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, Q1 2024
Institutional positions in aTYR PHARMA INC as of Mar 31, 2024. 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
- 56
- +10 vs. Q4 2023
- Shares held
- 41.8M
- +576.1K (+1.4%) vs. Q4 2023
- Total value
- $81.5M
- +$23.4M (+40.2%) vs. Q4 2023
- New holders
- 15
- 21 more added
- Sold out
- 5
- 10 more reduced
Compare with Q4 2023: 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, Q1 2024
Shares, value and share of portfolio for each institution holding aTYR PHARMA INC; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Federated Hermes, Inc. | 10,169,600 | $19.8M | 0.05% | 00.0% | Unchanged |
| FMR LLC | 8,923,210 | $17.4M | 0.00% | +139,201+1.6% | Added |
| Logos Global Management LP | 3,100,000 | $6.04M | 0.64% | −2,750,000−47.0% | Reduced |
| Vanguard Group Inc | 2,652,157 | $5.17M | 0.00% | +283,703+12.0% | Added |
| Tikvah Management LLC | 2,460,833 | $4.80M | 1.50% | 00.0% | Unchanged |
| Citadel Advisors LLC | 1,903,346 | $3.71M | 0.00% | +149,746+8.5% | Added |
| Woodline Partners LP | 1,681,279 | $3.28M | 0.03% | +1,681,279 | New |
| Alyeska Investment Group, L.P. | 1,505,555 | $2.94M | 0.02% | −950,000−38.7% | Reduced |
| Checkpoint Capital L.P. | 1,446,477 | $2.82M | 1.89% | −57,077−3.8% | Reduced |
| BlackRock Inc. | 1,364,880 | $2.66M | 0.00% | +2,520+0.2% | Added |
| Renaissance Technologies LLC | 1,272,855 | $2.48M | 0.00% | +394,883+45.0% | Added |
| Octagon Capital Advisors LP | 700,000 | $1.36M | 0.17% | +700,000 | New |
| Barclays PLC | 604,299 | $1.18M | 0.00% | +525,327+665.2% | Added |
| Ghost Tree Capital, LLC | 600,000 | $1.17M | 0.38% | +600,000 | New |
| Geode Capital Management, LLC | 595,111 | $1.16M | 0.00% | +8,114+1.4% | Added |
| Tang Capital Management LLC | 471,134 | $918.7K | 0.10% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 224,147 | $437.0K | 0.03% | +114,983+105.3% | Added |
| Goldman Sachs Group Inc | 217,233 | $423.6K | 0.00% | +73,663+51.3% | Added |
| Dimensional Fund Advisors LP | 196,744 | $383.7K | 0.00% | +54,496+38.3% | Added |
| State Street Corp | 166,808 | $325.3K | 0.00% | 00.0% | Unchanged |
| Marshall Wace, LLP | 158,619 | $309.3K | 0.00% | +158,619 | New |
| Bank of America Corp | 156,175 | $304.5K | 0.00% | +7,416+5.0% | Added |
| Two Sigma Advisers, LP | 142,350 | $277.6K | 0.00% | −5,400−3.7% | Reduced |
| Northern Trust Corp | 99,166 | $193.4K | 0.00% | −936−0.9% | Reduced |
| Pale Fire Capital SE | 91,232 | $177.9K | 0.02% | −202,474−68.9% | Reduced |
| XTX Topco Ltd | 83,328 | $162.5K | 0.02% | +14,760+21.5% | Added |
| Citigroup Inc | 78,620 | $153.3K | 0.00% | 00.0% | Unchanged |
| Millennium Management LLC | 62,481 | $121.8K | 0.00% | −62,745−50.1% | Reduced |
| Jane Street Group, LLC | 62,140 | $121.2K | 0.00% | +62,140 | New |
| Kingswood Wealth Advisors, LLC | 60,000 | $117.0K | 0.01% | +60,000 | New |
| American Century Companies Inc | 54,043 | $105.4K | 0.00% | +31,963+144.8% | Added |
| Jump Financial, LLC | 49,904 | $97.3K | 0.00% | +49,904 | New |
| Acadian Asset Management LLC | 45,366 | $87.0K | 0.00% | +24,704+119.6% | Added |
| Y-Intercept (Hong Kong) Ltd | 43,892 | $85.6K | 0.01% | +43,892 | New |
| Main Street Financial Solutions, LLC | 34,475 | $67.2K | 0.01% | +34,475 | New |
| JPMorgan Chase & Co | 33,854 | $66.0K | 0.00% | +21,987+185.3% | Added |
| Farther Finance Advisors, LLC | 30,323 | $57.9K | 0.00% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 28,256 | $55.0K | 0.00% | +28,256 | New |
| Charles Schwab Investment Management Inc | 26,689 | $52.0K | 0.00% | 00.0% | Unchanged |
| D.A. Davidson & Co. | 26,350 | $51.4K | 0.00% | +13,600+106.7% | Added |
| Schonfeld Strategic Advisors LLC | 20,500 | $40.0K | 0.00% | +20,500 | New |
| UBS Group AG | 20,192 | $39.4K | 0.00% | +3,766+22.9% | Added |
| Morgan Stanley | 19,718 | $38.5K | 0.00% | +3,795+23.8% | Added |
| CTC Alternative Strategies, Ltd. | 17,600 | $34.3K | 0.02% | +17,600 | New |
| Two Sigma Securities, LLC | 17,487 | $34.1K | 0.00% | +17,487 | New |
| Prudential Financial Inc | 16,000 | $31.2K | 0.00% | +800+5.3% | Added |
| Royal Bank of Canada | 15,523 | $30.0K | 0.00% | −75,768−83.0% | Reduced |
| Cubist Systematic Strategies, LLC | 11,736 | $22.9K | 0.00% | −5,850−33.3% | Reduced |
| Two Sigma Investments, LP | 10,088 | $19.7K | 0.00% | −16,450−62.0% | Reduced |
| Alterna Wealth Management, Inc | 10,000 | $19.5K | 0.02% | 00.0% | Unchanged |
| Qube Research & Technologies Ltd | 9,644 | $18.8K | 0.00% | +9,456+5,029.8% | Added |
| Tower Research Capital LLC (TRC) | 6,267 | $12.2K | 0.00% | +6,267 | New |
| Simplex Trading, LLC | 6,021 | $11.0K | 0.00% | +6,021 | New |
| Wells Fargo & Company | 1,912 | $3.73K | 0.00% | +7+0.4% | Added |
| PFS Partners, LLC | 340 | $663 | 0.00% | 00.0% | Unchanged |
| Caldwell Sutter Capital, Inc. | 52 | $101 | 0.00% | 00.0% | Unchanged |
| Stonepine Capital Management, LLC | 0 | $0 | 0.00% | −482,258−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −119,450−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −26,409−100.0% | Sold out |
| Bank of New York Mellon Corp | 0 | $0 | 0.00% | −16,426−100.0% | Sold out |
| Granite Bay Wealth Management, LLC | 0 | $0 | 0.00% | −18,000−100.0% | Sold out |