American Superconductor (NASDAQ:AMSC) reported quarterly earnings of $0.16 per share which missed the analyst consensus estimate of $0.21 by 23.81 percent. This is a 44.83 percent decrease over earnings of $0.29 per share from the same period last year. The company reported quarterly sales of $94.073 million which beat the analyst consensus estimate of $87.800 million by 7.14 percent. This is a 30.01 percent increase over sales of $72.358 million the same period last year.