Shares of Southwest Airlines Co (NYSE:LUV) are 0.4% lower at 30.31,astheairlinegiantpreparestoreportthird−quarterresultsbeforetheopenonThursday,Oct.24.AccordingtoZacks,analystsexpectthecompanytopostearningsof5centspershare−−an86.86.8 billion. A look at the last two years shows LUV tends to underperform the day after earnings. In fact, the equity finished lower in six of its last eight post-earnings sessions. Shares averaged a 4.2 ...