Key Points American Superconductor beat on earnings but missed on sales last night. GAAP profits declined in Q2 and could be cut in half again in Q3. 10 stocks we like better than American Superconductor › American Superconductor (NASDAQ: AMSC) stock got devastated this morning, falling 31.5% through 10:55 a.m. ET after reporting mixed earnings last night. Heading into the report, analysts forecast the green energy stock (American Superconductor builds control systems for wind turbines, and optimiz ...