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 2025
Institutional positions in aTYR PHARMA INC as of Dec 31, 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
- 84
- −18 vs. Q3 2025
- Shares held
- 54.8M
- −7.06M (−11.4%) vs. Q3 2025
- Total value
- $42.1M
- −$1.77M (−4.0%) vs. Q3 2025
- New holders
- 16
- 23 more added
- Sold out
- 34
- 25 more reduced
1 institution that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding aTYR PHARMA INC; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 14,697,995 | $11.5M | 0.00% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 10,509,678 | $8.23M | 0.01% | −34,759−0.3% | Reduced |
| BlackRock, Inc. | 6,549,699 | $5.13M | 0.00% | +75,815+1.2% | Added |
| Vanguard Group Inc | 4,961,871 | $3.89M | 0.00% | −669,064−11.9% | Reduced |
| Gsa Capital Partners LLP | 2,630,638 | $2.06M | 0.18% | +1,923,907+272.2% | Added |
| Geode Capital Management, LLC | 2,283,717 | $1.79M | 0.00% | +105,514+4.8% | Added |
| State Street Corp | 1,724,843 | $1.35M | 0.00% | −2,471,323−58.9% | Reduced |
| UBS Group AG | 1,625,297 | $1.27M | 0.00% | −2,880,658−63.9% | Reduced |
| Morgan Stanley | 1,403,009 | $1.10M | 0.00% | +692,668+97.5% | Added |
| Two Sigma Advisers, LP | 841,350 | $658.9K | 0.00% | +841,350 | New |
| AQR Capital Management LLC | 769,820 | $602.8K | 0.00% | +769,820 | New |
| Susquehanna International Group, LLP | 764,743 | $598.9K | 0.00% | +638,071+503.7% | Added |
| Northern Trust Corp | 702,186 | $549.9K | 0.00% | +28,064+4.2% | Added |
| Tikvah Management LLC | 460,833 | $360.9K | 0.10% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 454,443 | $355.9K | 0.00% | +243,443+115.4% | Added |
| Goldman Sachs Group Inc | 345,587 | $270.6K | 0.00% | −342,578−49.8% | Reduced |
| Nuveen, LLC | 227,941 | $178.5K | 0.00% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 221,767 | $173.7K | 0.00% | −39,276−15.0% | Reduced |
| Bank of New York Mellon Corp | 193,532 | $151.6K | 0.00% | −6,266−3.1% | Reduced |
| Group One Trading, L.P. | 191,048 | $149.6K | 0.00% | +173,808+1,008.2% | Added |
| Jane Street Group, LLC | 188,149 | $147.3K | 0.00% | −39,636−17.4% | Reduced |
| Victory Capital Management Inc | 181,966 | $142.5K | 0.00% | −10,847−5.6% | Reduced |
| Barclays PLC | 174,182 | $136.4K | 0.00% | −167,177−49.0% | Reduced |
| Bank of America Corp | 126,700 | $99.2K | 0.00% | −50,971−28.7% | Reduced |
| Deutsche Bank AG | 120,341 | $93.9K | 0.00% | +117,239+3,779.5% | Added |
| Wells Fargo & Company | 116,717 | $91.4K | 0.00% | +5,658+5.1% | Added |
| JPMorgan Chase & Co | 110,373 | $86.4K | 0.00% | +4,556+4.3% | Added |
| Rhumbline Advisers | 99,762 | $78.1K | 0.00% | −22,645−18.5% | Reduced |
| Dimensional Fund Advisors LP | 97,497 | $76.2K | 0.00% | −117,049−54.6% | Reduced |
| XTX Topco Ltd | 79,365 | $62.2K | 0.00% | −233,045−74.6% | Reduced |
| Virtu Financial LLC | 78,953 | $62.0K | 0.00% | +78,953 | New |
| Alliancebernstein L.P. | 64,480 | $50.5K | 0.00% | 00.0% | Unchanged |
| Kingswood Wealth Advisors, LLC | 52,000 | $40.7K | 0.00% | +52,000 | New |
| ADAR1 Capital Management, LLC | 50,685 | $39.7K | 0.00% | −124,315−71.0% | Reduced |
| Invesco Ltd. | 46,233 | $36.2K | 0.00% | +374+0.8% | Added |
| Price T Rowe Associates Inc | 46,126 | $36.0K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 41,844 | $32.8K | 0.00% | −7,678−15.5% | Reduced |
| Two Sigma Securities, LLC | 39,006 | $30.5K | 0.00% | +39,006 | New |
| SEI Investments Co | 33,829 | $26.5K | 0.00% | 00.0% | Unchanged |
| Intech Investment Management LLC | 31,774 | $24.9K | 0.00% | 00.0% | Unchanged |
| LPL Financial LLC | 30,100 | $23.6K | 0.00% | +30,100 | New |
| Rockefeller Capital Management L.P. | 28,118 | $22.0K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 27,500 | $21.5K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 26,518 | $20.8K | 0.00% | +5,823+28.1% | Added |
| Simplex Trading, LLC | 26,227 | $20.5K | 0.00% | +26,227 | New |
