Westlake Chemical (NYSE: WLKP) reported quarterly earnings of $0.42 per share which missed the analyst consensus estimate of $0.43 by 2.33 percent. This is a 17.65 percent decrease over earnings of $0.51 per share from the same period last year. The company reported quarterly sales of $308.898 million which beat the analyst consensus estimate of $303.000 million by 1.95 percent. This is a 11.52 percent increase over sales of $276.995 million the same period last year.