Caterpillar (NYSE:CAT) reported quarterly earnings of $8.17 per share which beat the analyst consensus estimate of $5.71 by 43.08 percent. This is a 73.09 percent increase over earnings of $4.72 per share from the same period last year. The company reported quarterly sales of $20.500 billion which beat the analyst consensus estimate of $18.358 billion by 11.67 percent. This is a 22.84 percent increase over sales of $16.689 billion the same period last year.