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 2025
Institutional positions in aTYR PHARMA INC as of Sep 30, 2025. 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
- 103
- −5 vs. Q2 2025
- Shares held
- 61.9M
- −4.35M (−6.6%) vs. Q2 2025
- Total value
- $43.9M
- −$292.2M (−86.9%) vs. Q2 2025
- New holders
- 34
- 33 more added
- Sold out
- 39
- 25 more reduced
2 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: 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 2025
Shares, value and share of portfolio for each institution holding aTYR PHARMA INC; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 14,697,995 | $10.6M | 0.00% | +1,347,330+10.1% | Added |
| Federated Hermes, Inc. | 10,544,437 | $7.61M | 0.01% | −4,122,163−28.1% | Reduced |
| BlackRock, Inc. | 6,473,884 | $4.67M | 0.00% | +691,251+12.0% | Added |
| Vanguard Group Inc | 5,630,935 | $4.06M | 0.00% | +975,887+21.0% | Added |
| UBS Group AG | 4,505,955 | $3.25M | 0.00% | +2,760,238+158.1% | Added |
| State Street Corp | 4,196,166 | $3.03M | 0.00% | +2,956,503+238.5% | Added |
| Geode Capital Management, LLC | 2,178,203 | $1.57M | 0.00% | +80,127+3.8% | Added |
| Millennium Management LLC | 1,890,921 | $1.36M | 0.00% | +290,721+18.2% | Added |
| Morgan Stanley | 710,341 | $512.4K | 0.00% | +450,375+173.2% | Added |
| Gsa Capital Partners LLP | 706,731 | $510.0K | 0.04% | +210,442+42.4% | Added |
| Goldman Sachs Group Inc | 688,165 | $496.4K | 0.00% | +651,890+1,797.1% | Added |
| Northern Trust Corp | 674,122 | $486.3K | 0.00% | −6,814−1.0% | Reduced |
| Tang Capital Management LLC | 671,134 | $484.2K | 0.02% | 00.0% | Unchanged |
| Tikvah Management LLC | 460,833 | $332.4K | 0.10% | −2,000,000−81.3% | Reduced |
| State of Wisconsin Investment Board | 438,262 | $316.2K | 0.00% | +438,262 | New |
| Ensign Peak Advisors, Inc | 414,732 | $299.2K | 0.00% | +179,057+76.0% | Added |
| Artia Global Partners LP | 372,276 | $268.6K | 0.05% | +372,276 | New |
| Barclays PLC | 341,359 | $246.3K | 0.00% | +44,773+15.1% | Added |
| XTX Topco Ltd | 312,410 | $225.4K | 0.01% | +312,410 | New |
| Wellington Management Group LLP | 289,231 | $208.7K | 0.00% | +74,303+34.6% | Added |
| Charles Schwab Investment Management Inc | 261,043 | $188.3K | 0.00% | +2,492+1.0% | Added |
| Flputnam Investment Management Co | 235,255 | $169.7K | 0.00% | +193,697+466.1% | Added |
| Brevan Howard Capital Management LP | 234,613 | $168.9K | 0.00% | +234,613 | New |
| Nuveen, LLC | 227,941 | $164.4K | 0.00% | +33,829+17.4% | Added |
| Jane Street Group, LLC | 227,785 | $164.3K | 0.00% | +191,362+525.4% | Added |
| Dimensional Fund Advisors LP | 214,546 | $155.0K | 0.00% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 211,000 | $152.2K | 0.00% | +179,672+573.5% | Added |
| Bank of New York Mellon Corp | 199,798 | $144.1K | 0.00% | +13,904+7.5% | Added |
| Victory Capital Management Inc | 192,813 | $139.1K | 0.00% | +182,551+1,778.9% | Added |
| Bank of America Corp | 177,671 | $128.1K | 0.00% | +135,325+319.6% | Added |
| ADAR1 Capital Management, LLC | 175,000 | $126.2K | 0.01% | +175,000 | New |
| Rafferty Asset Management, LLC | 170,610 | $123.1K | 0.00% | +170,610 | New |
| Graham Capital Management, L.P. | 147,851 | $106.7K | 0.00% | +147,851 | New |
| Main Street Financial Solutions, LLC | 144,950 | $104.6K | 0.01% | +1,350+0.9% | Added |
| Susquehanna International Group, LLP | 126,672 | $91.4K | 0.00% | −127,346−50.1% | Reduced |
| Squarepoint Ops LLC | 124,924 | $90.1K | 0.00% | +124,924 | New |
| Rhumbline Advisers | 122,407 | $88.2K | 0.00% | −1,751−1.4% | Reduced |
| Wells Fargo & Company | 111,059 | $80.1K | 0.00% | −166,329−60.0% | Reduced |
| Toronto Dominion Bank | 109,400 | $78.9K | 0.00% | +109,400 | New |
| JPMorgan Chase & Co | 105,817 | $76.3K | 0.00% | +64,710+157.4% | Added |
| Woodline Partners LP | 102,687 | $74.1K | 0.00% | −1,578,908−93.9% | Reduced |
| D. E. Shaw & Co., Inc. | 83,312 | $60.1K | 0.00% | +68,026+445.0% | Added |
| Alliancebernstein L.P. | 64,480 | $46.5K | 0.00% | 00.0% | Unchanged |
| Wolverine Trading, LLC | 54,026 | $43.0K | 0.00% | +54,026 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 49,522 | $36.4K | 0.00% | +1,879+3.9% | Added |
