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Karyopharm Therapeutics Inc (KPTI) Ownership Data

Short Interest History (%)

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

Date Short Interest
January 15, 201630.22
December 31, 201528.64
December 15, 201528.78
November 30, 201531.47
November 13, 201532.15
October 30, 201533.07
October 15, 201538.24
September 30, 201541.3
September 15, 201546.36
August 31, 201545.56
August 14, 201541.63
July 31, 201541.29
July 15, 201542.26
June 30, 201539.54
June 15, 201540.58
May 29, 201536.36
May 15, 201537.95
April 30, 201536.42
April 15, 201534.74
March 31, 201533.61
March 13, 201529.98
February 27, 201525.49
February 13, 201525.85
January 30, 201526.59
January 15, 201526.57
December 31, 201430.51
December 15, 201425.64
November 28, 201426.59
November 14, 201428.22
October 31, 201427.74
October 15, 201424.7
September 30, 201426.58
September 15, 201422.57
August 29, 201422.92
August 15, 201422.53
July 31, 201421.62
July 15, 201418.49
June 30, 201419
June 13, 201418.7
May 30, 201416.92
May 15, 201416.37
April 30, 201415.83
April 15, 201414.98
March 31, 201411.59
March 14, 201412.45
February 28, 201410.9
February 14, 201411.56
January 31, 20149.59
January 15, 20148.58
December 31, 20138.22
December 13, 20131.82
November 29, 20131.05
November 15, 20130.23

Institutional Ownership History (%)

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

Date Institutional Ownership
September 30, 201583.58
June 30, 201562.01
March 31, 201558.3
December 31, 201462.01
September 30, 201451.96
June 30, 201451.06
March 31, 201486.7
December 31, 201331.36

Insider ownership (%)

This is the historical insider ownership of Karyopharm Therapeutics 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
December 31, 20154.11
November 30, 20153.95
October 31, 20153.96
September 30, 20153.96
August 31, 20153.96
July 31, 20153.96
June 30, 20153.96
May 31, 20153.96
April 30, 20153.96
March 31, 20153.95
February 28, 20154.28
January 31, 20154.28
December 31, 20145.37
November 30, 20144.49
October 31, 20144.52
September 30, 20144.48
August 31, 20144.48
July 31, 20144.48
June 30, 20144.92
May 31, 20145.66

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Dr. Sharon Shacham, M.B.A.,PhDPresident & CSO763,9632.14%2015-01-12
Dr. Michael G. Kauffman,M.D.,PhDCEO562,5961.57%2015-01-12
Paul BrannellySVP, FINANCE & ADMIN, TREAS66,1360.19%2014-05-15
Kenneth E. WegN/A5,000less than 0.1%2015-04-02
Justin A. RenzEVP, CFO & Treasurer5,000less than 0.1%2015-04-02
Dr. Mansoor Raza Mirza, M.D.Director4,262less than 0.1%2014-12-01
Barry E. GreeneDirector3,000less than 0.1%2015-04-02
Ran FrenkelEVP, WW Development Operations3,000less than 0.1%2015-04-06
Christopher Brett PrimianoVP, GEN COUNSEL & SECRETARY1,000less than 0.1%2014-05-13

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value($1000)
Chione Ltd.9,000,0002015-02-2827.52N/A245,340
Franklin Advisers Inc   Premium Plus5,590,1402015-09-3020.170.0675,858
Fidelity Management and Research Company   Premium Plus5,356,6722015-09-3019.330.0172,690
Fidelity® Select Biotechnology Portfolio3,571,1152015-11-309.990.4466,780
Palo Alto Investors, LLC   Premium Plus3,085,7452015-09-3011.141.8841,874
Plio Ltd2,714,7802015-02-288.30N/A74,005
Delphi Ventures LP2,263,0062015-02-286.92N/A61,690
Franklin Biotechnology Discovery Fund1,652,7592015-10-314.630.8322,064
Foresite Capital Management LLC1,499,0012014-12-314.58N/A56,108
Franklin Small Cap Growth Fund1,373,3862015-12-313.840.5918,197

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