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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 (%)Short Interest (Shares in Mil)
October 31, 201729.3935.37
October 13, 201728.4534.24
September 29, 201727.6933.32
September 15, 201728.4734.26
August 31, 201728.7834.63
August 15, 201728.9634.84
July 31, 201729.5935.61
July 14, 201730.2336.38
June 30, 201729.9236.00
June 15, 201729.7635.81
May 31, 201730.5236.72
May 15, 201729.9736.06
April 28, 201729.8835.96
April 13, 201731.0536.62
March 31, 201731.236.80
March 15, 201731.2436.85
February 28, 201732.438.21
February 15, 201733.0839.02
January 31, 201734.2640.41
January 13, 201734.8141.05
December 30, 201634.7540.99
December 15, 201635.6742.07
November 30, 201634.6340.85
November 15, 201634.6640.88
October 31, 201634.640.81
October 14, 201632.4338.25
September 30, 201631.7637.46
September 15, 201631.7337.43
August 31, 201632.9938.91
August 15, 201633.139.04
July 29, 201633.0238.95
July 15, 201632.6238.48
June 30, 201631.4737.12
June 15, 201631.8537.57
May 31, 201631.3837.02
May 13, 201629.9835.36
April 29, 201629.6334.94
April 15, 201633.4135.82
March 31, 201633.435.81
March 15, 201635.6938.27
February 29, 201636.6339.27
February 12, 201636.0338.63
January 29, 201634.5637.05
January 15, 201636.5939.23
December 31, 201535.2737.82
December 15, 201532.4634.80
November 30, 201532.735.06
November 13, 201532.0234.33
October 30, 201532.0334.34
October 15, 201532.3134.64
September 30, 201531.7634.05
September 15, 201533.4135.82
August 31, 201532.3334.66
August 14, 201531.7434.03
July 31, 201532.4434.78
July 15, 201532.534.84
June 30, 201530.8233.04
June 15, 201530.6232.83
May 29, 201527.8929.90
May 15, 201525.7727.63
April 30, 201522.6824.31
April 15, 201527.3622.21
March 31, 201524.7220.07
March 13, 201526.0621.16
February 27, 201525.2620.50
February 13, 201522.8418.54
January 30, 201521.3417.32
January 15, 201520.6516.77
December 31, 201421.6317.56
December 15, 201421.6817.60
November 28, 201423.0318.70
November 14, 201422.3418.14
October 31, 201423.6319.18
October 15, 201421.9417.81
September 30, 201422.5318.29
September 15, 201423.1818.82
August 29, 201423.0618.72
August 15, 201423.3418.95
July 31, 201423.318.91
July 15, 201422.8118.51
June 30, 201422.8418.54
June 13, 201423.4719.05
May 30, 201423.3118.93
May 15, 201422.9718.65
April 30, 201422.9918.66
April 15, 201430.8420.72
March 31, 201428.118.88
March 14, 201427.8418.70
February 28, 201427.6318.56
February 14, 201427.3918.40
January 31, 201427.3718.38
January 15, 201427.7618.64
December 31, 201328.0718.85
December 13, 201326.1417.55
November 29, 201324.916.72
November 15, 201323.7415.94
October 31, 201323.4915.78
October 15, 201327.8518.71
September 30, 201326.5817.85
September 13, 201326.6217.88
August 30, 201326.7817.98
August 15, 201325.9217.41
July 31, 201325.9417.42
July 15, 201324.9116.73
June 28, 201324.9516.75
June 14, 201325.4417.09
May 31, 201324.9816.77
May 15, 201323.5915.84
April 30, 201323.7415.95
April 15, 201323.615.70
March 28, 201326.717.76
March 15, 201323.3215.51
February 28, 201320.9813.95
February 15, 201318.5612.34
January 31, 201317.5911.70
January 15, 201317.4411.60
December 31, 201217.3411.53
December 14, 201217.4511.61
November 30, 201217.4911.63
November 15, 201217.3111.51
October 31, 201217.5311.66
October 15, 201217.5111.65
September 28, 201217.411.57
September 14, 201217.1911.43
August 31, 201215.9810.63
August 15, 201215.2310.13
July 31, 201214.839.86
July 13, 201214.79.78
June 29, 201214.689.77
June 15, 201215.2110.12
May 31, 201215.0810.03
May 15, 201214.439.60
April 30, 201213.819.19
April 13, 201218.689.24
March 30, 201217.918.86
March 15, 201218.369.08
February 29, 201217.658.73
February 15, 201217.138.47
January 31, 201218.279.03
January 13, 201216.037.93
December 30, 201116.38.06
December 15, 201116.28.01
November 30, 201117.128.47
November 15, 201116.858.34
October 31, 201115.777.80
October 14, 201115.447.64
September 30, 201114.897.37
September 15, 201115.667.74
August 31, 201115.487.65
August 15, 201113.996.92
July 29, 201112.96.38
July 15, 201112.816.34
June 30, 201113.556.70
June 15, 201113.036.44
May 31, 201111.755.81
May 13, 201110.35.09
April 29, 201110.735.31
April 15, 201114.875.10
March 31, 201114.514.98
March 15, 201114.294.90
February 28, 201111.063.79
February 15, 201110.343.54
January 31, 201111.183.83
January 14, 201110.993.77
December 31, 201010.63.63
December 15, 201011.353.89
November 30, 201011.343.89
November 15, 201011.583.97
October 29, 201011.253.86
October 15, 201010.423.57
September 30, 201010.293.53
September 15, 20109.993.42
August 31, 201010.313.53
August 13, 20109.353.21
July 30, 201010.673.66
July 15, 201011.253.86
June 30, 201010.973.76
June 15, 20103.71.27
May 28, 20105.481.88
May 14, 20104.81.64
April 30, 20103.621.24

