Westlake Chemical (NYSE:WLKP) reported quarterly earnings of $0.40 per share which missed the analyst consensus estimate of $0.42 by 4.76 percent. This is a 2.44 percent decrease over earnings of $0.41 per share from the same period last year. The company reported quarterly sales of $297.100 million which missed the analyst consensus estimate of $537.000 million by 44.67 percent. This is a 0.01 percent decrease over sales of $297.119 million the same period last year.