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 |
|---|---|---|---|---|---|
| Caldwell Sutter Capital, Inc. | 52 | $41 | 0.00% | 00.0% | Unchanged |
| Caitong International Asset Management Co., Ltd | 67 | $52 | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 109 | $85 | 0.00% | +109 | New |
| Larson Financial Group LLC | 150 | $117 | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 161 | $126 | 0.00% | +161 | New |
| Essential Partners LLC | 175 | $137 | 0.00% | +175 | New |
| Natixis | 280 | $219 | 0.00% | +280 | New |
| MCF Advisors LLC | 400 | $314 | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 478 | $374 | 0.00% | −333−41.1% | Reduced |
| Sterling Capital Management LLC | 934 | $731 | 0.00% | +331+54.9% | 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 |
| Farther Finance Advisors, LLC | 2,225 | $1.74K | 0.00% | +125+6.0% | Added |
| Amalgamated Bank | 3,014 | $2.00K | 0.00% | +43+1.4% | Added |
| Citigroup Inc | 3,070 | $2.40K | 0.00% | −2,647−46.3% | Reduced |
| Newbridge Financial Services Group, Inc. | 3,600 | $2.82K | 0.00% | +3,100+620.0% | Added |
| FNY Investment Advisers, LLC | 4,800 | $3.00K | 0.00% | +4,100+585.7% | Added |
| California State Teachers Retirement System | 5,901 | $4.62K | 0.00% | +469+8.6% | Added |
| Royal Bank of Canada | 5,253 | $5.00K | 0.00% | −9,652−64.8% | Reduced |
| Russell Investments Group, Ltd. | 7,205 | $5.64K | 0.00% | −259−3.5% | Reduced |
| CWM, LLC | 7,978 | $6.00K | 0.00% | +7,959+41,889.5% | Added |
| Ameritas Investment Partners, Inc. | 8,881 | $6.96K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 9,570 | $7.49K | 0.00% | 00.0% | Unchanged |
| Belpointe Asset Management LLC | 10,438 | $8.17K | 0.00% | 00.0% | Unchanged |
| R Squared Ltd | 11,255 | $8.81K | 0.00% | +11,255 | New |
| Gladstone Institutional Advisory LLC | 11,300 | $8.85K | 0.00% | −2,000−15.0% | Reduced |
| Crossmark Global Holdings, Inc. | 12,666 | $9.92K | 0.00% | +12,666 | New |
| Apollon Wealth Management, LLC | 12,900 | $10.1K | 0.00% | −7,000−35.2% | Reduced |
| Tower Research Capital LLC (TRC) | 13,729 | $10.8K | 0.00% | −20,105−59.4% | Reduced |
| MAI Capital Management | 15,239 | $11.9K | 0.00% | −7,602−33.3% | Reduced |
| HSBC Holdings PLC | 16,136 | $12.1K | 0.00% | −30.0% | Reduced |
| Raymond James Financial Inc | 15,961 | $12.5K | 0.00% | +800+5.3% | Added |
| Voya Investment Management LLC | 16,594 | $13.0K | 0.00% | 00.0% | Unchanged |
| ProShare Advisors LLC | 17,524 | $13.7K | 0.00% | +2,651+17.8% | Added |
| RBF Capital, LLC | 20,000 | $15.7K | 0.00% | 00.0% | Unchanged |
| Neuberger Berman Group LLC | 20,454 | $16.0K | 0.00% | +20,454 | New |
| SG Americas Securities, LLC | 24,032 | $19.0K | 0.00% | +2,569+12.0% | Added |
| Police & Firemen's Retirement System of New Jersey | 26,081 | $20.4K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 26,227 | $20.5K | 0.00% | +26,227 | New |
| BNP Paribas Arbitrage, SA | 26,518 | $20.8K | 0.00% | +5,823+28.1% | Added |
| New York State Common Retirement Fund | 27,500 | $21.5K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 28,118 | $22.0K | 0.00% | 00.0% | Unchanged |
| LPL Financial LLC | 30,100 | $23.6K | 0.00% | +30,100 | New |
