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Sirona Dental Systems Inc (SIRO) Ownership Data

Short Interest History (%)

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

Date Short Interest
August 14, 20154.62
July 31, 20155.1
July 15, 20155.97
June 30, 20155.67
June 15, 20156.04
May 29, 20155.12
May 15, 20154.77
April 30, 20154.27
April 15, 20154.17
March 31, 20153.64
March 13, 20153.56
February 27, 20153.9
February 13, 20153.89
January 30, 20154.69
January 15, 20154.18
December 31, 20144.79
December 15, 20144.88
November 28, 20145.83
November 14, 20146.62
October 31, 20146.79
October 15, 20146.3
September 30, 20146.94
September 15, 20147.4
August 29, 20147.25
August 15, 20147.66
July 31, 20147.94
July 15, 20148.18
June 30, 20148.32
June 13, 20147.86
May 30, 20147.3
May 15, 20147.29
April 30, 20146.83
April 15, 20146.7
March 31, 20146.66
March 14, 20145.48
February 28, 20144.95
February 14, 20144.26
January 31, 20144.56
January 15, 20142.64
December 31, 20132.9
December 13, 20132.22
November 29, 20131.92
November 15, 20133.22
October 31, 20133.3
October 15, 20133.31
September 30, 20132.66
September 13, 20132.02
August 30, 20132.36
August 15, 20132.39
July 31, 20131.37
July 15, 20131.63
June 28, 20131.81
June 14, 20132.27
May 31, 20131.75
May 15, 20131.07
April 30, 20130.92
April 15, 20131.01
March 28, 20131.06
March 15, 20131.01
February 28, 20130.92
February 15, 20130.89
January 31, 20130.53
January 15, 20131.16
December 31, 20121.1
December 14, 20121.13
November 30, 20121.49
November 15, 20122.38
October 31, 20122.28
October 15, 20121.68
September 28, 20121.81
September 14, 20121.75
August 31, 20121.76
August 15, 20121.28
July 31, 20121
July 13, 20121.28
June 29, 20120.96
June 15, 20121.24
May 31, 20121.27
May 15, 20121.28
April 30, 20121.37
April 13, 20121.41
March 30, 20121.44
March 15, 20121.7
February 29, 20121.41
February 15, 20121.49
January 31, 20121.79
January 13, 20122.06
December 30, 20112.12
December 15, 20113.33
November 30, 20113.02
November 15, 20111.98
October 31, 20111.98
October 14, 20111.98
September 30, 20112.4
September 15, 20112.42
August 31, 20112.07
August 15, 20111.83
July 29, 20112.65
July 15, 20112.75
June 30, 20112.69
June 15, 20114.66
May 31, 20113.7
May 13, 20113.53
April 29, 20114.4
April 15, 20114.18
March 31, 20114.37
March 15, 20114.84
February 28, 20114.58
February 15, 20113.81
January 31, 20114.09
January 14, 20113.86
December 31, 20103.7
December 15, 20104.68
November 30, 20105.25
November 15, 20104.82
October 29, 20104.62
October 15, 20105.69
September 30, 20106.21
September 15, 20106.61
August 31, 20106.17
August 13, 20105.71
July 30, 20106.57
July 15, 20107.26
June 30, 20107.85
June 15, 20104.62
May 28, 20105.84
May 14, 20105.8
April 30, 20104.79
April 15, 20103.75
March 31, 20103.61
March 15, 20104.46
February 26, 20104.72
February 12, 20105.08
January 29, 20103.82
January 15, 20103.11
December 31, 20091.81
December 15, 20093.56
November 30, 20093.5
November 13, 20093.5
October 30, 20092.97
October 15, 20092.91
September 30, 20092.93
September 15, 20092.98
August 31, 20092.89
August 14, 20092.83
July 31, 20093.52
July 15, 20093.52
June 30, 20093.04
June 15, 20093.18
May 29, 20093.42
May 15, 20093.37
April 30, 20093.71
April 15, 20094.01
March 31, 20094.25
March 13, 20094.78
February 27, 20094.98
February 13, 20095.15
January 30, 20095.01
January 15, 20094.91
December 31, 20085.16
December 15, 20085.6
November 28, 20085.59
November 14, 20085.18
October 31, 20085.29
October 15, 20085.83
September 30, 20087.72
September 15, 20088.38
August 29, 20088.48
August 15, 20088.3
July 31, 20088.33
July 15, 20088.59
June 30, 20089.06
June 13, 20089.37
May 30, 20089.39
May 15, 20088.39
April 30, 20087.29
April 15, 20087.92
March 31, 20087.38
March 14, 20086.32
February 29, 20085.65
February 15, 20085.72
January 31, 20085.33
January 15, 20084.79
December 31, 20074.3
December 11, 20074.27
November 27, 20074.44
November 9, 20074.72
October 26, 20074.77
October 10, 20075.07
September 25, 20074.5
September 11, 20074.42
August 10, 20075.96
July 10, 20075.93
June 12, 20075.32
May 10, 20073.63
April 10, 20072.88
March 12, 20073.29
February 12, 20072.21
January 9, 20072.04
December 12, 20062.26
November 10, 20062.14
October 10, 20062.48
September 12, 20062.79
August 10, 20061.69
July 11, 20062.04
June 12, 20061.8
May 10, 20060.81
April 10, 20061.29
March 10, 20060.6
February 10, 20060.49
January 10, 20060.16