Institutional Ownership History (%)

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

Date Institutional Ownership (%)Institutional Ownership (Shares in Mil)
September 30, 201747.0766.83
June 30, 201746.9266.62
March 31, 201738.7251.26
December 31, 201631.5841.82
September 30, 201639.5552.09
June 30, 201644.4458.54
March 31, 201641.7755.06
December 31, 201545.1159.42
September 30, 201551.1860.65
June 30, 201549.4864.74
March 31, 201552.1666.89
December 31, 201443.2245.15
September 30, 201446.1347.44
June 30, 201450.3250.69
March 31, 201455.1455.47
December 31, 201356.8256.91
September 30, 201351.6843.21
June 30, 201366.4755.60
March 31, 201352.8244.21
December 31, 201259.8349.80
September 30, 201259.2947.20
June 30, 201258.7346.76
March 31, 201259.447.25
December 31, 201157.0640.38
September 30, 201136.6525.10
June 30, 201137.3125.49
March 31, 201137.6124.84
December 31, 201054.3126.31
September 30, 201047.0422.84
June 30, 201049.1424.98
March 31, 201031.4913.66
December 31, 200930.5513.30
September 30, 200912.363.23
June 30, 200915.733.47
March 31, 200920.024.43
December 31, 200818.253.96
September 30, 200816.483.63
June 30, 200820.374.46
March 31, 200821.084.88
December 31, 200721.654.70
September 30, 200718.273.93
June 30, 200722.895.25
March 31, 200724.325.18
December 31, 200629.234.48
September 30, 20066.631.02
June 30, 20065.770.88
December 31, 20059.60.70

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 (%)Insider Ownership (Shares in Mil)
October 31, 20173.124.43
September 30, 20173.124.43
August 31, 20173.094.38
July 31, 20173.094.38
June 30, 20173.074.36
May 31, 20173.314.38
April 30, 20173.414.51
March 31, 20173.414.51
February 28, 20173.424.51
January 31, 20173.424.51
December 31, 20163.124.11
November 30, 20163.124.11
October 31, 20163.124.11
September 30, 20163.124.11
August 31, 20163.124.11
July 31, 20163.114.11
June 30, 20163.114.11
May 31, 20163.124.11
April 30, 20163.194.21
March 31, 20163.194.20
February 29, 20163.214.20
January 31, 20163.214.20
December 31, 20153.194.21
November 30, 20152.93.79
October 31, 20152.93.79
September 30, 20152.93.79
August 31, 20152.953.79
July 31, 20152.953.79
June 30, 20152.953.79
May 31, 20152.953.79
April 30, 20152.973.80
March 31, 20152.442.80
February 28, 20152.442.80
January 31, 20152.742.82
December 31, 20142.62.67
November 30, 20142.652.72
October 31, 20142.652.72
September 30, 20142.72.72
August 31, 20142.652.67
July 31, 20142.632.65
June 30, 20142.632.65
May 31, 20142.632.65
March 31, 20143.882.65
February 28, 20143.882.65
January 31, 20143.92.67
December 31, 20133.92.67
November 30, 20133.482.38
October 31, 20133.482.38
September 30, 20133.482.38
August 31, 20133.482.38
July 31, 20133.482.38
June 30, 20133.482.38
May 31, 20133.432.35
April 30, 20133.432.35
March 31, 20133.432.35
January 31, 20133.442.35
November 30, 20123.442.35
October 31, 20123.442.35
September 30, 20123.442.35
August 31, 20123.442.35
July 31, 20123.442.35
June 30, 20123.442.35
May 31, 20123.442.35
April 30, 20123.422.34
March 31, 20123.392.32
February 29, 20123.392.32
January 31, 20123.322.27
December 31, 20113.322.27
November 30, 20112.942.01
October 31, 20112.942.01
September 30, 20112.942.01
August 31, 20112.942.01
July 31, 20112.932.01
June 30, 20112.951.96
May 31, 20112.951.96
April 30, 201131.99
March 31, 20113.021.99
February 28, 20113.021.99
January 31, 20114.091.99
December 31, 20104.122.00
November 30, 20104.182.03
October 31, 20104.182.03
September 30, 20104.162.03
August 31, 20104.522.21
July 31, 20104.522.21
June 30, 20105.292.21
May 31, 20105.292.21
April 30, 20105.292.21
March 31, 20105.312.21
February 28, 20108.482.17
January 31, 20108.482.17
December 31, 20098.532.18
November 30, 20096.941.77
October 31, 20096.941.77
September 30, 20096.941.77
August 31, 20095.251.14
July 31, 20095.251.14
June 30, 20095.251.14
May 31, 20095.241.14
April 30, 20095.241.14
March 31, 20095.241.14
February 28, 20095.361.14
January 31, 20095.361.14
December 31, 20085.361.14
November 30, 200840.85
October 31, 200840.85
September 30, 200840.85
August 31, 200840.85
July 31, 200840.85
June 30, 200840.85
May 31, 200840.85
April 30, 20081.410.30
March 31, 20081.440.31
February 29, 20081.440.31
January 31, 20081.330.28
December 31, 20071.330.28
November 30, 20070.860.18
October 31, 20070.730.15
September 30, 20070.730.15
August 31, 20070.730.15
July 31, 20070.730.15
June 30, 20070.730.15
May 31, 20070.730.15
April 30, 20070.730.15
March 31, 20070.730.15
February 28, 20071.560.33

