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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.

Date Short Interest
April 30, 20157.75
April 15, 20154.93
March 31, 20153.87
March 13, 20153.93
February 27, 20153.82
February 13, 20153.9
January 30, 20154.07
January 15, 20154.07
December 31, 20144.59
December 15, 20146.03
November 28, 20146.29
November 14, 20147.28
October 31, 20147.22
October 15, 20147.83
September 30, 20147.63
September 15, 20147.49
August 29, 20147.87
August 15, 20147.68
July 31, 20147.7
July 15, 20146.84
June 30, 201412.69
June 13, 201410.25
May 30, 201412.91
May 15, 201415.47
April 30, 201414.13
April 15, 201414.07
March 31, 201411.39
March 14, 201410.87
February 28, 20149.39
February 14, 201410.34
January 31, 20149.58
January 15, 20149.26
December 31, 20139.48
December 13, 201310.83
November 29, 201310.38
November 15, 201310.16
October 31, 201311.48
October 15, 201311.2
September 30, 201311.13
September 13, 201311.38
August 30, 201311.34
August 15, 201311.1
July 31, 201310.23
July 15, 201310.9
June 28, 201310.29
June 14, 201310.14
May 31, 20139.45
May 15, 201310.7
April 30, 201310.95
April 15, 201311.32
March 28, 201311.23
March 15, 201311.49
February 28, 201310.58
February 15, 201310.9
January 31, 201310.93
January 15, 201311.34
December 31, 201212.27
December 14, 201212.34
November 30, 201212.46
November 15, 201212.87
October 31, 201213.09
October 15, 201213.53
September 28, 201213.68
September 14, 201214.73
August 31, 201214.63
August 15, 201215.47
July 31, 201216.41
July 13, 201219.51
June 29, 201223.04
June 15, 201227.15
May 31, 201230.75
May 15, 201231.74
April 30, 201232.8
April 13, 201234.16
March 30, 201234.69
March 15, 201235.11
February 29, 201234.14
February 15, 201233.01
January 31, 201232.12
January 13, 201231.53
December 30, 201131.53
December 15, 201131.91
November 30, 201132.62
November 15, 201131.88
October 31, 201130.66
October 14, 201129.37
September 30, 201124.13
September 15, 201122.6
August 31, 201123.76
August 15, 201119.39
July 29, 201120.3
July 15, 201120.77
June 30, 201120.5
June 15, 201122.31
May 31, 201122.24
May 13, 201122.2
April 29, 201139.84
April 15, 201140.28
March 31, 201128.48
March 15, 201134.02
February 28, 201135.41
February 15, 201136.96
January 31, 201136.31
January 14, 201135.94
December 31, 201035.15
December 15, 201034.98
November 30, 201035.99
November 15, 201037.39
October 29, 201037.64
October 15, 201037.65
September 30, 201036.09
September 15, 201035.65
August 31, 201034.98
August 13, 201034.59
July 30, 201035.91
July 15, 201038.13
June 30, 201038.8
June 15, 201041.1
May 28, 201042.74
May 14, 201043.1
April 30, 201042.66
April 15, 201030.49
March 31, 201028.78
March 15, 201025.2
February 26, 201023.26
February 12, 201022.79
January 29, 201023.01
January 15, 201023.38
December 31, 200924.21
December 15, 200925.08
November 30, 200924.72
November 13, 200924.69
October 30, 200925.53
October 15, 200925.02
September 30, 200923.67
September 15, 200923.52
August 31, 200922.32
August 14, 200920.71
July 31, 200920.44
July 15, 200921.25
June 30, 200921.56
June 15, 200920.3
May 29, 200920.09
May 15, 200919.68
April 30, 200923.46
April 15, 200924.92
March 31, 200925.97
March 13, 200929.98
February 27, 200926.76
February 13, 200926.2
January 30, 200924.88
January 15, 200921.46
December 31, 200821.89
December 15, 200823.06
November 28, 200822.01
November 14, 200823.24
October 31, 200825.12
October 15, 200829.95
September 30, 200830.11
September 15, 200833.34
August 29, 200835.61
August 15, 200834.11
July 31, 200836.29
July 15, 200837.95
June 30, 200833.57
June 13, 200828.15
May 30, 200829.31
May 15, 200824.25
April 30, 200821.83
April 15, 200822.31
March 31, 200821.29
March 14, 200822.15
February 29, 200821.5
February 15, 200820.81
January 31, 200818.2
January 15, 200816.15
December 31, 200716.41
December 11, 200715.95
November 27, 200715.41
November 9, 200715.62
October 26, 200715.31
October 10, 200714.29
September 25, 200714.2
September 11, 200714.78
August 10, 200715.53
July 10, 200716.23
June 12, 200717.96
May 10, 200718.05
April 10, 200716.68
March 12, 200717.9
February 12, 200715.15
January 9, 200714.08
December 12, 200613.29
November 10, 200611.76
October 10, 200612.1
September 12, 200612.38
August 10, 200611.34
July 11, 200611.18
June 12, 200612.58
May 10, 200611.68
April 10, 200612.54
March 10, 200611.44
February 10, 200611.38
January 10, 200610.64
December 12, 200511.01
November 10, 20059.59
October 11, 20059.33
September 12, 20059.32
August 10, 20058.26
July 12, 20057.38
June 10, 20056.66
May 10, 20057.2
April 12, 20057.32
March 10, 20057.59
February 10, 200511.1
January 11, 200510.18
December 10, 20049.88
November 10, 20049.51
October 12, 20049.94
September 10, 200410.56
August 10, 20049.94
July 12, 20049.41
June 9, 20048.62
May 11, 20048.1
April 12, 20048.42
March 10, 20048.63
February 10, 20049.14
January 12, 200410.35
December 10, 200310.7
November 11, 200312.59
October 10, 200314.6
September 10, 200318.21
August 12, 20039.77
July 10, 200310.06
June 10, 20038.91
May 12, 20038.59
April 10, 20038.37
March 11, 20038.33
February 11, 20037.96
January 10, 20036.66
December 10, 20026.34
November 12, 20026.47
October 10, 20027.45
September 10, 20028.47
August 12, 20028.73
July 10, 20029.26
June 11, 20029.4
May 10, 20029.36
April 10, 20028.84
March 12, 20028.55
February 12, 20028.31
January 10, 20026.57
December 11, 20016.24
November 12, 20016.25
October 10, 20015.94
September 5, 20015.9
August 10, 20016.18
July 10, 20017.26
June 12, 20018.04
May 10, 20018.21
April 9, 20018.81
March 12, 20018.86
February 12, 20016.14
January 9, 20015.06
December 12, 20005.67
November 10, 20005.01
October 10, 20004
September 12, 20005.03
August 10, 20004.99
July 11, 20004.23
June 12, 20003.95
May 10, 20003.29
April 11, 20001.83
March 10, 20000.68
February 10, 20001.24
January 11, 20001.02
December 10, 19991.27
November 10, 19991.37
October 12, 19991.22
September 10, 19991.19
August 10, 19991.38
July 12, 19991.68
June 10, 19991.53
May 11, 19991.44
April 12, 19991.53
March 10, 19991.5
February 9, 19991.44
January 8, 19991.35
December 8, 19981.24
November 6, 19981.18
October 8, 19981.25
September 8, 19981.15
August 7, 19981.18
July 8, 19981.06
June 8, 19980.92
May 8, 19980.87
April 7, 19981.68
March 6, 19980.89
February 6, 19980.79
January 8, 19980.66
December 8, 19970.56
November 7, 19970.52
October 8, 19970.54
September 8, 19970.54
August 8, 19970.55
July 8, 19970.44
June 6, 19970.6
May 8, 19970.58
April 8, 19970.58
March 7, 19970.52
February 7, 19970.52
January 8, 19970.64
December 6, 19960.38
November 8, 19960.39
October 8, 19960.6
September 6, 19960.57
August 8, 19960.57
July 8, 19960.76
June 7, 19960.91
May 8, 19960.77
April 8, 19960.62
March 8, 19960.63
February 8, 19960.6
January 8, 19961.95
December 8, 19951.89
November 8, 19952.18
October 6, 19951.85
September 8, 19951.88
August 8, 19951.93
July 7, 19951.99
June 8, 19952
May 8, 19952.14
April 6, 19952.23
March 8, 19952.19
February 8, 19952.15
January 6, 19952.35