| Intech Investment Management LLC | 31,774 | $24.9K | 0.00% | 00.0% | Unchanged |
| SEI Investments Co | 33,829 | $26.5K | 0.00% | 00.0% | Unchanged |
| Two Sigma Securities, LLC | 39,006 | $30.5K | 0.00% | +39,006 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 41,844 | $32.8K | 0.00% | −7,678−15.5% | Reduced |
| Price T Rowe Associates Inc | 46,126 | $36.0K | 0.00% | 00.0% | Unchanged |
| Invesco Ltd. | 46,233 | $36.2K | 0.00% | +374+0.8% | Added |
| ADAR1 Capital Management, LLC | 50,685 | $39.7K | 0.00% | −124,315−71.0% | Reduced |
| Kingswood Wealth Advisors, LLC | 52,000 | $40.7K | 0.00% | +52,000 | New |
| Alliancebernstein L.P. | 64,480 | $50.5K | 0.00% | 00.0% | Unchanged |
| Virtu Financial LLC | 78,953 | $62.0K | 0.00% | +78,953 | New |
| XTX Topco Ltd | 79,365 | $62.2K | 0.00% | −233,045−74.6% | Reduced |
| Dimensional Fund Advisors LP | 97,497 | $76.2K | 0.00% | −117,049−54.6% | Reduced |
| Rhumbline Advisers | 99,762 | $78.1K | 0.00% | −22,645−18.5% | Reduced |
| JPMorgan Chase & Co | 110,373 | $86.4K | 0.00% | +4,556+4.3% | Added |
| Wells Fargo & Company | 116,717 | $91.4K | 0.00% | +5,658+5.1% | Added |
| Deutsche Bank AG | 120,341 | $93.9K | 0.00% | +117,239+3,779.5% | Added |
| Bank of America Corp | 126,700 | $99.2K | 0.00% | −50,971−28.7% | Reduced |
| Barclays PLC | 174,182 | $136.4K | 0.00% | −167,177−49.0% | Reduced |
| Victory Capital Management Inc | 181,966 | $142.5K | 0.00% | −10,847−5.6% | Reduced |
| Jane Street Group, LLC | 188,149 | $147.3K | 0.00% | −39,636−17.4% | Reduced |
| Group One Trading, L.P. | 191,048 | $149.6K | 0.00% | +173,808+1,008.2% | Added |
| Bank of New York Mellon Corp | 193,532 | $151.6K | 0.00% | −6,266−3.1% | Reduced |
| Charles Schwab Investment Management Inc | 221,767 | $173.7K | 0.00% | −39,276−15.0% | Reduced |
| Nuveen, LLC | 227,941 | $178.5K | 0.00% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 345,587 | $270.6K | 0.00% | −342,578−49.8% | Reduced |
| Two Sigma Investments, LP | 454,443 | $355.9K | 0.00% | +243,443+115.4% | Added |
| Tikvah Management LLC | 460,833 | $360.9K | 0.10% | 00.0% | Unchanged |
| Northern Trust Corp | 702,186 | $549.9K | 0.00% | +28,064+4.2% | Added |
| Susquehanna International Group, LLP | 764,743 | $598.9K | 0.00% | +638,071+503.7% | Added |
| AQR Capital Management LLC | 769,820 | $602.8K | 0.00% | +769,820 | New |
| Two Sigma Advisers, LP | 841,350 | $658.9K | 0.00% | +841,350 | New |
| Morgan Stanley | 1,403,009 | $1.10M | 0.00% | +692,668+97.5% | Added |
| UBS Group AG | 1,625,297 | $1.27M | 0.00% | −2,880,658−63.9% | Reduced |
| State Street Corp | 1,724,843 | $1.35M | 0.00% | −2,471,323−58.9% | Reduced |
| Geode Capital Management, LLC | 2,283,717 | $1.79M | 0.00% | +105,514+4.8% | Added |
| Gsa Capital Partners LLP | 2,630,638 | $2.06M | 0.18% | +1,923,907+272.2% | Added |
| Vanguard Group Inc | 4,961,871 | $3.89M | 0.00% | −669,064−11.9% | Reduced |
| BlackRock, Inc. | 6,549,699 | $5.13M | 0.00% | +75,815+1.2% | Added |
| Federated Hermes, Inc. | 10,509,678 | $8.23M | 0.01% | −34,759−0.3% | Reduced |
| FMR LLC | 14,697,995 | $11.5M | 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 |