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, Q3 2021
Institutional positions in aTYR PHARMA INC as of Sep 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
- 42
- +13 vs. Q2 2021
- Shares held
- 19.0M
- +12.0M (+174.0%) vs. Q2 2021
- Total value
- $172.1M
- +$138.4M (+409.9%) vs. Q2 2021
- New holders
- 17
- 17 more added
- Sold out
- 4
- 5 more reduced
Compare with Q2 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, Q3 2021
Shares, value and share of portfolio for each institution holding aTYR PHARMA INC; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Ironwood Financial, llc | 50 | $0 | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 1 | $0 | 0.00% | +1 | New |
| Charter Oak Capital Management, LLC | 150 | $1.00K | 0.00% | +150 | New |
| Bank of America Corp | 382 | $3.00K | 0.00% | +82+27.3% | Added |
| Carmichael Hill & Associates, Inc. | 300 | $3.00K | 0.00% | +300 | New |
| Tower Research Capital LLC (TRC) | 681 | $6.00K | 0.00% | +493+262.2% | Added |
| Wells Fargo & Company | 1,588 | $15.0K | 0.00% | +1,491+1,537.1% | Added |
| Group One Trading, L.P. | 2,022 | $18.0K | 0.00% | +1,979+4,602.3% | Added |
| Sheaff Brock Investment Advisors, LLC | 11,000 | $100.0K | 0.01% | +11,000 | New |
| Price T Rowe Associates Inc | 12,024 | $109.0K | 0.00% | +12,024 | New |
| Tocqueville Asset Management L.P. | 14,850 | $135.0K | 0.00% | +14,850 | New |
| Cutler Group LP | 15,524 | $140.0K | 0.01% | +15,524 | New |
| Millennium Management LLC | 23,968 | $218.0K | 0.00% | −6,418−21.1% | Reduced |
| Northern Trust Corp | 24,673 | $224.0K | 0.00% | −1,432−5.5% | Reduced |
| Ensign Peak Advisors, Inc | 37,884 | $344.0K | 0.00% | 00.0% | Unchanged |
| Marshall Wace, LLP | 43,006 | $390.0K | 0.00% | +43,006 | New |
| Cubist Systematic Strategies, LLC | 51,327 | $466.0K | 0.01% | +51,327 | New |
| State Street Corp | 55,999 | $508.0K | 0.00% | +800+1.4% | Added |
| Boothbay Fund Management, LLC | 56,329 | $511.0K | 0.02% | +23,899+73.7% | Added |
| Susquehanna International Group, LLP | 81,781 | $743.0K | 0.00% | +70,942+654.5% | Added |
| Geode Capital Management, LLC | 130,282 | $1.18M | 0.00% | +20,521+18.7% | Added |
| Polaris Venture Management Co. V, L.L.C. | 130,572 | $1.19M | 8.42% | 00.0% | Unchanged |
| Jane Street Group, LLC | 136,901 | $1.24M | 0.00% | +136,901 | New |
| Virtu Financial LLC | 143,677 | $1.30M | 0.11% | +143,677 | New |
| EAM Global Investors LLC | 152,792 | $1.39M | 0.33% | +152,792 | New |
| Telemetry Investments, L.L.C. | 165,318 | $1.50M | 2.05% | −13,990−7.8% | Reduced |
| Renaissance Technologies LLC | 179,655 | $1.63M | 0.00% | +3,400+1.9% | Added |
| Citadel Advisors LLC | 200,415 | $1.82M | 0.00% | +170,542+570.9% | Added |
| BlackRock Inc. | 217,012 | $1.97M | 0.00% | −7,865−3.5% | Reduced |
| Dimensional Fund Advisors LP | 224,279 | $2.04M | 0.00% | +3,351+1.5% | Added |
| EAM Investors, LLC | 259,791 | $2.36M | 0.40% | +259,791 | New |
| Stonepine Capital Management, LLC | 410,535 | $3.73M | 1.70% | +410,535 | New |
| Two Sigma Advisers, LP | 482,450 | $4.38M | 0.01% | +362,500+302.2% | Added |
| Two Sigma Investments, LP | 541,721 | $4.92M | 0.01% | +527,275+3,650.0% | Added |
| Ikarian Capital, LLC | 562,246 | $5.11M | 1.17% | +262,246+87.4% | Added |
| Baker Bros. Advisors LP | 625,000 | $5.67M | 0.02% | +625,000 | New |
| Vanguard Group Inc | 906,741 | $8.23M | 0.00% | +311,539+52.3% | Added |
| Alyeska Investment Group, L.P. | 1,088,664 | $9.88M | 0.12% | −186,083−14.6% | Reduced |
| Tang Capital Management LLC | 1,113,453 | $10.1M | 2.10% | +1,113,453 | New |
| VR Adviser, LLC | 1,565,000 | $14.2M | 1.83% | +1,565,000 | New |
| FMR LLC | 4,063,293 | $36.9M | 0.00% | +2,387,413+142.5% | Added |
| Federated Hermes, Inc. | 5,222,250 | $47.4M | 0.09% | +3,607,250+223.4% | Added |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −42,724−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −12,265−100.0% | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −3,164−100.0% | Sold out |
| Royal Bank of Canada | 0 | $0 | 0.00% | −1−100.0% | Sold out |