Institutional Ownership History (%)

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

Date Institutional Ownership
April 30, 20159
March 31, 20154
January 31, 201519
December 31, 201416
November 30, 201415
October 31, 201415
September 30, 201416
August 31, 201417
July 31, 201417
June 30, 201426
May 31, 201424
April 30, 201428
March 31, 201420
February 28, 201421
January 31, 201422
December 31, 201321
November 30, 201328
October 31, 201323
September 30, 201322
August 31, 201321
July 31, 201322
June 30, 201324
May 31, 201322
April 30, 201323
March 31, 20136
February 28, 201325
January 31, 201327
December 31, 201228
November 30, 201225
October 31, 201224
September 30, 201223
August 31, 201224
July 31, 201224
June 30, 201229
May 31, 201229
April 30, 201229
March 31, 201231
February 29, 201234
January 31, 201234
December 31, 201134
November 30, 201134
October 31, 201134
September 30, 201141
August 31, 201143
July 31, 201154
June 30, 201164
May 31, 201167
April 30, 201179
March 31, 201181
February 28, 201181
January 31, 201183
December 31, 201083
November 30, 201084
October 31, 201088
March 31, 2010100
February 28, 201098
January 31, 201093
December 31, 200990
November 30, 200989
October 31, 200992
September 30, 200975
August 31, 200975
July 31, 200978
June 30, 200979
May 31, 200979
April 30, 200979
March 31, 200979
February 28, 200978
January 31, 200988
December 31, 200885
November 30, 200884
October 31, 200886
September 30, 200889
August 31, 200889
July 31, 200889
June 30, 200897
May 31, 200897
April 30, 200897
March 31, 200871
February 29, 200871
January 31, 200871

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.

