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

Date Institutional Ownership
March 31, 201558
December 31, 201462
September 30, 201452
June 30, 201451
March 31, 201487
December 31, 201331

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
July 31, 20154
June 30, 20154
May 31, 20154
April 30, 20154
March 31, 20154
February 28, 20154
January 31, 20154
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 & CSO763,9632.14%2015-01-12
Dr. Michael G. Kauffman,M.D.,PhDCEO562,5961.58%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
Ran FrenkelEVP, WW Development Operations3,000less than 0.1%2015-04-06
Barry E. GreeneDirector3,000less than 0.1%2015-04-02
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)
Fidelity Management and Research Company   Premium Plus5,354,2202015-06-3015.000.02145,688
Franklin Advisers, Inc.   Premium Plus4,689,3012015-06-3013.140.10127,596
Fidelity® Select Biotechnology Portfolio3,415,9142015-06-309.570.5792,947
Palo Alto Investors, LLC   Premium Plus1,731,5302015-06-304.852.0947,115
Foresite Capital Management LLC1,499,0012014-12-314.58N/A56,108
State Street Corp   Premium Plus1,234,2352015-06-303.46N/A33,582
BlackRock Fund Advisors   Premium Plus1,064,6282015-06-302.980.0128,969
Franklin Small Cap Growth Fund1,061,2862015-06-302.970.7828,878
Franklin Biotechnology Discovery1,039,5682015-04-302.910.9828,235
SPDR® S&P Biotech ETF958,0382015-08-191.770.5212,981

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