,000,000,
about -4.86% off the highest price in the last 12 months. The stock has
been trading at a range between $1.84 and $7.82.
ERF is in the Oil & Gas Production industry, part of the Energy sector.