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, Q4 2025
Institutional positions in aTYR PHARMA INC as of Dec 31, 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
- 84
- −18 vs. Q3 2025
- Shares held
- 54.8M
- −7.06M (−11.4%) vs. Q3 2025
- Total value
- $42.1M
- −$1.77M (−4.0%) vs. Q3 2025
- New holders
- 16
- 23 more added
- Sold out
- 34
- 25 more reduced
1 institution that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding aTYR PHARMA INC; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| DLD Asset Management, LP | 0 | $0 | 0.00% | −40,000−100.0% | Sold out |
| Profund Advisors LLC | 0 | $0 | 0.00% | −36,785−100.0% | Sold out |
| Courier Capital LLC | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| Leonteq Securities AG | 0 | $0 | 0.00% | −21,146−100.0% | Sold out |
| Connor, Clark & Lunn Investment Management Ltd. | 0 | $0 | 0.00% | −20,994−100.0% | Sold out |
| Hobbs Group Advisors, LLC | 0 | $0 | 0.00% | −18,653−100.0% | Sold out |
| Blue Rock Wealth Management LLC | 0 | $0 | 0.00% | −17,000−100.0% | Sold out |
| North Star Asset Management Inc | 0 | $0 | 0.00% | −16,800−100.0% | Sold out |
| Atom Investors LP | 0 | $0 | 0.00% | −13,547−100.0% | Sold out |
| United Bank | 0 | $0 | 0.00% | −11,970−100.0% | Sold out |
| Prudential Financial Inc | 0 | $0 | 0.00% | −10,890−100.0% | Sold out |
| Signaturefd, LLC | 0 | $0 | 0.00% | −1,809−100.0% | Sold out |
| Quadrant Capital Group LLC | 0 | $0 | 0.00% | −462−100.0% | Sold out |
| US Bancorp | 0 | $0 | 0.00% | −316−100.0% | Sold out |
| Global Retirement Partners, LLC | 0 | $0 | 0.00% | −300−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −91−100.0% | Sold out |
| Financial Consulate, Inc | 0 | $0 | 0.00% | −55−100.0% | Sold out |
| T. Rowe Price Investment Management, Inc. | 0 | $0 | 0.00% | −141−100.0% | Sold out |
| Wolverine Trading, LLC | – | – | – | – | Not filed |