Afternoon Losers; American Superconductor Down Nearly 10%
American Superconductor Corporation (NASDAQ: AMSC) -9.73% after Wunderlich downgraded the company to Hold.
A123 Systems, Inc. (NASDAQ: AONE) -7.41% in spite of being initiated with Overweight at Piper Jaffray.
3D Systems Corporation (NYSE: DDD) -6.86% - hearing Needham cut the company's estimates today.
Manitowoc Co. Inc. (NYSE: MTW) -6.40% on heavy volume.
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