aTYR PHARMA INC
ATYR- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001339970
No open-market purchases or sales by aTYR PHARMA INC insiders were filed in the last 90 days; 89 institutions reported holding it in 13F filings for Q2 2026, worth $23.2M in total; no superinvestor holds it.
13F holders, Q2 2025
Institutional positions in aTYR PHARMA INC as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 110
- +23 vs. Q1 2025
- Shares held
- 66.4M
- +4.60M (+7.5%) vs. Q1 2025
- Total value
- $336.5M
- +$149.9M (+80.4%) vs. Q1 2025
- New holders
- 52
- 25 more added
- Sold out
- 29
- 24 more reduced
Compare with Q1 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ATYR on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 89 | $23.2M |
| Q1 2026 | 111 | $43.7M |
| Q4 2025 | 84 | $42.1M |
| Q3 2025 | 103 | $43.9M |
| Q2 2025 | 110 | $336.5M |
| Q1 2025 | 87 | $186.5M |
| Q4 2024 | 77 | $198.6M |
| Q3 2024 | 56 | $84.3M |
| Q2 2024 | 47 | $75.1M |
| Q1 2024 | 56 | $81.5M |
| Q4 2023 | 46 | $58.1M |
| Q3 2023 | 41 | $58.7M |
| Q2 2023 | 41 | $77.0M |
| Q1 2023 | 37 | $72.8M |
| Q4 2022 | 36 | $40.2M |
| Q3 2022 | 33 | $57.2M |
| Q2 2022 | 36 | $53.1M |
| Q1 2022 | 41 | $105.0M |
| Q4 2021 | 47 | $153.5M |
| Q3 2021 | 42 | $172.1M |
| Q2 2021 | 29 | $33.8M |
| Q1 2021 | 25 | $26.3M |
Institutions, Q2 2025
Shares, value and share of portfolio for each institution holding aTYR PHARMA INC; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Millennium Management LLC | 1,600,200 | $8.11M | 0.01% | +1,159+0.1% | Added |
| Woodline Partners LP | 1,681,595 | $8.53M | 0.05% | 00.0% | Unchanged |
| UBS Group AG | 1,745,717 | $8.85M | 0.00% | +108,531+6.6% | Added |
| Geode Capital Management, LLC | 2,098,076 | $10.6M | 0.00% | +1,170,276+126.1% | Added |
| Tikvah Management LLC | 2,460,833 | $12.5M | 4.12% | 00.0% | Unchanged |
| Octagon Capital Advisors LP | 3,820,000 | $19.4M | 4.25% | +268,000+7.5% | Added |
| Vanguard Group Inc | 4,655,048 | $23.6M | 0.00% | +648,313+16.2% | Added |
| BlackRock, Inc. | 5,782,633 | $29.3M | 0.00% | +4,188,652+262.8% | Added |
| FMR LLC | 13,350,665 | $67.7M | 0.00% | +457,136+3.5% | Added |
| Federated Hermes, Inc. | 14,666,600 | $74.4M | 0.14% | 00.0% | Unchanged |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −414,592−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −235,242−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −227,142−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −182,135−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −88,143−100.0% | Sold out |
| Quantessence Capital LLC | 0 | $0 | 0.00% | −61,621−100.0% | Sold out |
| Jefferies Financial Group Inc. | 0 | $0 | 0.00% | −55,600−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −53,209−100.0% | Sold out |
| LMR Partners LLP | 0 | $0 | 0.00% | −52,087−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −48,227−100.0% | Sold out |
| Cannon Global Investment Management, LLC | 0 | $0 | 0.00% | −47,500−100.0% | Sold out |
| Wolverine Trading, LLC | 0 | $0 | 0.00% | −45,327−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −45,451−100.0% | Sold out |
| J. Goldman & Co LP | 0 | $0 | 0.00% | −30,131−100.0% | Sold out |
| American Century Companies Inc | 0 | $0 | 0.00% | −22,703−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −21,434−100.0% | Sold out |
| Capula Management Ltd | 0 | $0 | 0.00% | −21,126−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −19,556−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −19,288−100.0% | Sold out |
| Capstone Investment Advisors, LLC | 0 | $0 | 0.00% | −18,420−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −14,568−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −13,320−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −12,583−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −11,935−100.0% | Sold out |
| Alterna Wealth Management, Inc | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| Point72 Asia (Singapore) Pte. Ltd. | 0 | $0 | 0.00% | −1,255−100.0% | Sold out |
| PFS Partners, LLC | 0 | $0 | 0.00% | −340−100.0% | Sold out |
| Continuum Advisory, LLC | 0 | $0 | 0.00% | −210−100.0% | Sold out |
| Strategic Investment Solutions, Inc. | 0 | $0 | 0.00% | −8−100.0% | Sold out |