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Volcano Corp (VOLC) Ownership Data

Short Interest History (%)

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

Date Short Interest
January 30, 201511.16
January 15, 20159.45
December 31, 20148.49
December 15, 201410.71
November 28, 201410.62
November 14, 201411.02
October 31, 201411.77
October 15, 201413.19
September 30, 201413.42
September 15, 201412.91
August 29, 201413.09
August 15, 201413.96
July 31, 201416.43
July 15, 201416.51
June 30, 201416.93
June 13, 201417.66
May 30, 201417.68
May 15, 201417.56
April 30, 201418.89
April 15, 201417.37
March 31, 201416.85
March 14, 201416.75
February 28, 201416.29
February 14, 201414.4
January 31, 201414.89
January 15, 201416.17
December 31, 201318.08
December 13, 201320.84
November 29, 201315.71
November 15, 201314.72
October 31, 201312.25
October 15, 201312.33
September 30, 201312.59
September 13, 201314.15
August 30, 201315.33
August 15, 201314.43
July 31, 201314.19
July 15, 201313.84
June 28, 201313.33
June 14, 201312.87
May 31, 201311.13
May 15, 20139.89
April 30, 201310.51
April 15, 201310.64
March 28, 201310.53
March 15, 201310.24
February 28, 201310.28
February 15, 201311.37
January 31, 201310.63
January 15, 201311.09
December 31, 201211.34
December 14, 201212.71
November 30, 201210.37
November 15, 201210.11
October 31, 20128.94
October 15, 20128.74
September 28, 20129.52
September 14, 20129.55
August 31, 20129.09
August 15, 20129.13
July 31, 20128.78
July 13, 20128.92
June 29, 20129.41
June 15, 20129.37
May 31, 20129.15
May 15, 20128.92
April 30, 20128.72
April 13, 20129.64
March 30, 20128.9
March 15, 20129.75
February 29, 20129.37
February 15, 20128.73
January 31, 20128.91
January 13, 20127.75
December 30, 20118.11
December 15, 20117.64
November 30, 20118
November 15, 20117.14
October 31, 20117.74
October 14, 201110.62
September 30, 201110.36
September 15, 20119.27
August 31, 20119.24
August 15, 20118.03
July 29, 20118.25
July 15, 20118.17
June 30, 20118.41
June 15, 20118.56
May 31, 20118.55
May 13, 20117.15
April 29, 20117.21
April 15, 20116.75
March 31, 20117.41
March 15, 20118.04
February 28, 20118.91
February 15, 20119.34
January 31, 201110.16
January 14, 201110.01
December 31, 201010.55
December 15, 201011.29
November 30, 201011.59
November 15, 201012.31
October 29, 201012.44
October 15, 201012.68
September 30, 201012.33
September 15, 201010.57
August 31, 20109.55
August 13, 20108.3
July 30, 20108
July 15, 20108.96
June 30, 20108.85
June 15, 20109.79
May 28, 20109.93
May 14, 20109.31
April 30, 20109.38
April 15, 20109.99
March 31, 201010.65
March 15, 201012.53
February 26, 201011.1
February 12, 201011.45
January 29, 201011.71
January 15, 201011.47
December 31, 200912.38
December 15, 200912.55
November 30, 200911.35
November 13, 200910.58
October 30, 200910.35
October 15, 200910.4
September 30, 200910.88
September 15, 200911.12
August 31, 200910.89
August 14, 200910.53
July 31, 200911.29
July 15, 200910.99
June 30, 200910.06
June 15, 20099.37
May 29, 20098.37
May 15, 20096.92
April 30, 20096.62
April 15, 20096.61
March 31, 20096.17
March 13, 20095.95
February 27, 20093.78
February 13, 20092.75
January 30, 20093.24
January 15, 20093.62
December 31, 20084.51
December 15, 20085.45
November 28, 20085.55
November 14, 20085.43
October 31, 20087.02
October 15, 20086.15
September 30, 20087.13
September 15, 20086.81
August 29, 20087.05
August 15, 20087.54
July 31, 20088.74
July 15, 200810.27
June 30, 20087.03
June 13, 20087.53
May 30, 20087.1
May 15, 20086.32
April 30, 20086.44
April 15, 20086.81
March 31, 20087.13
March 14, 20086.54
February 29, 20085.88
February 15, 20085.97
January 31, 20084.81
January 15, 20085.33
December 31, 20074.19
December 11, 20074.1
November 27, 20074.26
November 9, 20074.16
October 26, 20074.01
October 10, 20074.14
September 25, 20074.2
September 11, 20074.35
August 10, 20076.45
July 10, 20076.34
June 12, 20074.14
May 10, 20073.76
April 10, 20072.72
March 12, 20072.88
February 12, 20072.37
January 9, 20072.48
December 12, 20061.06
November 10, 20060.92
October 10, 20060.89
September 12, 20060.05
August 10, 20060.01
July 11, 20060.15

