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XenoPort Inc (XNPT)Ownership Data

Short Interest History (%)

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

Date Short Interest
March 31, 20159.27
March 13, 20158.44
February 27, 20157
February 13, 20156.66
January 30, 20156.18
January 15, 20156.19
December 31, 20146.08
December 15, 20146.99
November 28, 20147.84
November 14, 20148.27
October 31, 20148.68
October 15, 201410.64
September 30, 201410.98
September 15, 201410.38
August 29, 201410.3
August 15, 201410.24
July 31, 20149.99
July 15, 20149.91
June 30, 20149.3
June 13, 20149.01
May 30, 20148.64
May 15, 20148.39
April 30, 20147.88
April 15, 20148.26
March 31, 20147.81
March 14, 20146.6
February 28, 20146.89
February 14, 20147.25
January 31, 201410.7
January 15, 20149.72
December 31, 201310.09
December 13, 201311.15
November 29, 201312.05
November 15, 201312.94
October 31, 201313.93
October 15, 201313.51
September 30, 201312.01
September 13, 201310.94
August 30, 20139.88
August 15, 20138.43
July 31, 20137.7
July 15, 20138.19
June 28, 20138.29
June 14, 20138.01
May 31, 20138.78
May 15, 20138.2
April 30, 20137.6
April 15, 20135.99
March 28, 20135.77
March 15, 20135.43
February 28, 20135.11
February 15, 20135.15
January 31, 20138.9
January 15, 20138.52
December 31, 20128.47
December 14, 20129.75
November 30, 20129.54
November 15, 20128.71
October 31, 20128.01
October 15, 20128.81
September 28, 20128.35
September 14, 201210.34
August 31, 20129.12
August 15, 20129.96
July 31, 201211.24
July 13, 201214.86
June 29, 201215.25
June 15, 201215.56
May 31, 201213.17
May 15, 201211.36
April 30, 201210.86
April 13, 201210.7
March 30, 201211.19
March 15, 201211.29
February 29, 201211.01
February 15, 201211.19
January 31, 20128.41
January 13, 20128.74
December 30, 20118.28
December 15, 20118.99
November 30, 20119.72
November 15, 20119.55
October 31, 20119.46
October 14, 201110.98
September 30, 201111.77
September 15, 201111.73
August 31, 201111.44
August 15, 201111.46
July 29, 201111.77
July 15, 201110.73
June 30, 201111.1
June 15, 201111.53
May 31, 201111.34
May 13, 201110.47
April 29, 201110.16
April 15, 201111.54
March 31, 20117.57
March 15, 20118.58
February 28, 20118.83
February 15, 20118.24
January 31, 20119.77
January 14, 20119.01
December 31, 201010.35
December 15, 201010.78
November 30, 201011.99
November 15, 201012.39
October 29, 201013.85
October 15, 201015.1
September 30, 201015.48
September 15, 201015.78
August 31, 201016.34
August 13, 201016.74
July 30, 201018.08
July 15, 201018.29
June 30, 201017.86
June 15, 201020.07
May 28, 201019.4
May 14, 201018.14
April 30, 201016.72
April 15, 201015.81
March 31, 201015.91
March 15, 201020.27
February 26, 201021.08
February 12, 201017.09
January 29, 201013.48
January 15, 201012.56
December 31, 200910.36
December 15, 20099.9
November 30, 20099.43
November 13, 200910.23
October 30, 20098.47
October 15, 20097.72
September 30, 20097.17
September 15, 20098.43
August 31, 20097.72
August 14, 20097.91
July 31, 20097.74
July 15, 20097.69
June 30, 20098.81
June 15, 20099.2
May 29, 20099.41
May 15, 20099
April 30, 20098.14
April 15, 20097.57
March 31, 20098.64
March 13, 20099.88
February 27, 200912.42
February 13, 200911.2
January 30, 200911.06
January 15, 200912.2
December 31, 200813.42
December 15, 200814.26
November 28, 200810.59
November 14, 200811.13
October 31, 200811.58
October 15, 20089.43
September 30, 200810.33
September 15, 200812.77
August 29, 200812.75
August 15, 200812.67
July 31, 200812.99
July 15, 200812.83
June 30, 200812.85
June 13, 200812.5
May 30, 200811.83
May 15, 200811.87
April 30, 200811.61
April 15, 200812.4
March 31, 200812.7
March 14, 200812.49
February 29, 200811.36
February 15, 20087.75
January 31, 20087.06
January 15, 20086.67
December 31, 20075.88
December 11, 20077.13
November 27, 20077.3
November 9, 20077.09
October 26, 20076.55
October 10, 20076.91
September 25, 20077.01
September 11, 20077.27
August 10, 20078.39
July 10, 20077.77
June 12, 20078.2
May 10, 200710.92
April 10, 20077.65
March 12, 20076.35
February 12, 20074.75
January 9, 20074.31
December 12, 20064.06
November 10, 20064.09
October 10, 20064.44
September 12, 20064.22
August 10, 20064.28
July 11, 20065.82
June 12, 20062.95
May 10, 20063.77
April 10, 20062.99
March 10, 20063.44
February 10, 20063.08
January 10, 20062.78
December 12, 20052.67
November 10, 20052.35
October 11, 20051.19
September 12, 20050.8
August 10, 20050.91
July 12, 20059.81
June 10, 200510.75

