GROUP ONE TRADING, L.P. - AMERICAN SUPERCONDUCTOR CORP ownership

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AMERICAN SUPERCONDUCTOR CORP's ticker is AMSC and the CUSIP is 030111108. A total of 77 filers reported holding AMERICAN SUPERCONDUCTOR CORP in Q3 2013. The put-call ratio across all filers is 1.51 and the average weighting 0.0%.

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Quarter-by-quarter ownership
GROUP ONE TRADING, L.P. ownership history of AMERICAN SUPERCONDUCTOR CORP
ValueSharesWeighting
Q2 2013$71,000–26,908–0.00%–
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Other shareholders

There were no reported owners of AMERICAN SUPERCONDUCTOR CORP in Q3 2013.

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View complete list of AMERICAN SUPERCONDUCTOR CORP shareholders