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 |
|---|---|---|---|---|---|
| Tower Research Capital LLC (TRC) | 25 | $0 | 0.00% | −656−96.3% | Reduced |
| Charter Oak Capital Management, LLC | 150 | $1.00K | 0.00% | 00.0% | Unchanged |
| RE Dickinson Investment Advisors, LLC | 300 | $2.00K | 0.00% | +300 | New |
| PFS Partners, LLC | 406 | $3.03K | 0.00% | +406 | New |
| Royal Bank of Canada | 500 | $4.00K | 0.00% | +500 | New |
| UBS Group AG | 1,132 | $8.00K | 0.00% | +1,132 | New |
| Wells Fargo & Company | 1,659 | $12.0K | 0.00% | +71+4.5% | Added |
| Cutler Group LP | 2,843 | $21.0K | 0.00% | −12,681−81.7% | Reduced |
| Charles Schwab Investment Management Inc | 10,000 | $75.0K | 0.00% | +10,000 | New |
| Qube Research & Technologies Ltd | 11,665 | $87.0K | 0.00% | +11,665 | New |
| Tocqueville Asset Management L.P. | 12,150 | $91.0K | 0.00% | −2,700−18.2% | Reduced |
| Blueshift Asset Management, LLC | 12,729 | $95.0K | 0.01% | +12,729 | New |
| Jump Financial, LLC | 16,100 | $120.0K | 0.01% | +16,100 | New |
| Ameriprise Financial Inc | 16,700 | $125.0K | 0.00% | +16,700 | New |
| Cubist Systematic Strategies, LLC | 16,900 | $126.0K | 0.00% | −34,427−67.1% | Reduced |
| Trexquant Investment LP | 18,106 | $135.0K | 0.01% | +18,106 | New |
| Goldman Sachs Group Inc | 18,512 | $138.0K | 0.00% | +18,512 | New |
| Millennium Management LLC | 19,656 | $147.0K | 0.00% | −4,312−18.0% | Reduced |
| Morgan Stanley | 20,465 | $153.0K | 0.00% | +20,465 | New |
| Nan Fung Group Holdings Ltd | 23,500 | $176.0K | 0.05% | +23,500 | New |
| Raymond James & Associates | 24,584 | $184.0K | 0.00% | +24,584 | New |
| Ikarian Capital, LLC | 35,048 | $262.0K | 0.07% | −527,198−93.8% | Reduced |
| Ensign Peak Advisors, Inc | 37,884 | $283.0K | 0.00% | 00.0% | Unchanged |
| Northern Trust Corp | 44,406 | $332.0K | 0.00% | +19,733+80.0% | Added |
| State Street Corp | 55,999 | $418.0K | 0.00% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 58,791 | $439.0K | 0.06% | +58,791 | New |
| Renaissance Technologies LLC | 127,155 | $950.0K | 0.00% | −52,500−29.2% | Reduced |
| EAM Global Investors LLC | 152,792 | $1.14M | 0.20% | 00.0% | Unchanged |
| Telemetry Investments, L.L.C. | 176,782 | $1.32M | 1.73% | +11,464+6.9% | Added |
| Citadel Advisors LLC | 193,494 | $1.45M | 0.00% | −6,921−3.5% | Reduced |
| Dimensional Fund Advisors LP | 226,712 | $1.69M | 0.00% | +2,433+1.1% | Added |
| Geode Capital Management, LLC | 231,499 | $1.73M | 0.00% | +101,217+77.7% | Added |
| Marshall Wace, LLP | 250,396 | $1.87M | 0.00% | +207,390+482.2% | Added |
| EAM Investors, LLC | 252,280 | $1.89M | 0.31% | −7,511−2.9% | Reduced |
| BlackRock Inc. | 275,379 | $2.06M | 0.00% | +58,367+26.9% | Added |
| Two Sigma Advisers, LP | 387,352 | $2.89M | 0.01% | −95,098−19.7% | Reduced |
| Two Sigma Investments, LP | 486,993 | $3.64M | 0.01% | −54,728−10.1% | Reduced |
| Stonepine Capital Management, LLC | 525,531 | $3.93M | 1.80% | +114,996+28.0% | Added |
| Baker Bros. Advisors LP | 625,000 | $4.67M | 0.02% | 00.0% | Unchanged |
| Alyeska Investment Group, L.P. | 674,975 | $5.04M | 0.06% | −413,689−38.0% | Reduced |
| Deep Track Capital, LP | 1,100,000 | $8.22M | 0.61% | +1,100,000 | New |
| Vanguard Group Inc | 1,113,191 | $8.31M | 0.00% | +206,450+22.8% | Added |
| Tang Capital Management LLC | 1,113,453 | $8.32M | 1.67% | 00.0% | Unchanged |
| Tikvah Management LLC | 1,225,833 | $9.16M | 2.55% | +1,225,833 | New |
| VR Adviser, LLC | 1,565,000 | $11.7M | 1.60% | 00.0% | Unchanged |
| FMR LLC | 4,168,601 | $31.1M | 0.00% | +105,308+2.6% | Added |
| Federated Hermes, Inc. | 5,222,250 | $39.0M | 0.07% | 00.0% | Unchanged |
| 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 |