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