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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
July 15, 20154.94
June 30, 20152.7
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, 20159

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
Outstanding
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
Dr. Paul R. Schimmel,PhDN/A12,572less than 0.1%2015-05-12
Kathryn E. FalbergN/A12,572less than 0.1%2015-05-06
Amir NashatN/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
Outstanding
% of Total
Assets Managed
Market Value($1000)
Sofinnova Venture Partners IX LP1,866,1262015-05-060.00N/A0
Polaris Venture Management Co. V,LLC1,827,9922015-05-060.00N/A0
Fidelity Management & Research Company694,5072015-05-313.080.0315,897
Fidelity® Growth Company Fund550,5332015-05-312.440.0312,602
Deerfield Management Co511,5282015-05-120.00N/A0
Fidelity SelectCo, LLC209,6002015-05-310.930.024,798
Fidelity® Select Biotechnology Portfolio171,4002015-05-310.760.023,923
BlackRock Fund Advisors162,7082015-07-170.660.012,763
Vanguard Group, Inc.155,7432015-06-300.69N/A2,884
Fidelity® Series Growth Company Fund143,9742015-05-310.640.033,296

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