Institutional Ownership History (%)

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

Date Institutional Ownership
March 31, 201586
February 28, 201585
January 31, 201586
December 31, 201490
November 30, 201488
October 31, 201488
September 30, 201489
August 31, 201485
July 31, 201486
June 30, 201486
May 31, 201486
April 30, 201486
March 31, 201466
February 28, 201466
January 31, 201466
December 31, 201366
November 30, 201378
October 31, 201378
September 30, 201384
August 31, 201383
July 31, 201383
June 30, 201381
May 31, 201379
April 30, 201379
March 31, 201311
February 28, 201389
January 31, 201390
December 31, 201293
November 30, 201293
October 31, 201291
September 30, 201268
August 31, 201270
July 31, 201270
June 30, 201281
May 31, 201285
April 30, 201285
March 31, 201290
February 29, 201294
September 30, 201196
December 31, 201099
November 30, 2010100
October 31, 201098
January 31, 201091
December 31, 200993
November 30, 200993
October 31, 200987
September 30, 200989
August 31, 200989
July 31, 200983
June 30, 200991
May 31, 200991
April 30, 200995
March 31, 200999
February 28, 200999
January 31, 200994
November 30, 200897
October 31, 200897
September 30, 200894
August 31, 200894
July 31, 200894
June 30, 200893
May 31, 200893
April 30, 200893
March 31, 200895
February 29, 200895
January 31, 200895

Insider ownership (%)

This is the historical insider ownership of XenoPort Inc. 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
March 31, 20152
February 28, 20152
January 31, 20152
December 31, 20142
November 30, 20142
October 31, 20142
September 30, 20142
August 31, 20142
July 31, 20142
June 30, 20142
May 31, 20142
March 31, 20143
February 28, 20143
January 31, 20143
December 31, 20133
November 30, 20133
October 31, 20133
September 30, 20133
August 31, 20133
July 31, 20133
June 30, 20133
May 31, 20133
April 30, 20132
March 31, 20132
January 31, 20132
November 30, 20122
October 31, 20122
September 30, 20122
August 31, 20122
July 31, 20122
June 30, 20122
May 31, 20122
April 30, 20122
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, 20102
November 30, 20102
October 31, 20102
September 30, 20102
August 31, 20102
July 31, 20102
June 30, 20102
May 31, 20102
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, 20092
April 30, 20092
March 31, 20092
February 28, 20092
January 31, 20092
December 31, 20082
November 30, 20082
October 31, 20082
September 30, 20082
August 31, 20082
July 31, 20082
June 30, 20082
May 31, 20082
April 30, 20083
March 31, 20083
February 29, 20083
January 31, 20083
December 31, 20073
November 30, 20073
October 31, 20073
September 30, 20073
August 31, 20074
July 31, 20074
June 30, 20074
May 31, 20074
April 30, 20074
March 31, 20075
February 28, 20075
January 31, 20075
December 31, 20065
November 30, 20065
October 31, 20065
September 30, 20065
June 30, 20065
May 31, 20065
April 30, 20067
March 31, 20067
February 28, 20067
January 31, 20066
December 31, 20057
November 30, 20057
October 31, 20057
September 30, 20057
August 31, 20057
July 31, 20057
June 30, 20057
May 31, 20057

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Dr. Ronald W. Barrett,PhDCEO, Director229,2030.37%2015-01-13
William J. Dower,PhDVP, Discovery Biology201,6290.32%2006-03-15
William G. HarrisSVP, Finance and CFO147,1110.23%2015-01-13
Vincent J. AngottiN/A104,8480.17%2015-01-13
Ms. Gianna M. BoskoSVP, CLO and Secretary92,8370.15%2015-01-13
Dr. Ernest Mario,PhDDirector83,7500.13%2014-05-23
Dr. Pierre V. Tran,M.D.N/A83,3310.13%2005-06-01
Dr. David R. Savello,PhDN/A78,5060.13%2014-01-13
Dr. Paul Goddard,PhDN/A50,831less than 0.1%2005-06-07
Dr. Kenneth C. Cundy,PhDSVP, Preclinical Development43,851less than 0.1%2012-03-12

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value
Wellington Management Company LLP8,587,9272014-12-3113.750.0275,316,000
Baker Bros Advisors LLC6,903,6282014-12-3111.050.6260,545,000
Orbimed Advisors, LLC5,546,1002014-12-318.880.4648,639,000
VA CollegeAmerica Small Cap World4,769,0002014-12-317.630.1841,824,130
Capital World Investors4,769,0002014-12-317.630.0141,824,000
J P Morgan Asset Management (UK) Ltd2,397,4122014-12-313.840.0521,025,000
BlackRock Fund Advisors2,354,0812014-12-313.770.0120,645,000
SPDR® S&P Pharmaceuticals ETF2,087,9712015-04-103.551.2715,868,580
Vanguard Group, Inc.1,784,8202014-12-312.860.0015,653,000
State Street Corp1,758,9942014-12-312.820.0015,425,000

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