$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 (2016-10-21), losing -8.38%. The number of shares
that changed hands was 37,872,707, or about 3 times the average daily
volume in the stock.
The closing price was $11.59, amounting to a market cap of $4,490,000,000,
about -25.66% off the highest price in the last 12 months. The stock has
been trading at a range between $5.0 and $15.59.
SWN is in the Oil & Gas Production industry, part of the Energy sector.