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Westport Innovations Inc (WPRT)Ownership Data

Short Interest History (%)

This is the historical short interest of Westport Innovations Inc, as measured by the Short Percentage Of Float.

Date Short Interest
March 13, 201513.26
February 27, 201513.92
February 13, 201514.57
January 30, 201514.02
January 15, 201515.4
December 31, 201415.05
December 15, 201415.53
November 28, 201416.09
November 14, 201415.6
October 31, 201415.78
October 15, 201416.07
September 30, 201416.77
September 15, 201417.05
August 29, 201417.56
August 15, 201416.65
July 31, 201417.51
July 15, 201418.74
June 30, 201418.84
June 13, 201418.65
May 30, 201418.23
May 15, 201418.41
April 30, 201418.8
April 15, 201419.99
March 31, 201419.83
March 14, 201420.35
February 28, 201419.57
February 14, 201422.37
January 31, 201422.02
January 15, 201421.1
December 31, 201320.73
December 13, 201320.13
November 29, 201320.02
November 15, 201320.78
October 31, 201320.83
October 15, 201321.8
September 30, 201319.99
September 13, 201319.56
August 30, 201319.82
August 15, 201319.77
July 31, 201319.08
July 15, 201318.33
June 28, 201318.14
June 14, 201319.21
May 31, 201319.88
May 15, 201322.22
April 30, 201323.39
April 15, 201324.3
March 28, 201324.48
March 15, 201323.44
February 28, 201322.96
February 15, 201322.24
January 31, 201321.87
January 15, 201321.95
December 31, 201222.41
December 14, 201224.14
November 30, 201225.56
November 15, 201226.3
October 31, 201227.38
October 15, 201227.75
September 28, 201227.73
September 14, 201227.54
August 31, 201226.95
August 15, 201227.19
July 31, 201227.9
July 13, 201227.89
June 29, 201228.98
June 15, 201231.47
May 31, 201230.63
May 15, 201231.28
April 30, 201229.28
April 13, 201225.97
March 30, 201218.17
March 15, 201215.26
February 29, 201212.58
February 15, 201214.01
January 31, 201211.47
January 13, 201210.89
December 30, 201111.09
December 15, 201110.59
November 30, 201110.49
November 15, 201110.36
October 31, 20118.15
October 14, 20117.84
September 30, 20117.3
September 15, 20117.36
August 31, 20116.82
August 15, 20116.67
July 29, 20115.5
July 15, 20116.24
June 30, 20117.35
June 15, 20117.2
May 31, 20115.78
May 13, 20114.83
April 29, 20115.81
April 15, 20116.62
March 31, 20117.31
March 15, 20117.36
February 28, 20116.51
February 15, 20115.04
January 31, 20114.17
January 14, 20113.63
December 31, 20103.72
December 15, 20104.44
November 30, 20104.5
November 15, 20104.72
October 29, 20103.95
October 15, 20104.83
September 30, 20105.08
September 15, 20104.99
August 31, 20104.93
August 13, 20105.89
July 30, 20105.11
July 15, 20103.85
June 30, 20103.5
June 15, 20103.84
May 28, 20103.76
May 14, 20103.48
April 30, 20102.9
April 15, 20103.4
March 31, 20102.58
March 15, 20102.58
February 26, 20102.41
February 12, 20101.95
January 29, 20101.59
January 15, 20100.85
December 31, 20090.74
December 15, 20090.91
November 30, 20090.99
November 13, 20091.03
October 30, 20091.11
October 15, 20091.11
September 30, 20091.22
September 15, 20091.03
August 31, 20090.69
August 14, 20090.41
July 31, 20090.33
July 15, 20090.59
June 30, 20090.55
June 15, 20090.37
May 29, 20091.85
May 15, 20091.45
April 30, 20091.05
April 15, 20090.78
March 31, 20090.28
March 13, 20090.23
February 27, 20090.23
February 13, 20090.25
January 30, 20090.23
January 15, 20090.27
December 31, 20080.26
December 15, 20080.27
November 28, 20080.39
November 14, 20080.31
October 31, 20080.15
October 15, 20080.89
September 30, 20081.68
September 15, 20082.02
August 29, 20081.06

Institutional Ownership History (%)

This the Institutional Ownership History of Westport Innovations IncPeter Lynch prefers to buy companies with low institutional ownership.

Date Institutional Ownership
February 28, 201519
January 31, 201518
December 31, 201425
November 30, 201424
October 31, 201424
September 30, 201426
August 31, 201427
July 31, 201426
June 30, 201431
May 31, 201432
April 30, 201432
March 31, 201441
February 28, 201441
January 31, 201440
December 31, 201341
November 30, 201343
October 31, 201343
September 30, 201347
August 31, 201348
July 31, 201342
June 30, 201342
May 31, 201341
April 30, 201343
March 31, 201316
February 28, 201344
January 31, 201344
December 31, 201243
November 30, 201245
October 31, 201245
September 30, 201252
August 31, 201252
July 31, 201252
June 30, 201248
May 31, 201247
April 30, 201247
March 31, 201257
February 29, 201258
January 31, 201265
December 31, 201154
November 30, 201154
October 31, 201154
September 30, 201153
August 31, 201154
July 31, 201160
June 30, 201162
May 31, 201160
April 30, 201172
March 31, 201171
February 28, 201172
January 31, 201156
December 31, 201054
November 30, 201054
October 31, 201054
September 30, 201054
August 31, 201056
July 31, 201054
June 30, 201056
May 31, 201056
April 30, 201059
March 31, 201056
February 28, 201060
January 31, 201059
December 31, 200956
November 30, 200957
September 30, 200932
August 31, 200931
July 31, 200928
June 30, 200923
May 31, 200922
April 30, 200920
March 31, 200921
February 28, 200921
January 31, 200924
December 31, 200823
November 30, 200823
October 31, 200810
June 30, 20083
May 31, 20083
April 30, 20083

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Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Kevin G. Douglas3,514,0205.54%2013-02-06

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value
Susquehanna Financial Group, LLLP1,050,6872014-12-311.630.003,930,000
Renaissance Technologies Corp816,1002014-12-311.270.013,054,000
Ecofin Limited758,2212014-12-311.180.512,836,000
BOLTON LLC684,7002014-12-311.060.792,561,000
O’Leary Global Bond Yield Advantaged Fd682,5062015-02-281.0814.033,771,506
Stanton Asset Management Inc682,5062015-02-281.0814.033,771,506
Government Pension Fund of Norway - Global644,8022013-12-311.030.0012,616,875
NORGES BANK613,0312014-12-310.960.002,316,000
Deutsche Bank AG468,7342014-12-310.730.001,753,000
Baillie Gifford & Co Limited.423,2292014-12-310.670.001,604,000

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