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Optimer Pharmaceuticals, Inc. (OPTR)Ownership Data

Short Interest History (%)

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

Date Short Interest
October 15, 201311.07
September 30, 201312.25
September 13, 201311.73
August 30, 201312.66
August 15, 201313.41
July 31, 201316.02
July 15, 201316.82
June 28, 201319.08
June 14, 201319.4
May 31, 201319.02
May 15, 201318.61
April 30, 201317.09
April 15, 201318.07
March 28, 201317.8
March 15, 201317.53
February 28, 201320.51
February 15, 201320.33
January 31, 201319.88
January 15, 201319.76
December 31, 201218.77
December 14, 201216.92
November 30, 201217.08
November 15, 201218.51
October 31, 201218.17
October 15, 201218.14
September 28, 201219.23
September 14, 201220.17
August 31, 201220.71
August 15, 201220.36
July 31, 201221
July 13, 201221.21
June 29, 201221.8
June 15, 201223.98
May 31, 201224.64
May 15, 201224.08
April 30, 201223.24
April 13, 201221.13
March 30, 201218.33
March 15, 201220.48
February 29, 201218.25
February 15, 201218.48
January 31, 201218.9
January 13, 201218.25
December 30, 201118.01
December 15, 201118.73
November 30, 201122.44
November 15, 201122.37
October 31, 201114.94
October 14, 201114.66
September 30, 201113.92
September 15, 201117.42
August 31, 201115.45
August 15, 201115.17
July 29, 201114.16
July 15, 201112.97
June 30, 201111.71
June 15, 201111.07
May 31, 20119.92
May 13, 20118.79
April 29, 20117.88
April 15, 20118.32
March 31, 20117.82
March 15, 20117.03
February 28, 20116.58
February 15, 20116.57
January 31, 20116.41
January 14, 20116.15
December 31, 20106.07
December 15, 20106.21
November 30, 20106.73
November 15, 20107.31
October 29, 20107.54
October 15, 20107.58
September 30, 20108.18
September 15, 20108.03
August 31, 20108.09
August 13, 20107.63
July 30, 20108.25
July 15, 20108.08
June 30, 20108.11
June 15, 20108.35
May 28, 20108.55
May 14, 20108.77
April 30, 20108.14
April 15, 20108.02
March 31, 20107.74
March 15, 20107.96
February 26, 201010.11
February 12, 201010.02
January 29, 20109.32
January 15, 20108.32
December 31, 20097.88
December 15, 20098.48
November 30, 20098.85
November 13, 20099.04
October 30, 20098.29
October 15, 20098.53
September 30, 20098.91
September 15, 20099.12
August 31, 20099.2
August 14, 20099.08
July 31, 20098.62
July 15, 20099.73
June 30, 20099.19
June 15, 20099.01
May 29, 20098.22
May 15, 20097.52
April 30, 20098.41
April 15, 20097.59
March 31, 20098.36
March 13, 20097.7
February 27, 20096.34
February 13, 20095.98
January 30, 20096.35
January 15, 20096.93
December 31, 20086.79
December 15, 20087.3
November 28, 20086.47
November 14, 20084.26
October 31, 20083.27
October 15, 20083.76
September 30, 20084.94
September 15, 20085.13
August 29, 20084.58
August 15, 20085.03
July 31, 20086
July 15, 20086.84
June 30, 20080.56
June 13, 20080.5
May 30, 20080.43
May 15, 20080.46
April 30, 20080.59
April 15, 20080.58
March 31, 20081.32
March 14, 20081.12
February 29, 20081.01
February 15, 20080.99
January 31, 20080.99
January 15, 20080.97
December 31, 20071.02
December 11, 20070.95
November 27, 20071
November 9, 20070.87
October 26, 20070.86
October 10, 20070.8
September 25, 20070.13
September 11, 20070.11
August 10, 20070.05
July 10, 20070.03
June 12, 20070.01
May 10, 20070.01
April 10, 20070.02
March 12, 20070.01
February 12, 20070.06

Institutional Ownership History (%)

This the Institutional Ownership History of Optimer Pharmaceuticals, Inc.Peter Lynch prefers to buy companies with low institutional ownership.

Insider ownership (%)

This is the historical insider ownership of Optimer Pharmaceuticals, 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
August 31, 20134
July 31, 20133
June 30, 20133
May 31, 20133
April 30, 20133
March 31, 20133
January 31, 20133
November 30, 20123
October 31, 20123
September 30, 20123
August 31, 20123
July 31, 20123
June 30, 20123
May 31, 20123
April 30, 20123
March 31, 20123
February 29, 20123
January 31, 20123
December 31, 20113
November 30, 20113
October 31, 20113
September 30, 20113
August 31, 20113
July 31, 20113
June 30, 20112
May 31, 20112
April 30, 20112
March 31, 20112
February 28, 20113
January 31, 20113
December 31, 20102
November 30, 20102
October 31, 20102
September 30, 20102
August 31, 20102
July 31, 20102
June 30, 20103
May 31, 20103
April 30, 20102
March 31, 20102
February 28, 20103
January 31, 20103
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, 20088
March 31, 20088
February 29, 20089
January 31, 20089
December 31, 20079
November 30, 20079
October 31, 20079
September 30, 200710
August 31, 200710
July 31, 200710
June 30, 200710
May 31, 200710
April 30, 200710
March 31, 200710
February 28, 200710

No ownership data available.

Top Fund Holders

No ownership data available.

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