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ZIOPHARM Oncology Inc (ZIOP) Ownership Data

Short Interest History (%)

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

Date Short Interest
July 15, 201532.5
June 30, 201530.82
June 15, 201530.62
May 29, 201527.89
May 15, 201525.77
April 30, 201522.68
April 15, 201527.36
March 31, 201524.72
March 13, 201526.06
February 27, 201525.26
February 13, 201522.84
January 30, 201521.34
January 15, 201520.65
December 31, 201421.63
December 15, 201421.68
November 28, 201423.03
November 14, 201422.34
October 31, 201423.63
October 15, 201421.94
September 30, 201422.53
September 15, 201423.18
August 29, 201423.06
August 15, 201423.34
July 31, 201423.3
July 15, 201422.81
June 30, 201422.84
June 13, 201423.47
May 30, 201423.31
May 15, 201422.97
April 30, 201422.99
April 15, 201430.84
March 31, 201428.1
March 14, 201427.84
February 28, 201427.63
February 14, 201427.39
January 31, 201427.37
January 15, 201427.76
December 31, 201328.07
December 13, 201326.14
November 29, 201324.9
November 15, 201323.74
October 31, 201323.49
October 15, 201327.85
September 30, 201326.58
September 13, 201326.62
August 30, 201326.78
August 15, 201325.92
July 31, 201325.94
July 15, 201324.91
June 28, 201324.95
June 14, 201325.44
May 31, 201324.98
May 15, 201323.59
April 30, 201323.74
April 15, 201323.6
March 28, 201326.7
March 15, 201323.32
February 28, 201320.98
February 15, 201318.56
January 31, 201317.59
January 15, 201317.44
December 31, 201217.34
December 14, 201217.45
November 30, 201217.49
November 15, 201217.31
October 31, 201217.53
October 15, 201217.51
September 28, 201217.4
September 14, 201217.19
August 31, 201215.98
August 15, 201215.23
July 31, 201214.83
July 13, 201214.7
June 29, 201214.68
June 15, 201215.21
May 31, 201215.08
May 15, 201214.43
April 30, 201213.81
April 13, 201218.68
March 30, 201217.91
March 15, 201218.36
February 29, 201217.65
February 15, 201217.13
January 31, 201218.27
January 13, 201216.03
December 30, 201116.3
December 15, 201116.2
November 30, 201117.12
November 15, 201116.85
October 31, 201115.77
October 14, 201115.44
September 30, 201114.89
September 15, 201115.66
August 31, 201115.48
August 15, 201113.99
July 29, 201112.9
July 15, 201112.81
June 30, 201113.55
June 15, 201113.03
May 31, 201111.75
May 13, 201110.3
April 29, 201110.73
April 15, 201114.87
March 31, 201114.51
March 15, 201114.29
February 28, 201111.06
February 15, 201110.34
January 31, 201111.18
January 14, 201110.99
December 31, 201010.6
December 15, 201011.35
November 30, 201011.34
November 15, 201011.58
October 29, 201011.25
October 15, 201010.42
September 30, 201010.29
September 15, 20109.99
August 31, 201010.31
August 13, 20109.35
July 30, 201010.67
July 15, 201011.25
June 30, 201010.97
June 15, 20103.7
May 28, 20105.48
May 14, 20104.8
April 30, 20103.62
April 15, 20102.5
March 31, 20101.62
March 15, 20101.18
February 26, 20101.15
February 12, 20101.07
January 29, 20101.02
January 15, 20101.01
December 31, 20090.97
December 15, 20091.17
November 30, 20090.92
November 13, 20090.73
October 30, 20090.28
October 15, 20090.21
September 30, 20090.12
September 15, 20090.04
August 31, 20090.06
August 14, 20090.15
July 31, 20090.09
July 15, 20090.11
June 30, 20090.1
June 15, 20090.35
May 29, 20090.24
May 15, 20090.08
April 30, 20090.09
April 15, 20090.09
March 31, 20090.08
March 13, 20090.19
February 27, 20090.36
February 13, 20090.95
January 30, 20090.93
January 15, 20090.94
December 31, 20080.95
December 15, 20080.94
November 28, 20080.93
November 14, 20080.93
October 31, 20080.93
October 15, 20080.22
September 30, 20081.15
September 15, 20080.96
August 29, 20080.94
August 15, 20080.98
July 31, 20080.91
July 15, 20080.87
June 30, 20080.8
June 13, 20080.86
May 30, 20080.14
May 15, 20080.11
April 30, 20080.08
April 15, 20080.06
March 31, 20080.02
March 14, 20080.02
February 29, 20080.01
February 15, 20080.01
January 31, 20080.01
January 15, 20080.02
December 31, 20070.06
December 11, 20070.01
November 27, 20070.01
November 9, 20070.01
October 26, 20070.04
October 10, 20070.04
September 25, 20070.29
September 11, 20070.28
August 10, 20070.29
July 10, 20070.25
June 12, 20070.02
May 10, 20070.03
April 10, 20070.49
March 12, 20070.71
February 12, 20070.73
January 9, 20070.68
December 12, 20060.67
November 10, 20060.57
October 10, 20060.06

