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American Superconductor Corp (AMSC) Ownership Data

Short Interest History (%)

This is the historical short interest of American Superconductor Corp, as measured by the Short Percentage Of Float.

Institutional Ownership History (%)

This the Institutional Ownership History of American Superconductor Corp Peter Lynch prefers to buy companies with low institutional ownership.

Insider ownership (%)

This is the historical insider ownership of American Superconductor Corp. It is usually better to buy companies with large insider ownership. The company insiders' interest are more aligned with external shareholders in this case.

Top Direct Holders

HolderShares% of Shares
Report Date
Kevin G. Douglas5,705,3316.59%2013-02-11
Mr. Daniel P. McGahn454,4140.53%2014-06-05
James F Maguire422,3320.49%2014-08-27
Mr. David A. Henry243,4330.28%2014-06-24
Dr. Gregory J. Yurek,PhD176,0120.2%2011-06-01
Mr. Peter O. Crisp118,6030.14%2011-12-13
Alexis P. Malozemoff82,5000.1%2009-05-15
Andrew G.C. Sage,II76,000less than 0.1%2007-03-13
Mr. Charles W. Stankiewicz65,331less than 0.1%2011-08-23
David Paratore62,576less than 0.1%2005-06-23

Top Fund Holders

HolderSharesReport Date% of Shares
% of Total
Assets Managed
Market Value
Vanguard Group, Inc.1,986,3452014-09-302.390.002,801,000
BlackRock Fund Advisors1,614,8592014-09-301.940.002,277,000
Vanguard Total Stock Mkt Idx1,043,5622014-11-301.210.001,027,909
Prescott Group Capital Management L.L.C.979,0552014-09-301.180.271,380,000
Invesco PowerShares Capital Mgmt LLC628,3402014-09-300.760.00886,000
Ironwood Investment Management LLC614,3532014-09-300.740.16866,000
PowerShares WilderHill Clean Energy Port591,7212014-12-250.570.35485,211
Vanguard Extended Market Index Fund589,2072014-11-300.680.00580,369
Footprints Asset Mgmt & Rsrch, Inc.554,4272014-09-300.6711.81781,742
Footprints Discover Value Fund554,4272014-09-300.6711.81781,742

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