Date Insider Ownership
April 30, 201522
March 31, 201523
February 28, 20152
January 31, 20152
December 31, 20143
November 30, 20143
October 31, 20143
September 30, 20143
August 31, 20143
July 31, 20142
June 30, 20143
May 31, 20143
March 31, 20145
February 28, 20144
January 31, 20144
December 31, 20134
November 30, 20134
October 31, 20134
September 30, 20134
August 31, 20134
July 31, 20134
June 30, 20134
May 31, 20134
April 30, 20134
March 31, 20134
January 31, 20134
November 30, 20125
October 31, 20125
September 30, 20123
August 31, 20123
July 31, 20123
June 30, 20123
May 31, 20123
April 30, 20123
March 31, 20122
February 29, 20122
January 31, 20122
December 31, 20112
November 30, 20112
October 31, 20112
September 30, 20112
August 31, 20112
July 31, 20112
June 30, 20112
May 31, 20112
April 30, 20112
March 31, 20112
February 28, 20112
January 31, 20112
December 31, 20103
November 30, 20103
October 31, 20103
September 30, 20103
August 31, 20103
July 31, 20103
June 30, 20103
May 31, 20103
April 30, 20102
March 31, 20102
February 28, 20102
January 31, 20102
December 31, 20092
November 30, 20092
October 31, 20092
September 30, 20092
August 31, 20092
July 31, 20092
June 30, 20092
May 31, 20093
April 30, 20092
March 31, 20092
February 28, 20092
January 31, 20092
December 31, 20082
November 30, 20082
October 31, 20083
September 30, 20083
August 31, 20083
July 31, 20083
June 30, 20082
May 31, 20082
April 30, 200810
March 31, 20089
February 29, 20089
January 31, 20089
December 31, 20079
November 30, 20079
October 31, 20079
September 30, 20079
August 31, 20079
July 31, 20079
June 30, 20079
May 31, 200711
April 30, 200710
March 31, 200710
February 28, 200710
January 31, 200710
December 31, 20068
November 30, 20068
October 31, 20068
September 30, 20068
June 30, 20068
May 31, 20062
April 30, 20062
March 31, 20062
February 28, 20062
January 31, 20061
December 31, 20052
November 30, 20052
October 31, 20052
September 30, 20052
August 31, 20052
July 31, 20052
June 30, 20051
May 31, 20052
April 30, 20052
March 31, 20052
February 28, 20052
January 31, 20052
December 31, 20042
November 30, 20042
October 31, 20042
September 30, 20042
August 31, 20042
July 31, 20042
June 30, 20042
May 31, 20042
April 30, 20043
March 31, 20042
February 29, 20042

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Kevin G. Douglas10% Owner834,5338.72%2015-04-24
Dr. Gregory J. Yurek,PhDChairman and CEO176,0121.84%2011-06-01
Mr. Peter O. CrispN/A118,6031.24%2011-12-13
Alexis P. MalozemoffEVP & Chief Technical Officer82,5000.86%2009-05-15
Andrew G.C. Sage,IIN/A76,0000.79%2007-03-13
Mr. Charles W. StankiewiczEVP & GM, AMSC Power Systems65,3310.68%2011-08-23
David ParatorePresident and COO62,5760.65%2005-06-23
Mr. John R. CollettSVP, Chief Strategy Officer54,1000.57%2010-05-12
Mr. David A. HenryEVP, CFO & Treasurer48,5090.51%2015-05-08
Mr. Timothy D. PoorSVP, Global Sales & Bus. Dev.44,7050.47%2012-12-31

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value
Vanguard Group, Inc.227,3092015-03-312.370.001,463,870
Vanguard Total Stock Mkt Idx105,7862015-03-311.110.00681,262
Vanguard Extended Market Index Fund71,9382015-03-310.750.00463,281
Ironwood Investment Management LLC   Premium Plus55,1282015-03-310.580.07355,000
Vanguard Instl Total Stock Market Index34,4592015-03-310.360.00221,916
Fidelity Management & Research Company34,3182015-03-310.360.00221,008
Russell Investment Management Co28,3972015-03-310.300.01182,877
Russell US Small Cap Equity Fund22,2272015-03-310.230.01143,142
Fidelity Spartan® Extended Mkt Indx Fd19,7702015-03-310.210.00127,319
Condor Capital Management   Premium Plus18,9912015-03-310.200.03122,000

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