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 2022
Institutional positions in aTYR PHARMA INC as of Dec 31, 2022. 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
- 36
- +3 vs. Q3 2022
- Shares held
- 18.4M
- −706.5K (−3.7%) vs. Q3 2022
- Total value
- $40.2M
- −$17.0M (−29.7%) vs. Q3 2022
- New holders
- 8
- 12 more added
- Sold out
- 5
- 8 more reduced
Compare with Q3 2022: 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 2022
Shares, value and share of portfolio for each institution holding aTYR PHARMA INC; share changes are against Q3 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Federated Hermes, Inc. | 5,231,600 | $11.5M | 0.03% | +9,350+0.2% | Added |
| FMR LLC | 4,351,407 | $9.53M | 0.00% | +57,651+1.3% | Added |
| Alyeska Investment Group, L.P. | 1,378,747 | $3.02M | 0.03% | +300,000+27.8% | Added |
| Tikvah Management LLC | 1,350,833 | $2.96M | 1.41% | 00.0% | Unchanged |
| VR Adviser, LLC | 1,171,436 | $2.57M | 0.43% | −227,453−16.3% | Reduced |
| Vanguard Group Inc | 1,140,126 | $2.50M | 0.00% | +593+0.1% | Added |
| Walleye Capital LLC | 750,000 | $1.64M | 0.04% | +343,114+84.3% | Added |
| Telemetry Investments, L.L.C. | 624,000 | $1.37M | 3.19% | +131,500+26.7% | Added |
| Citigroup Inc | 428,460 | $938.3K | 0.00% | +428,460 | New |
| BlackRock Inc. | 268,946 | $589.0K | 0.00% | +1,848+0.7% | Added |
| Geode Capital Management, LLC | 242,239 | $530.0K | 0.00% | +2,743+1.1% | Added |
| Dimensional Fund Advisors LP | 197,692 | $433.0K | 0.00% | +28,332+16.7% | Added |
| Renaissance Technologies LLC | 166,076 | $364.0K | 0.00% | −21,449−11.4% | Reduced |
| Two Sigma Investments, LP | 162,538 | $356.0K | 0.00% | −17,476−9.7% | Reduced |
| Two Sigma Advisers, LP | 156,150 | $342.0K | 0.00% | −27,000−14.7% | Reduced |
| Marshall Wace, LLP | 140,296 | $307.2K | 0.00% | −35,614−20.2% | Reduced |
| Tang Capital Management LLC | 123,430 | $270.3K | 0.04% | −990,023−88.9% | Reduced |
| State Street Corp | 82,908 | $181.6K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 71,768 | $157.0K | 0.00% | +23,041+47.3% | Added |
| Millennium Management LLC | 68,106 | $149.0K | 0.00% | +68,106 | New |
| Northern Trust Corp | 45,871 | $100.5K | 0.00% | 00.0% | Unchanged |
| Ensign Peak Advisors, Inc | 37,884 | $83.0K | 0.00% | 00.0% | Unchanged |
| Citadel Advisors LLC | 37,837 | $82.9K | 0.00% | +37,837 | New |
| Acadian Asset Management LLC | 26,419 | $57.0K | 0.00% | +26,419 | New |
| Wolverine Trading, LLC | 22,685 | $50.0K | 0.00% | +22,685 | New |
| Tower Research Capital LLC (TRC) | 17,443 | $38.0K | 0.00% | −23,522−57.4% | Reduced |
| D.A. Davidson & Co. | 12,800 | $28.0K | 0.00% | +1,000+8.5% | Added |
| Simplex Trading, LLC | 12,214 | $26.0K | 0.00% | +12,214 | New |
| Tocqueville Asset Management L.P. | 10,150 | $22.2K | 0.00% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 10,000 | $21.9K | 0.00% | 00.0% | Unchanged |
| Baker Bros. Advisors LP | 8,565 | $18.8K | 0.00% | −192,796−95.7% | Reduced |
| JPMorgan Chase & Co | 2,597 | $6.00K | 0.00% | +2,597 | New |
| Wells Fargo & Company | 1,695 | $3.71K | 0.00% | +9+0.5% | Added |
| RE Dickinson Investment Advisors, LLC | 300 | $1.00K | 0.00% | 00.0% | Unchanged |
| PFS Partners, LLC | 406 | $890 | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 64 | $140 | 0.00% | +64 | New |
| Stonepine Capital Management, LLC | 0 | $0 | 0.00% | −600,980−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −45,542−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −14,461−100.0% | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −5,975−100.0% | Sold out |
| BNP Paribas Arbitrage, SA | 0 | $0 | 0.00% | −1,784−100.0% | Sold out |