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Keryx Biopharmaceuticals Inc (KERX) Ownership Data

Short Interest History (%)

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

Date Short Interest (%)Short Interest (Shares in Mil)
September 29, 201719.6715.81
September 15, 201721.9517.64
August 31, 201722.2717.90
August 15, 201722.2817.90
July 31, 201724.2519.49
July 14, 201724.1719.43
June 30, 201723.0518.52
June 15, 201722.1117.77
May 31, 20172217.68
May 15, 201721.7717.50
April 28, 201727.3121.95
April 13, 201727.4322.05
March 31, 201727.6322.21
March 15, 201725.620.57
February 28, 201726.5420.71
February 15, 201727.1521.20
January 31, 201727.821.70
January 13, 201726.7820.90
December 30, 201625.5919.97
December 15, 201625.7220.08
November 30, 201627.0221.10
November 15, 201627.6121.55
October 31, 201629.122.71
October 14, 201626.7920.91
September 30, 201626.4520.65
September 15, 201624.7419.31
August 31, 201621.5916.85
August 15, 201622.0117.18
July 29, 201622.5117.57
July 15, 201621.6316.89
June 30, 201622.317.41
June 15, 201625.4619.88
May 31, 201625.1719.65
May 13, 201625.5119.92
April 29, 201626.1520.41
April 15, 201625.4819.89
March 31, 201629.0122.65
March 15, 201629.5823.09
February 29, 201630.0125.03
February 12, 201629.0924.27
January 29, 201628.8224.04
January 15, 201630.0225.04
December 31, 201528.2323.55
December 15, 201532.0826.75
November 30, 201530.8225.71
November 13, 201533.5127.95
October 30, 201534.328.61
October 15, 201536.2430.23
September 30, 201544.737.28
September 15, 201540.0633.41
August 31, 201541.0734.25
August 14, 201542.7935.69
July 31, 20154235.03
July 15, 201540.8834.10
June 30, 201540.3133.62
June 15, 201538.432.03
May 29, 201536.0130.04
May 15, 201540.1233.46
April 30, 201540.1233.47
April 15, 201538.1930.93
March 31, 201537.8230.64
March 13, 201535.5928.83
February 27, 201532.2926.16
February 13, 201530.5624.75
January 30, 201529.9824.29
January 15, 201529.3323.76
December 31, 201428.8723.39
December 15, 201427.6922.43
November 28, 201428.0722.74
November 14, 201427.4222.21
October 31, 201427.6322.38
October 15, 201429.5223.91
September 30, 201430.3524.59
September 15, 201424.4821.91
August 29, 201422.8420.43
August 15, 201423.4320.97
July 31, 201423.5121.04
July 15, 201422.0519.74
June 30, 201422.2519.91
June 13, 201422.3720.02
May 30, 201422.0219.70
May 15, 201422.6520.27
April 30, 201422.2219.89
April 15, 201424.7717.69
March 31, 201423.8417.02
March 14, 201423.4816.77
February 28, 201422.7616.25
February 14, 201422.9316.37
January 31, 201420.7714.83
January 15, 201423.8417.02
December 31, 201323.1916.56
December 13, 201322.5116.07
November 29, 201322.3715.97
November 15, 201323.2516.61
October 31, 201320.7314.80
October 15, 201319.2113.72
September 30, 201319.4413.88
September 13, 201319.1513.67
August 30, 201319.2813.77
August 15, 201319.313.78
July 31, 201317.9212.79
July 15, 201319.2213.72
June 28, 201320.1114.36
June 14, 201320.0414.31
May 31, 201320.9114.93
May 15, 201321.9215.65
April 30, 201323.6116.86
April 15, 201321.9115.32
March 28, 201320.7414.50
March 15, 201316.2311.35
February 28, 201315.3710.74
February 15, 20131711.88
January 31, 201317.1111.96
January 15, 201315.7611.02
December 31, 201216.0111.19
December 14, 201216.3811.45
November 30, 201216.511.53
November 15, 201215.0710.53
October 31, 201214.29.93
October 15, 201214.159.89
September 28, 201214.069.83
September 14, 201214.7410.30
August 31, 201215.3410.72
August 15, 201215.4110.77
July 31, 201215.0910.55
July 13, 201214.6510.24
June 29, 201215.4410.79
June 15, 201216.0511.22
May 31, 201216.2811.38
May 15, 201214.3610.04
April 30, 201214.9910.48
April 13, 201215.889.64
March 30, 201222.7713.82
March 15, 201221.5813.10
February 29, 201219.0211.54
February 15, 201218.6211.30
January 31, 201218.5111.23
January 13, 201218.2311.06
December 30, 201118.1211.00
December 15, 201120.8912.68
November 30, 201121.0312.76
November 15, 201121.7513.20
October 31, 201119.6811.94
October 14, 201119.1611.63
September 30, 201118.5111.23
September 15, 201118.6911.34
August 31, 201117.2110.44
August 15, 201116.5710.05
July 29, 201116.439.97
July 15, 201116.319.90
June 30, 201115.989.70
June 15, 201115.169.20
May 31, 201115.239.24
May 13, 201115.169.20
April 29, 201115.129.18
April 15, 201115.868.91
March 31, 201113.287.47
March 15, 201113.497.58
February 28, 201113.147.38
February 15, 201112.957.28
January 31, 201113.057.34
January 14, 201112.917.26
December 31, 201013.127.38
December 15, 201014.548.18
November 30, 201013.647.67
November 15, 201013.67.65
October 29, 201013.057.33
October 15, 201012.597.08
September 30, 201011.996.74
September 15, 201013.387.52
August 31, 201013.757.73
August 13, 201014.17.93
July 30, 201015.198.54
July 15, 201015.578.75
June 30, 201017.099.61
June 15, 201012.557.05
May 28, 201011.746.60
May 14, 201010.816.08
April 30, 20107.534.23

