aTyr Pharma, Inc. (ATYR)
Healthcare
Biotechnology
0.49 $
+1.2%
vs. previous close
Closing price · As of: 31. Jul 2026
Who owns aTyr Pharma, Inc. (ATYR)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 97.4% of the shares are freely tradable; institutional investors hold 48.6%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
48.6%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
2.5%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
97.4%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
21.8%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
98Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| FMR Inc | 15.00 | 14,706,843 | +0.1 | 03/31/2026 |
| Federated Hermes Inc | 10.72 | 10,509,678 | +0.0 | 03/31/2026 |
| BlackRock Inc | 6.57 | 6,443,904 | -1.6 | 03/31/2026 |
| Vanguard Group Inc | 5.06 | 4,961,871 | -11.9 | 12/31/2025 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Fidelity Growth Compy Commingled Pl S | 6.29 | 6,169,122 | +0.1 | 04/30/2026 |
| Federated Hermes Kaufmann R | 5.70 | 5,585,000 | +0.0 | 03/31/2026 |
| Federated Hermes Kaufmann Growth | 5.70 | 5,585,000 | +0.0 | 03/31/2026 |
| Federated Hermes Kaufmann Small Cap Grow | 4.90 | 4,806,877 | +0.0 | 03/31/2026 |
| Federated Hermes Kaufmann Small Cap A | 4.90 | 4,806,877 | +0.0 | 03/31/2026 |
| Fidelity Growth Company Fund | 4.31 | 4,228,832 | +0.0 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.