| Police & Firemen's Retirement System of New Jersey | 26,081 | $20.4K | 0.00% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 24,032 | $19.0K | 0.00% | +2,569+12.0% | Added |
| Neuberger Berman Group LLC | 20,454 | $16.0K | 0.00% | +20,454 | New |
| RBF Capital, LLC | 20,000 | $15.7K | 0.00% | 00.0% | Unchanged |
| ProShare Advisors LLC | 17,524 | $13.7K | 0.00% | +2,651+17.8% | Added |
| Voya Investment Management LLC | 16,594 | $13.0K | 0.00% | 00.0% | Unchanged |
| Raymond James Financial Inc | 15,961 | $12.5K | 0.00% | +800+5.3% | Added |
| HSBC Holdings PLC | 16,136 | $12.1K | 0.00% | −30.0% | Reduced |
| MAI Capital Management | 15,239 | $11.9K | 0.00% | −7,602−33.3% | Reduced |
| Tower Research Capital LLC (TRC) | 13,729 | $10.8K | 0.00% | −20,105−59.4% | Reduced |
| Apollon Wealth Management, LLC | 12,900 | $10.1K | 0.00% | −7,000−35.2% | Reduced |
| Crossmark Global Holdings, Inc. | 12,666 | $9.92K | 0.00% | +12,666 | New |
| Gladstone Institutional Advisory LLC | 11,300 | $8.85K | 0.00% | −2,000−15.0% | Reduced |
| R Squared Ltd | 11,255 | $8.81K | 0.00% | +11,255 | New |
| Belpointe Asset Management LLC | 10,438 | $8.17K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 9,570 | $7.49K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 8,881 | $6.96K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 7,978 | $6.00K | 0.00% | +7,959+41,889.5% | Added |
| Russell Investments Group, Ltd. | 7,205 | $5.64K | 0.00% | −259−3.5% | Reduced |
| Royal Bank of Canada | 5,253 | $5.00K | 0.00% | −9,652−64.8% | Reduced |
| California State Teachers Retirement System | 5,901 | $4.62K | 0.00% | +469+8.6% | Added |
| FNY Investment Advisers, LLC | 4,800 | $3.00K | 0.00% | +4,100+585.7% | Added |
| Newbridge Financial Services Group, Inc. | 3,600 | $2.82K | 0.00% | +3,100+620.0% | Added |
| Citigroup Inc | 3,070 | $2.40K | 0.00% | −2,647−46.3% | Reduced |
| Amalgamated Bank | 3,014 | $2.00K | 0.00% | +43+1.4% | Added |
| Farther Finance Advisors, LLC | 2,225 | $1.74K | 0.00% | +125+6.0% | Added |
| Jones Financial Companies LLLP | 1,500 | $1.18K | 0.00% | +1,500 | New |
| Vision Retirement, LLC | 1,500 | $1.18K | 0.00% | +1,500 | New |
| Sterling Capital Management LLC | 934 | $731 | 0.00% | +331+54.9% | Added |
| The PNC Financial Services Group, Inc. | 478 | $374 | 0.00% | −333−41.1% | Reduced |
| MCF Advisors LLC | 400 | $314 | 0.00% | 00.0% | Unchanged |
| Natixis | 280 | $219 | 0.00% | +280 | New |
| Essential Partners LLC | 175 | $137 | 0.00% | +175 | New |
| EverSource Wealth Advisors, LLC | 161 | $126 | 0.00% | +161 | New |
| Larson Financial Group LLC | 150 | $117 | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 109 | $85 | 0.00% | +109 | New |
| Caitong International Asset Management Co., Ltd | 67 | $52 | 0.00% | 00.0% | Unchanged |
| Caldwell Sutter Capital, Inc. | 52 | $41 | 0.00% | 00.0% | Unchanged |
| Rosalind Advisors, Inc. | 1,039,080 | – | – | 00.0% | Unchanged |
| Millennium Management LLC | 0 | $0 | 0.00% | −1,890,921−100.0% | Sold out |
| Tang Capital Management LLC | 0 | $0 | 0.00% | −671,134−100.0% | Sold out |
| State of Wisconsin Investment Board | 0 | $0 | 0.00% | −438,262−100.0% | Sold out |
| Ensign Peak Advisors, Inc | 0 | $0 | 0.00% | −414,732−100.0% | Sold out |
| Artia Global Partners LP | 0 | $0 | 0.00% | −372,276−100.0% | Sold out |
| Wellington Management Group LLP | 0 | $0 | 0.00% | −289,231−100.0% | Sold out |
| Flputnam Investment Management Co | 0 | $0 | 0.00% | −235,255−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −234,613−100.0% | Sold out |
| Rafferty Asset Management, LLC | 0 | $0 | 0.00% | −170,610−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −147,851−100.0% | Sold out |
| Main Street Financial Solutions, LLC | 0 | $0 | 0.00% | −144,950−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −124,924−100.0% | Sold out |
| Toronto Dominion Bank | 0 | $0 | 0.00% | −109,400−100.0% | Sold out |
| Woodline Partners LP | 0 | $0 | 0.00% | −102,687−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −83,312−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −45,830−100.0% | Sold out |