Institutional Ownership History (%)

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

Date Institutional Ownership (%)Institutional Ownership (Shares in Mil)
September 30, 201763.275.05
June 30, 201762.7774.37
March 31, 201759.7764.33
December 31, 201660.6164.14
September 30, 201660.0963.65
June 30, 201661.2364.82
March 31, 201661.7765.37
December 31, 201567.3570.82
September 30, 201583.4786.98
June 30, 201586.5991.06
March 31, 201589.3392.56
December 31, 201483.1677.08
September 30, 201483.5176.82
June 30, 201474.9968.78
March 31, 201473.9867.52
December 31, 201362.5751.71
September 30, 201361.4450.22
June 30, 201362.0350.75
March 31, 201364.2252.51
December 31, 20122719.43
September 30, 201227.1519.53
June 30, 20122517.98
March 31, 201221.8815.58
December 31, 201127.7819.73
September 30, 201129.6821.08
June 30, 201135.9225.04
March 31, 201129.9218.41
December 31, 201029.4918.11
September 30, 201023.4414.34
June 30, 201023.1413.63
March 31, 201018.9710.83
December 31, 200915.818.93
September 30, 200918.4810.32
June 30, 20097.963.80
March 31, 200910.615.05
December 31, 200824.9411.27
September 30, 200847.2121.19
June 30, 200840.8618.42
March 31, 200858.7425.89
June 30, 200699.8843.04
March 31, 200693.343.80
December 31, 200586.4832.63
September 30, 200581.5530.72
June 30, 200573.923.43
March 31, 200568.2321.44
December 31, 200460.0819.24
September 30, 200459.8118.57
June 30, 200457.9318.04
March 31, 200443.7613.25
December 31, 200310.172.54
September 30, 20035.741.33
June 30, 20036.51.67
March 31, 20036.711.60
December 31, 20028.051.89
September 30, 20027.981.90
June 30, 200210.532.32
March 31, 200213.32.44
December 31, 200110.382.60
September 30, 20015.651.14
June 30, 20014.370.87
March 31, 20012.890.57
December 31, 20004.140.81
September 30, 20001.810.35