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Dr. Laurence James Neil CooperCEO1,209,2910.85%2016-12-30
Dr. Jonathan Lewis,M.D.,PhDN/A744,1450.52%2014-12-30
Dr. Lindsay A. Rosenwald, M.D.N/A476,6780.34%2005-09-13
Timothy McinerneyN/A372,1200.26%2014-12-31
James A. CannonN/A352,5020.25%2016-12-30
Mr. Richard E. BagleyN/A211,2390.15%2011-12-30
Dr. Michael Weiser,M.D.,PhDN/A203,6700.14%2016-12-30
Mr. Caesar J. BelbelN/A190,2170.13%2016-12-30
Senator Wyche Fowler,JrN/A140,8500.1%2016-12-30
Randal J. KirkN/A139,5130.1%2016-12-30

Top Fund Holders

HolderSharesReport Date% of Total
Assets Managed
% of Shares
Outstanding
Market Value($1000)
Third Security, LLC   Premium Plus9,709,6072017-09-303.76%N/A59,617
BlackRock Inc.   Premium Plus8,219,2062017-09-300.00%N/A50,466
VANGUARD GROUP INC   Premium Plus8,187,1462017-09-300.00%N/A50,270
LMM LLC   Premium Plus4,858,3562017-09-301.29%N/A29,830
STATE STREET CORP   Premium Plus4,436,5992017-09-300.00%N/A27,237
MSDC Management, L.P.   Premium Plus3,410,5002017-09-300.61%N/A20,940
NORTHERN TRUST CORP   Premium Plus1,621,7762017-09-300.00%N/A9,957
GEODE CAPITAL MANAGEMENT, LLC   Premium Plus1,138,0782017-09-300.00%N/A6,987
SCHWAB CHARLES INVESTMENT MANAGEMENT INC   Premium Plus618,5892017-09-300.00%N/A3,799
Bank of New York Mellon Corp   Premium Plus618,5082017-09-300.00%N/A3,798
TIAA CREF INVESTMENT MANAGEMENT LLC   Premium Plus345,5602017-09-300.00%N/A2,122
GROUP ONE TRADING, L.P.   Premium Plus328,9352017-09-300.12%N/A2,020
COMMERCE BANK   Premium Plus304,5002017-09-300.03%N/A1,870
TEACHERS ADVISORS INC   Premium Plus243,2422017-09-300.00%N/A1,494
Swiss National Bank   Premium Plus218,9202017-09-300.00%N/A1,344
BROWN ADVISORY INC   Premium Plus216,4532017-09-300.00%N/A1,329
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM   Premium Plus213,1662017-09-300.00%N/A1,309
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM   Premium Plus209,1522017-09-300.00%N/A1,284
ALLIANCEBERNSTEIN L.P.   Premium Plus194,5192017-09-300.00%N/A1,194
Citadel Advisors LLC   Premium Plus176,6012017-09-300.00%N/A1,085

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