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

Southwestern Energy Company Com (symbol: SWN) was one of the worst losers
of the trading day today (2016-02-16), losing -10.41%. The number of shares
that changed hands was 18,443,381, or about 1 times the average daily
volume in the stock.
The closing price was $8.0, amounting to a market cap of $3,060,000,000,
about -72.98% off the highest price in the last 12 months. The stock has
been trading at a range between $5.0 and $29.61.
SWN is in the Oil & Gas Production industry, part of the Energy sector.