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

Encana Corporation (symbol: ECA) was one of the worst losers of the trading
day today (2016-05-03), losing -11.84%. The number of shares that changed
hands was 19,935,755, or about 1 times the average daily volume in the
stock.
The closing price was $6.55, amounting to a market cap of $5,570,000,000,
about -55.53% off the highest price in the last 12 months. The stock has
been trading at a range between $3.0 and $14.73.
ECA is in the Oil & Gas Production industry, part of the Energy sector.