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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, 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 Inc.Peter Lynch prefers to buy companies with low institutional ownership.

Date Institutional Ownership
November 30, 2014100
October 31, 2014100
September 30, 201495
August 31, 201494
July 31, 201494
June 30, 201496
May 31, 201492
April 30, 201486
March 31, 201483
February 28, 201476
January 31, 201476
December 31, 201376
November 30, 201312

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, 20145
November 30, 20144
October 31, 20145
September 30, 20144
August 31, 20144
July 31, 20144
June 30, 20145
May 31, 20146

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Dr. Sharon Shacham, M.B.A.,PhDPresident & CSO763,9632.34%2015-01-12
Dr. Michael G. Kauffman,M.D.,PhDCEO562,5961.72%2015-01-12
Paul BrannellySVP, FINANCE & ADMIN, TREAS66,1360.2%2014-05-15
Dr. Mansoor Raza Mirza, M.D.Director4,262less than 0.1%2014-12-01
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
Chione Ltd.10,258,0792014-02-2834.670.00411,759,291
Franklin Advisers, Inc.4,405,1472014-09-3013.510.12153,914,000
Fidelity Management and Research Company4,059,0452014-09-3012.450.02141,823,000
Plio Ltd3,193,4732014-02-2810.790.00128,186,006
Fidelity® Select Biotechnology Portfolio2,977,3282014-11-309.101.19124,690,497
Foresite Capital Management LLC2,378,6152013-11-060.000.000
Delphi Management Partners VIII, LLC2,103,1332014-02-287.110.0084,419,759
Partner Fund Management LP1,125,8542014-09-303.450.9139,337,000
Foresite Capital Management I, LLC1,077,1242014-09-303.3036.0437,635,000
Fidelity® Contrafund® Fund1,059,9472014-11-303.240.0444,390,580

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