Institutional Ownership History (%)

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

Date Institutional Ownership
January 31, 201583
December 31, 201492
November 30, 201490
October 31, 201498
March 31, 201316
September 30, 200999
August 31, 200999
July 31, 200993
June 30, 200994
May 31, 200994
April 30, 200991
March 31, 200991
February 28, 200992
January 31, 200995
December 31, 200893
November 30, 200893
October 31, 200895
September 30, 200894
August 31, 200894
July 31, 200894
June 30, 200890
May 31, 200890
April 30, 200890
March 31, 200880
February 29, 200880
January 31, 200880

Insider ownership (%)

This is the historical insider ownership of Volcano 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
January 31, 20153
December 31, 20143
November 30, 20143
October 31, 20143
September 30, 20143
August 31, 20143
July 31, 20143
June 30, 20143
May 31, 20143
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, 20082
March 31, 20082
February 29, 20082
January 31, 20082
December 31, 20072
November 30, 20072
October 31, 20072
September 30, 20072
August 31, 20072
July 31, 20072
June 30, 20074
May 31, 20074
April 30, 20074
March 31, 20074
February 28, 20074
January 31, 20074
December 31, 20064
November 30, 20064
October 31, 20065
September 30, 20065
June 30, 20065
May 31, 20065

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
S. Ward Casscells,IIIN/A599,1381.16%2006-06-14
R. Scott HuennekensPresident & Chief Executive Of181,2130.35%2014-12-31
Vincent J. BurgessVPof Bus.Development&Marketing130,7210.25%2010-02-27
Jorge J. QuinoyPres. US & APLAC Comm Sales110,2350.21%2014-02-27
James C. Blair,PhDN/A70,9160.14%2008-04-24
John T. DahldorfCFO59,3140.11%2014-12-31
David M. SheehanEVP of Operations, GM of Japan45,746less than 0.1%2014-05-03
Ronald A. MatricariaDirector43,147less than 0.1%2015-01-01
Schoemaker Kathleen KN/A29,887less than 0.1%2008-04-24
Brian H. DoveyN/A28,460less than 0.1%2008-04-24

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value($1000)
Vanguard Group, Inc.   Premium Plus3,215,7442014-12-316.23N/A57,498,000
AZ InvestEd Ivy Science & Tech Fund3,192,3002014-03-316.231.1662,920,233
Water Island Capital LLC.   Premium Plus3,116,2162014-12-316.041.8655,717,942
T. Rowe Price Associates, Inc.   Premium Plus3,016,5102014-09-305.850.0132,096,000
Camber Capital Management LLC   Premium Plus2,550,0002014-12-174.94N/A28,203,000
TimesSquare Capital Management, LLC   Premium Plus2,468,3442014-12-314.780.2544,134,000
Gabelli Funds LLC Premium2,295,5002015-01-124.45N/A41,043,540
Wellington Management Company LLP   Premium Plus1,913,7252014-09-303.710.0120,362,000
Fidelity Management and Research Company   Premium Plus1,500,0002015-02-092.91N/A26,955,000
BlackRock Fund Advisors   Premium Plus1,468,7142014-12-312.850.0126,261,000

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