Alcoa (NYSE:AA) reported quarterly earnings of $0.39 per share which missed the analyst consensus estimate of $0.47 by 16.13 percent. This is a 143.75 percent increase over earnings of $0.16 per share from the same period last year. The company reported quarterly sales of $3.018 billion which beat the analyst consensus estimate of $2.909 billion by 3.73 percent. This is a 3.85 percent increase over sales of $2.906 billion the same period last year.