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aTyr Pharma Inc (LIFE) Ownership Data

Short Interest History (%)

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

Date Short Interest
June 15, 20151.48
May 29, 20150.78
May 15, 20150.54

Institutional Ownership History (%)

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

Date Institutional Ownership
June 30, 20156

Insider ownership (%)

This is the historical insider ownership of aTyr Pharma 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
April 30, 20152

Top Direct Holders

HolderPositionShares% of Shares
Report Date
Dr. John D. MendleinN/A245,9711.04%2015-05-12
John K. ClarkeN/A104,8780.44%2015-05-12
Ms. Melissa A. AshlockN/A68,1640.29%2015-05-06
Mr. Frederic ChereauN/A12,867less than 0.1%2015-05-06
Amir NashatN/A12,572less than 0.1%2015-05-12
Kathryn E. FalbergN/A12,572less than 0.1%2015-05-06
Dr. Paul R. Schimmel,PhDN/A12,572less than 0.1%2015-05-12
Dr. David M. Weiner, M.D.N/A5,028less than 0.1%2015-05-06
Mr. Stan BlackburnN/A2,149less than 0.1%2015-05-06
Mr. Holly D. ChrzanowskiN/A1,885less than 0.1%2015-05-06

Top Fund Holders

HolderSharesReport Date% of Shares
% of Total
Assets Managed
Market Value
Sofinnova Venture Partners IX LP1,866,1262015-05-060.000.000
Polaris Venture Management Co. V,LLC1,827,9922015-05-060.000.000
Fidelity Management & Research Company694,5072015-05-313.080.0315,897,265
Fidelity® Growth Company Fund550,5332015-05-312.440.0312,601,700
Deerfield Management Co511,5282015-05-120.000.000
Fidelity SelectCo, LLC209,6002015-05-310.930.024,797,744
Fidelity® Select Biotechnology Portfolio171,4002015-05-310.760.023,923,346
BlackRock Fund Advisors157,9782015-07-010.640.012,685,626
Fidelity® Series Growth Company Fund143,9742015-05-310.640.033,295,565
J.P. Morgan Investment Management Inc.138,3002015-05-310.610.103,165,687

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