Insider ownership (%)

This is the historical insider ownership of Keryx Biopharmaceuticals 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)
June 30, 20176.587.14
May 31, 20176.587.14
April 30, 20176.647.15
March 31, 20176.296.77
February 28, 20176.396.77
January 31, 20176.436.81
December 31, 20166.446.82
November 30, 20166.446.82
October 31, 20166.446.82
September 30, 20166.446.82
August 31, 20166.446.82
July 31, 20166.466.83
June 30, 20166.466.83
May 31, 20166.416.78
April 30, 20166.416.79
March 31, 20166.426.79
February 29, 20166.466.79
January 31, 20166.466.79
December 31, 20156.426.79
November 30, 20156.186.50
October 31, 20156.276.50
September 30, 20156.276.50
August 31, 20156.276.50
July 31, 20156.256.47
June 30, 20156.26.42
May 31, 20156.146.37
April 30, 20156.116.33
March 31, 20156.026.24
February 28, 20155.996.21
January 31, 20156.766.21
December 31, 20147.036.47
November 30, 20146.686.14
October 31, 20146.686.14
September 30, 20146.686.14
August 31, 20146.826.26
July 31, 20146.986.41
June 30, 201476.41
May 31, 20146.946.35
March 31, 20149.116.35
February 28, 20149.396.54
January 31, 20149.286.47
December 31, 20139.286.47
November 30, 20139.346.51
October 31, 20139.346.51
September 30, 20139.346.51
August 31, 20138.756.10
July 31, 20138.776.12
June 30, 20138.776.12
May 31, 20138.676.04
April 30, 20138.716.07
March 31, 20138.716.07
January 31, 20138.786.12
November 30, 20128.726.08
October 31, 20128.726.08
September 30, 20128.726.08
August 31, 20128.736.08
July 31, 20128.736.08
June 30, 20128.736.08
May 31, 20128.636.01
April 30, 20128.055.61
March 31, 201285.57
February 29, 20127.885.49
January 31, 20127.885.49
December 31, 20117.885.49
November 30, 20117.945.54
October 31, 20117.945.54
September 30, 20117.945.54
August 31, 20117.955.54
July 31, 20117.95.50
June 30, 20117.865.43
May 31, 20117.875.43
April 30, 20118.915.48
March 31, 20118.915.48
February 28, 20118.935.50
January 31, 20118.985.50
December 31, 20108.985.50
November 30, 20108.945.47
October 31, 20109.615.88
September 30, 20109.985.88
August 31, 201010.025.90
July 31, 201010.15.91
June 30, 201010.095.91
May 31, 201010.065.89
April 30, 201011.526.55
March 31, 201011.716.66
February 28, 201011.516.44
January 31, 201011.346.35
December 31, 200911.26.27
November 30, 200911.176.26
October 31, 200911.196.26
September 30, 200911.196.26
August 31, 200912.876.16
July 31, 200912.876.16
June 30, 200912.876.16
May 31, 200912.566.02
April 30, 200911.75.60
March 31, 200911.495.50
February 28, 200912.125.50
January 31, 200912.125.50
December 31, 200812.125.50
November 30, 200812.125.50
October 31, 20087.13.20
September 30, 20087.13.20
August 31, 20087.13.20
July 31, 20086.342.77
June 30, 20086.342.77
May 31, 20086.342.77
April 30, 20085.62.45
March 31, 20085.612.46
February 29, 20085.612.46
January 31, 20085.612.46
December 31, 20075.632.46
November 30, 20075.632.46
October 31, 20075.632.46
September 30, 20075.632.45
August 31, 20075.632.45
July 31, 20075.622.45
June 30, 20075.632.45
May 31, 20077.923.45
April 30, 20077.913.44
March 31, 20077.923.44
February 28, 20077.833.41
January 31, 20077.923.42
December 31, 20067.853.39
November 30, 20067.853.39
October 31, 20067.853.39
September 30, 20067.853.39
June 30, 20067.873.39
May 31, 20067.873.39
April 30, 20068.933.39
March 31, 200612.94.90
February 28, 20063.511.33
January 31, 20063.531.33
December 31, 20056.842.58
November 30, 20056.852.58
October 31, 20059.193.46
September 30, 20059.253.46
August 31, 20059.253.46
July 31, 20059.253.46
June 30, 20059.483.46
May 31, 200510.993.46
April 30, 200510.993.46
March 31, 200510.993.46
February 28, 200512.383.90
January 31, 200512.533.90
December 31, 200412.533.90
November 30, 200412.533.90
October 31, 200422.436.98
September 30, 200412.733.93
August 31, 200412.83.93
July 31, 200412.83.93
June 30, 200412.93.93
May 31, 200412.93.93
April 30, 200412.813.89
March 31, 200418.173.89
February 29, 200417.363.72

