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 2021
Institutional positions in aTYR PHARMA INC as of Jun 30, 2021. 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
- 29
- +4 vs. Q1 2021
- Shares held
- 6.92M
- +1.01M (+17.1%) vs. Q1 2021
- Total value
- $33.8M
- +$7.45M (+28.3%) vs. Q1 2021
- New holders
- 7
- 11 more added
- Sold out
- 3
- 5 more reduced
Compare with Q1 2021: 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 2021
Shares, value and share of portfolio for each institution holding aTYR PHARMA INC; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 1,675,880 | $8.18M | 0.00% | +91,196+5.8% | Added |
| Federated Hermes, Inc. | 1,615,000 | $7.88M | 0.01% | 00.0% | Unchanged |
| Alyeska Investment Group, L.P. | 1,274,747 | $6.22M | 0.07% | +291,153+29.6% | Added |
| Vanguard Group Inc | 595,202 | $2.90M | 0.00% | +300,097+101.7% | Added |
| Ikarian Capital, LLC | 300,000 | $1.47M | 0.26% | 00.0% | Unchanged |
| BlackRock Inc. | 224,877 | $1.10M | 0.00% | −28,512−11.3% | Reduced |
| Dimensional Fund Advisors LP | 220,928 | $1.08M | 0.00% | +156,528+243.1% | Added |
| Telemetry Investments, L.L.C. | 179,308 | $875.0K | 1.22% | +61,088+51.7% | Added |
| Renaissance Technologies LLC | 176,255 | $860.0K | 0.00% | −65,705−27.2% | Reduced |
| Polaris Venture Management Co. V, L.L.C. | 130,572 | $637.0K | 1.02% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 119,950 | $585.0K | 0.00% | +105,850+750.7% | Added |
| Geode Capital Management, LLC | 109,761 | $535.0K | 0.00% | +49,513+82.2% | Added |
| State Street Corp | 55,199 | $269.0K | 0.00% | +55,199 | New |
| Acadian Asset Management LLC | 42,724 | $208.0K | 0.00% | −59,973−58.4% | Reduced |
| Ensign Peak Advisors, Inc | 37,884 | $185.0K | 0.00% | 00.0% | Unchanged |
| Boothbay Fund Management, LLC | 32,430 | $158.0K | 0.01% | 00.0% | Unchanged |
| Millennium Management LLC | 30,386 | $148.0K | 0.00% | +30,386 | New |
| Citadel Advisors LLC | 29,873 | $145.0K | 0.00% | +16,403+121.8% | Added |
| Northern Trust Corp | 26,105 | $127.0K | 0.00% | +4,072+18.5% | Added |
| Two Sigma Investments, LP | 14,446 | $70.0K | 0.00% | +14,446 | New |
| XTX Topco Ltd | 12,265 | $60.0K | 0.02% | +12,265 | New |
| Susquehanna International Group, LLP | 10,839 | $53.0K | 0.00% | +10,839 | New |
| UBS Group AG | 3,164 | $15.0K | 0.00% | +3,164 | New |
| Tower Research Capital LLC (TRC) | 188 | $1.00K | 0.00% | −15,063−98.8% | Reduced |
| Bank of America Corp | 300 | $1.00K | 0.00% | +260+650.0% | Added |
| Wells Fargo & Company | 97 | $0 | 0.00% | +35+56.5% | Added |
| Group One Trading, L.P. | 43 | $0 | 0.00% | 00.0% | Unchanged |
| Ironwood Financial, llc | 50 | $0 | 0.00% | −6−10.7% | Reduced |
| Royal Bank of Canada | 1 | $0 | 0.00% | +1 | New |
| Spire Wealth Management | 0 | $0 | 0.00% | −14,000−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −11,066−100.0% | Sold out |
| Sowell Financial Services LLC | 0 | $0 | 0.00% | −100−100.0% | Sold out |