Institutional Ownership History (%)

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

Date Institutional Ownership
March 31, 201398
September 30, 201298
June 30, 201297
June 30, 2011100
March 31, 201183
December 31, 201077
September 30, 201075
June 30, 201076
March 31, 201072
December 31, 200963
September 30, 200948
June 30, 200932
March 31, 200936
December 31, 200835
September 30, 200837
June 30, 200839
March 31, 200837
December 31, 200734
September 30, 200734
June 30, 200735
March 31, 200735
December 31, 200627
September 30, 200617
June 30, 20068

Insider ownership (%)

This is the historical insider ownership of Sirona Dental Systems 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
July 31, 20155
June 30, 20155
May 31, 20155
April 30, 20154
March 31, 20154
February 28, 20154
January 31, 20154
December 31, 20144
November 30, 20145
October 31, 20144
September 30, 20144
August 31, 20144
July 31, 20144
June 30, 20144
May 31, 20144
March 31, 20144
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, 20124
October 31, 20124
September 30, 20124
August 31, 20124
July 31, 20124
June 30, 20124
May 31, 20124
April 30, 20124
March 31, 20124
February 29, 20124
January 31, 20124
December 31, 20114
November 30, 20114
October 31, 20114
September 30, 20114
August 31, 20114
July 31, 20114
June 30, 20114
May 31, 20114
April 30, 20114
March 31, 20114
February 28, 20114
January 31, 20114
December 31, 20104
November 30, 20104
October 31, 20104
September 30, 20104
August 31, 20104
July 31, 20104
June 30, 20104
May 31, 20104
April 30, 20104
March 31, 20104
February 28, 20104
January 31, 20104
December 31, 20094
November 30, 20095
October 31, 20095
September 30, 20095
August 31, 20095
July 31, 20095
June 30, 20095
May 31, 20095
April 30, 20095
March 31, 20095
February 28, 20095
January 31, 20095
December 31, 20085
November 30, 20085
October 31, 20085
September 30, 20085
August 31, 20085
July 31, 20085
June 30, 20085
May 31, 20085
April 30, 20082
March 31, 20082
February 29, 20082
January 31, 20082
December 31, 20072
November 30, 20071
October 31, 20071
September 30, 20071
August 31, 20071
July 31, 20071
June 30, 20071
May 31, 20071
April 30, 20071
March 31, 20071
February 28, 20071
January 31, 20071
December 31, 20061
November 30, 20062
October 31, 20062
September 30, 20061
June 30, 20069
April 30, 200630
March 31, 200640
February 28, 200616
January 31, 200617
December 31, 200517
November 30, 200517
October 31, 200517
September 30, 200517
August 31, 200517
July 31, 200516
June 30, 200516
May 31, 200516
April 30, 200530
March 31, 200530
February 28, 200530
January 31, 200530
December 31, 200432
November 30, 200432
October 31, 200432
September 30, 200428
August 31, 200428
July 31, 200428
June 30, 200422
May 31, 200422
April 30, 200432
March 31, 200432
February 29, 200432

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Jeffrey T. SlovinCEO386,0410.69%2015-05-15
Jost FischerChairman and CEO112,2490.2%2012-12-08
Jonathan I. FriedmanGeneral Counsel and Secretary69,8360.13%2015-06-11
Simone BlankExec Vice President and CFO68,5000.12%2012-12-08
Mr. Walter PetersohnExecutive Vice Pres of Sales34,970less than 0.1%2015-01-01
Ulrich MichelN/A34,917less than 0.1%2015-07-29
William K. HoodDirector30,448less than 0.1%2015-05-12
Mr. Rainer BerthanExecutive VP23,296less than 0.1%2015-07-02
Mr. Michael AuginsN/A23,000less than 0.1%2015-03-01
Mr. David K. BeeckenDirector22,115less than 0.1%2015-05-12

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value($1000)
T. Rowe Price Associates, Inc.   Premium Plus5,805,1522015-06-3010.450.12582,953
Generation Investment Management LLP   Premium Plus3,998,0272015-06-307.205.38401,482
Vanguard Group, Inc.   Premium Plus3,791,1942015-06-306.820.03380,712
Neuberger Berman LLC   Premium Plus3,547,0632015-06-306.380.40356,196
Blair William & Co   Premium Plus3,227,9382015-06-305.810.48324,149
Ruane, Cunniff & Goldfarb Inc Premium2,841,5202015-06-305.111.36285,345
Cantillon Capital Management LLC   Premium Plus2,403,9902015-06-304.334.82241,409
BlackRock Fund Advisors   Premium Plus1,939,8922015-06-303.490.05194,804
Veritas Asset Management LLP   Premium Plus1,876,5312015-06-303.382.66188,441
Neuberger Berman Genesis Fund1,701,7262015-06-303.061.44170,887

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