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

Southwest Airlines Company Comm (symbol: LUV) was one of the worst losers
of the trading day today (2016-07-21), losing -11.21%. The number of shares
that changed hands was 34,009,953, or about 5 times the average daily
volume in the stock.
The closing price was $37.32, amounting to a market cap of $23,840,000,000,
about -27.31% off the highest price in the last 12 months. The stock has
been trading at a range between $32.94 and $51.34.
LUV is in the Air Freight/Delivery Services industry, part of the
Transportation sector.
Looking at its valuation, the stock is now trading at 10.99 times earnings.