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 2021
Institutional positions in aTYR PHARMA INC as of Dec 31, 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
- 47
- +6 vs. Q3 2021
- Shares held
- 20.6M
- +1.73M (+9.2%) vs. Q3 2021
- Total value
- $153.5M
- −$17.4M (−10.2%) vs. Q3 2021
- New holders
- 17
- 10 more added
- Sold out
- 11
- 12 more reduced
1 institution that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2021
Shares, value and share of portfolio for each institution holding aTYR PHARMA INC; share changes are against Q3 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Federated Hermes, Inc. | 5,222,250 | $39.0M | 0.07% | 00.0% | Unchanged |
| FMR LLC | 4,168,601 | $31.1M | 0.00% | +105,308+2.6% | Added |
| VR Adviser, LLC | 1,565,000 | $11.7M | 1.60% | 00.0% | Unchanged |
| Tikvah Management LLC | 1,225,833 | $9.16M | 2.55% | +1,225,833 | New |
| Tang Capital Management LLC | 1,113,453 | $8.32M | 1.67% | 00.0% | Unchanged |
| Vanguard Group Inc | 1,113,191 | $8.31M | 0.00% | +206,450+22.8% | Added |
| Deep Track Capital, LP | 1,100,000 | $8.22M | 0.61% | +1,100,000 | New |
| Alyeska Investment Group, L.P. | 674,975 | $5.04M | 0.06% | −413,689−38.0% | Reduced |
| Baker Bros. Advisors LP | 625,000 | $4.67M | 0.02% | 00.0% | Unchanged |
| Stonepine Capital Management, LLC | 525,531 | $3.93M | 1.80% | +114,996+28.0% | Added |
| Two Sigma Investments, LP | 486,993 | $3.64M | 0.01% | −54,728−10.1% | Reduced |
| Two Sigma Advisers, LP | 387,352 | $2.89M | 0.01% | −95,098−19.7% | Reduced |
| BlackRock Inc. | 275,379 | $2.06M | 0.00% | +58,367+26.9% | Added |
| EAM Investors, LLC | 252,280 | $1.89M | 0.31% | −7,511−2.9% | Reduced |
| Marshall Wace, LLP | 250,396 | $1.87M | 0.00% | +207,390+482.2% | Added |
| Geode Capital Management, LLC | 231,499 | $1.73M | 0.00% | +101,217+77.7% | Added |
| Dimensional Fund Advisors LP | 226,712 | $1.69M | 0.00% | +2,433+1.1% | Added |
| Citadel Advisors LLC | 193,494 | $1.45M | 0.00% | −6,921−3.5% | Reduced |
| Telemetry Investments, L.L.C. | 176,782 | $1.32M | 1.73% | +11,464+6.9% | Added |
| EAM Global Investors LLC | 152,792 | $1.14M | 0.20% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 127,155 | $950.0K | 0.00% | −52,500−29.2% | Reduced |
| Gsa Capital Partners LLP | 58,791 | $439.0K | 0.06% | +58,791 | New |
| State Street Corp | 55,999 | $418.0K | 0.00% | 00.0% | Unchanged |
| Northern Trust Corp | 44,406 | $332.0K | 0.00% | +19,733+80.0% | Added |
| Ensign Peak Advisors, Inc | 37,884 | $283.0K | 0.00% | 00.0% | Unchanged |
| Ikarian Capital, LLC | 35,048 | $262.0K | 0.07% | −527,198−93.8% | Reduced |
| Raymond James & Associates | 24,584 | $184.0K | 0.00% | +24,584 | New |
| Nan Fung Group Holdings Ltd | 23,500 | $176.0K | 0.05% | +23,500 | New |
| Morgan Stanley | 20,465 | $153.0K | 0.00% | +20,465 | New |
| Millennium Management LLC | 19,656 | $147.0K | 0.00% | −4,312−18.0% | Reduced |
| Goldman Sachs Group Inc | 18,512 | $138.0K | 0.00% | +18,512 | New |
| Trexquant Investment LP | 18,106 | $135.0K | 0.01% | +18,106 | New |
| Cubist Systematic Strategies, LLC | 16,900 | $126.0K | 0.00% | −34,427−67.1% | Reduced |
| Ameriprise Financial Inc | 16,700 | $125.0K | 0.00% | +16,700 | New |
| Jump Financial, LLC | 16,100 | $120.0K | 0.01% | +16,100 | New |
| Blueshift Asset Management, LLC | 12,729 | $95.0K | 0.01% | +12,729 | New |
| Tocqueville Asset Management L.P. | 12,150 | $91.0K | 0.00% | −2,700−18.2% | Reduced |
| Qube Research & Technologies Ltd | 11,665 | $87.0K | 0.00% | +11,665 | New |
| Charles Schwab Investment Management Inc | 10,000 | $75.0K | 0.00% | +10,000 | New |
| Cutler Group LP | 2,843 | $21.0K | 0.00% | −12,681−81.7% | Reduced |
| Wells Fargo & Company | 1,659 | $12.0K | 0.00% | +71+4.5% | Added |
| UBS Group AG | 1,132 | $8.00K | 0.00% | +1,132 | New |
| Royal Bank of Canada | 500 | $4.00K | 0.00% | +500 | New |
| PFS Partners, LLC | 406 | $3.03K | 0.00% | +406 | New |
| RE Dickinson Investment Advisors, LLC | 300 | $2.00K | 0.00% | +300 | New |
| Charter Oak Capital Management, LLC | 150 | $1.00K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 25 | $0 | 0.00% | −656−96.3% | Reduced |
| Virtu Financial LLC | 0 | $0 | 0.00% | −143,677−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −136,901−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −81,781−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −56,329−100.0% | Sold out |
| Price T Rowe Associates Inc | 0 | $0 | 0.00% | −12,024−100.0% | Sold out |
| Sheaff Brock Investment Advisors, LLC | 0 | $0 | 0.00% | −11,000−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −2,022−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −382−100.0% | Sold out |
| Carmichael Hill & Associates, Inc. | 0 | $0 | 0.00% | −300−100.0% | Sold out |
| Ironwood Financial, llc | 0 | $0 | 0.00% | −50−100.0% | Sold out |
| Advisor Group Holdings, Inc. | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Polaris Venture Management Co. V, L.L.C. | – | – | – | – | Not filed |