| Price T Rowe Associates Inc | 46,126 | $34.0K | 0.00% | +2,601+6.0% | Added |
| Invesco Ltd. | 45,859 | $33.1K | 0.00% | −552,149−92.3% | Reduced |
| Los Angeles Capital Management LLC | 45,830 | $33.1K | 0.00% | +45,830 | New |
| DLD Asset Management, LP | 40,000 | $28.9K | 0.00% | +40,000 | New |
| Profund Advisors LLC | 36,785 | $26.5K | 0.00% | +36,785 | New |
| Tower Research Capital LLC (TRC) | 33,834 | $24.4K | 0.00% | +23,493+227.2% | Added |
| SEI Investments Co | 33,829 | $24.4K | 0.00% | +33,829 | New |
| Intech Investment Management LLC | 31,774 | $22.9K | 0.00% | −12,894−28.9% | Reduced |
| Rockefeller Capital Management L.P. | 28,118 | $20.3K | 0.00% | +28,118 | New |
| New York State Common Retirement Fund | 27,500 | $19.8K | 0.00% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 26,081 | $18.8K | 0.00% | +6,225+31.4% | Added |
| Courier Capital LLC | 25,000 | $18.0K | 0.00% | +25,000 | New |
| MAI Capital Management | 22,841 | $16.5K | 0.00% | −346,286−93.8% | Reduced |
| Leonteq Securities AG | 21,146 | $15.3K | 0.00% | +18,646+745.8% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 20,994 | $15.1K | 0.00% | +20,994 | New |
| SG Americas Securities, LLC | 21,463 | $15.0K | 0.00% | +21,463 | New |
| BNP Paribas Arbitrage, SA | 20,695 | $14.9K | 0.00% | +1,145+5.9% | Added |
| RBF Capital, LLC | 20,000 | $14.4K | 0.00% | +20,000 | New |
| Apollon Wealth Management, LLC | 19,900 | $14.4K | 0.00% | −600−2.9% | Reduced |
| Hobbs Group Advisors, LLC | 18,653 | $13.5K | 0.00% | +18,653 | New |
| Group One Trading, L.P. | 17,240 | $12.4K | 0.00% | −53,527−75.6% | Reduced |
| Blue Rock Wealth Management LLC | 17,000 | $12.3K | 0.01% | −3,000−15.0% | Reduced |
| North Star Asset Management Inc | 16,800 | $12.1K | 0.00% | 00.0% | Unchanged |
| Voya Investment Management LLC | 16,594 | $12.0K | 0.00% | −8,018−32.6% | Reduced |
| HSBC Holdings PLC | 16,139 | $11.8K | 0.00% | −8,445−34.4% | Reduced |
| Royal Bank of Canada | 14,905 | $11.0K | 0.00% | −81,263−84.5% | Reduced |
| Raymond James Financial Inc | 15,161 | $10.9K | 0.00% | −9,678−39.0% | Reduced |
| ProShare Advisors LLC | 14,873 | $10.7K | 0.00% | −2,964−16.6% | Reduced |
| Atom Investors LP | 13,547 | $9.77K | 0.00% | −8,243−37.8% | Reduced |
| Gladstone Institutional Advisory LLC | 13,300 | $9.60K | 0.00% | +2,500+23.1% | Added |
| United Bank | 11,970 | $8.64K | 0.00% | −4,860−28.9% | Reduced |
| Prudential Financial Inc | 10,890 | $7.84K | 0.00% | −1,500−12.1% | Reduced |
| Belpointe Asset Management LLC | 10,438 | $7.53K | 0.00% | +10,438 | New |
| Legal & General Group Plc | 9,570 | $6.90K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 8,881 | $6.41K | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 7,464 | $5.38K | 0.00% | +7,464 | New |
| Citigroup Inc | 5,717 | $4.12K | 0.00% | −27,616−82.8% | Reduced |
| California State Teachers Retirement System | 5,432 | $3.92K | 0.00% | +4+0.1% | Added |
| Deutsche Bank AG | 3,102 | $2.23K | 0.00% | −57,194−94.9% | Reduced |
| Amalgamated Bank | 2,971 | $2.00K | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 2,100 | $1.51K | 0.00% | −17,823−89.5% | Reduced |
| Signaturefd, LLC | 1,809 | $1.30K | 0.00% | +1,809 | New |
| The PNC Financial Services Group, Inc. | 811 | $585 | 0.00% | +811 | New |
| Sterling Capital Management LLC | 603 | $435 | 0.00% | +248+69.9% | Added |
| Newbridge Financial Services Group, Inc. | 500 | $361 | 0.00% | 00.0% | Unchanged |
| Quadrant Capital Group LLC | 462 | $334 | 0.00% | +462 | New |
| MCF Advisors LLC | 400 | $289 | 0.00% | +400 | New |
| US Bancorp | 316 | $228 | 0.00% | +316 | New |
| Global Retirement Partners, LLC | 300 | $216 | 0.00% | 00.0% | Unchanged |
| Larson Financial Group LLC | 150 | $108 | 0.00% | +150 | New |
| Advisory Services Network, LLC | 91 | $66 | 0.00% | +91 | New |
| Caitong International Asset Management Co., Ltd | 67 | $48 | 0.00% | −1,853−96.5% | Reduced |
| Financial Consulate, Inc | 55 | $40 | 0.00% | +55 | New |
| Caldwell Sutter Capital, Inc. | 52 | $38 | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 19 | $0 | 0.00% | +19 | New |