Institutional Ownership History (%)

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

Date Institutional Ownership
June 30, 201553
March 31, 201552
December 31, 201443
September 30, 201446
June 30, 201450
March 31, 201455
December 31, 201356
September 30, 201351
June 30, 201364
March 31, 201353
December 31, 201259
September 30, 201259
June 30, 201258
March 31, 201259
December 31, 201157
September 30, 201136
June 30, 201137
March 31, 201137
December 31, 201054
September 30, 201047
June 30, 201049
March 31, 201032
December 31, 200931
September 30, 200912
June 30, 200916
March 31, 200920
December 31, 200818
September 30, 200816
June 30, 200819
March 31, 200821
December 31, 200722
September 30, 200718
June 30, 200723
March 31, 200724
December 31, 200629
September 30, 20067
June 30, 20065
December 31, 200510

Insider ownership (%)

This is the historical insider ownership of ZIOPHARM Oncology 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
April 30, 20153
March 31, 20152
February 28, 20152
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, 20144
February 28, 20144
January 31, 20144
December 31, 20134
November 30, 20133
October 31, 20133
September 30, 20133
August 31, 20133
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, 20113
May 31, 20113
April 30, 20113
March 31, 20113
February 28, 20113
January 31, 20114
December 31, 20104
November 30, 20104
October 31, 20104
September 30, 20104
August 31, 20105
July 31, 20105
June 30, 20105
May 31, 20105
April 30, 20105
March 31, 20105
February 28, 20108
January 31, 20108
December 31, 20099
November 30, 20097
October 31, 20097
September 30, 20097
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, 20084
October 31, 20084
September 30, 20084
August 31, 20084
July 31, 20084
June 30, 20084
May 31, 20084
April 30, 20081
March 31, 20081
February 29, 20081
January 31, 20081
December 31, 20071
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, 20072

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Dr. Jonathan Lewis,M.D.,PhDN/A744,1450.58%2014-12-30
Timothy McinerneyDirector372,1200.29%2014-12-31
James A. CannonDirector301,1240.23%2014-12-30
Mr. Richard E. BagleyN/A211,2390.16%2011-12-30
Dr. Michael Weiser,M.D.,PhDDirector166,9340.13%2014-12-30
Senator Wyche Fowler,JrDirector113,366less than 0.1%2014-12-31
Randal J. KirkDirector, 10% Owner95,648less than 0.1%2015-06-04
Dr. Hagop Youssoufian, M.D.MScN/A92,721less than 0.1%2012-12-31
Gary S. FraginN/A67,500less than 0.1%2010-03-31
Mr. Caesar J. BelbelN/A59,201less than 0.1%2015-06-01

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value($1000)
Third Security, LLC   Premium Plus19,272,4152015-03-3115.035.84207,564
University Of Texas Investment Mgmt Co   Premium Plus11,722,1632015-03-319.1449.23126,248
MSD Partners, L.P.   Premium Plus4,425,0002015-03-313.451.1247,657
State Street Corp   Premium Plus3,158,9032015-03-312.46N/A34,017
Vanguard Group, Inc.   Premium Plus3,140,4772015-03-312.45N/A33,823
LMM LLC   Premium Plus3,000,0002015-03-312.341.1332,310
SPDR® S&P Biotech ETF2,810,3912015-07-172.371.1936,395
BlackRock Fund Advisors   Premium Plus2,552,6482015-03-311.990.0127,492
Orbimed Advisors, LLC   Premium Plus2,537,7002015-03-311.980.2327,331
Legg Mason Opportunity Trust2,500,0002015-03-311.951.1226,925

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