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Dr. Lindsay A. Rosenwald, M.D.N/A1,735,8631.46%2006-05-22
Michael S. WeissN/A1,320,4181.11%2010-04-23
Ron BentsurN/A778,8010.66%2015-01-04
Peter Morgan KashN/A760,7500.64%2004-01-29
Greg MadisonPresident and CEO383,7110.32%2017-02-14
Michael P. TarnokN/A338,6000.29%2015-06-17
James F. OlivieroN/A209,4060.18%2015-07-06
Senator Wyche Fowler,JrN/A175,0000.15%2015-06-17
Kevin J. CameronN/A160,0000.13%2016-05-26
Dr. Eric A. Rose, M.D.N/A155,0000.13%2008-11-14

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value($1000)
Seth Klarman Premium25,791,6782017-06-302.140.22186,474
VANGUARD GROUP INC   Premium Plus7,198,2692017-06-300.000.0652,043
Consonance Capital Management LP   Premium Plus7,005,0412017-06-305.970.0650,646
David Abrams Premium5,719,1762017-06-301.640.0541,350
BlackRock Inc.   Premium Plus5,405,8262017-06-300.000.0539,085
STATE STREET CORP   Premium Plus3,127,8482017-06-300.000.0322,611
MILLENNIUM MANAGEMENT LLC   Premium Plus1,855,8392017-06-300.020.0213,418
RICE HALL JAMES & ASSOCIATES, LLC   Premium Plus1,666,9342017-06-300.520.0112,052
Steven Cohen Premium1,552,7002017-06-300.060.0111,226
LEGG MASON CAPITAL MANAGEMENT LLC   Premium Plus1,471,0442017-06-300.230.0110,636
Ameriprise Financial Inc   Premium Plus1,169,7722017-06-300.000.018,459
NORTHERN TRUST CORP   Premium Plus1,089,8602017-06-300.000.017,881
Bank of New York Mellon Corp   Premium Plus963,0542017-06-300.000.016,963
GEODE CAPITAL MANAGEMENT, LLC   Premium Plus852,1622017-06-300.000.016,161
Old West Investment Management, LLC   Premium Plus785,8362017-06-303.030.015,681
GOLDMAN SACHS GROUP INC   Premium Plus685,6732017-06-300.000.014,957
SUSQUEHANNA INTERNATIONAL GROUP, LLP   Premium Plus513,1002017-06-300.000.003,710
SCHWAB CHARLES INVESTMENT MANAGEMENT INC   Premium Plus441,1062017-06-300.000.003,190
Monarch Partners Asset Management LLC   Premium Plus423,1602017-06-300.300.003,059
Boston Partners   Premium Plus409,0512017-06-300.000.002,957

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