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, Q1 2026
Institutional positions in aTYR PHARMA INC as of Mar 31, 2026. 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
- 111
- +28 vs. Q4 2025
- Shares held
- 56.1M
- +6.19M (+12.4%) vs. Q4 2025
- Total value
- $43.7M
- +$5.49M (+14.4%) vs. Q4 2025
- New holders
- 36
- 27 more added
- Sold out
- 8
- 30 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding aTYR PHARMA INC; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 14,706,843 | $11.5M | 0.00% | +8,848+0.1% | Added |
| Federated Hermes, Inc. | 10,509,678 | $8.20M | 0.01% | 00.0% | Unchanged |
| BlackRock, Inc. | 6,443,904 | $5.03M | 0.00% | −105,795−1.6% | Reduced |
| UBS Group AG | 3,867,213 | $3.02M | 0.00% | +2,241,916+137.9% | Added |
| Vanguard Capital Management LLC | 3,812,132 | $2.97M | 0.00% | +3,812,132 | New |
| Geode Capital Management, LLC | 2,385,485 | $1.86M | 0.00% | +101,768+4.5% | Added |
| State Street Corp | 1,754,399 | $1.37M | 0.00% | +29,556+1.7% | Added |
| Gsa Capital Partners LLP | 1,684,586 | $1.31M | 0.08% | −946,052−36.0% | Reduced |
| Millennium Management LLC | 1,641,246 | $1.28M | 0.00% | +1,641,246 | New |
| Morgan Stanley | 1,225,467 | $955.9K | 0.00% | −177,542−12.7% | Reduced |
| Two Sigma Investments, LP | 1,144,565 | $892.8K | 0.00% | +690,122+151.9% | Added |
| Susquehanna International Group, LLP | 866,744 | $676.1K | 0.00% | +102,001+13.3% | Added |
| Northern Trust Corp | 711,105 | $554.7K | 0.00% | +8,919+1.3% | Added |
| Vanguard Fiduciary Trust Co | 651,832 | $508.4K | 0.00% | +651,832 | New |
| Vanguard Portfolio Management LLC | 569,227 | $444.0K | 0.00% | +569,227 | New |
| AQR Capital Management LLC | 496,018 | $386.9K | 0.00% | −273,802−35.6% | Reduced |
| Bank of America Corp | 303,559 | $236.8K | 0.00% | +176,859+139.6% | Added |
| Goldman Sachs Group Inc | 283,236 | $220.9K | 0.00% | −62,351−18.0% | Reduced |
| Nuveen, LLC | 229,284 | $178.8K | 0.00% | +1,343+0.6% | Added |
| Charles Schwab Investment Management Inc | 210,737 | $164.4K | 0.00% | −11,030−5.0% | Reduced |
| Bank of New York Mellon Corp | 193,531 | $151.0K | 0.00% | −10.0% | Reduced |
| Group One Trading, L.P. | 184,014 | $143.5K | 0.00% | −7,034−3.7% | Reduced |
| Marshall Wace, LLP | 138,118 | $107.7K | 0.00% | +138,118 | New |
| XTX Topco Ltd | 111,423 | $86.9K | 0.00% | +32,058+40.4% | Added |
| Deutsche Bank AG | 103,326 | $80.6K | 0.00% | −17,015−14.1% | Reduced |
| Rhumbline Advisers | 103,146 | $80.4K | 0.00% | +3,384+3.4% | Added |
| Hohimer Wealth Management, LLC | 100,000 | $78.0K | 0.01% | +100,000 | New |
| Dimensional Fund Advisors LP | 91,871 | $71.5K | 0.00% | −5,626−5.8% | Reduced |
| Victory Capital Management Inc | 88,436 | $69.0K | 0.00% | −93,530−51.4% | Reduced |
| Alliancebernstein L.P. | 64,480 | $50.5K | 0.00% | 00.0% | Unchanged |
| Kingswood Wealth Advisors, LLC | 52,000 | $40.6K | 0.00% | 00.0% | Unchanged |
| ADAR1 Capital Management, LLC | 50,685 | $39.5K | 0.00% | 00.0% | Unchanged |
| Redhawk Wealth Advisors, Inc. | 49,150 | $38.3K | 0.00% | +49,150 | New |
| Jane Street Group, LLC | 48,502 | $37.8K | 0.00% | −139,647−74.2% | Reduced |
| Citadel Advisors LLC | 47,372 | $37.0K | 0.00% | +47,372 | New |
| Wells Fargo & Company | 46,540 | $36.3K | 0.00% | −70,177−60.1% | Reduced |
| Invesco Ltd. | 46,354 | $36.2K | 0.00% | +121+0.3% | Added |
| Price T Rowe Associates Inc | 46,126 | $36.0K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 46,073 | $35.9K | 0.00% | +4,229+10.1% | Added |
| Belpointe Asset Management LLC | 45,738 | $35.7K | 0.00% | +35,300+338.2% | Added |
| Barclays PLC | 45,123 | $35.2K | 0.00% | −129,059−74.1% | Reduced |
| Renaissance Technologies LLC | 40,522 | $31.6K | 0.00% | +40,522 | New |
| Virtu Financial LLC | 40,048 | $31.0K | 0.00% | −38,905−49.3% | Reduced |
| JPMorgan Chase & Co | 41,987 | $30.7K | 0.00% | −68,386−62.0% | Reduced |
| CWM, LLC | 36,010 | $28.1K | 0.00% | +28,032+351.4% | Added |
| LPL Financial LLC | 35,549 | $27.7K | 0.00% | +5,449+18.1% | Added |
| SEI Investments Co | 33,829 | $26.4K | 0.00% | 00.0% | Unchanged |
| Vanguard Global Advisers, LLC | 33,414 | $26.1K | 0.00% | +33,414 | New |
| Rockefeller Capital Management L.P. | 28,118 | $21.9K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 27,500 | $21.4K | 0.00% | 00.0% | Unchanged |
| Intech Investment Management LLC | 26,187 | $20.4K | 0.00% | −5,587−17.6% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 26,081 | $20.3K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 25,278 | $19.7K | 0.00% | −1,240−4.7% | Reduced |
| Neuberger Berman Group LLC | 21,743 | $17.0K | 0.00% | +1,289+6.3% | Added |
| RBF Capital, LLC | 20,000 | $15.6K | 0.00% | 00.0% | Unchanged |
| Hobbs Group Advisors, LLC | 19,419 | $15.1K | 0.00% | +19,419 | New |
| HSBC Holdings PLC | 18,214 | $13.9K | 0.00% | +2,078+12.9% | Added |
| Tower Research Capital LLC (TRC) | 17,426 | $13.6K | 0.00% | +3,697+26.9% | Added |
| Wealth Enhancement Advisory Services, LLC | 15,578 | $13.2K | 0.00% | +15,578 | New |
| JustInvest LLC | 16,669 | $13.0K | 0.00% | +16,669 | New |
| Close Asset Management Ltd | 16,200 | $13.0K | 0.00% | +16,200 | New |
| Trust Co of Toledo NA | 16,640 | $13.0K | 0.00% | +16,640 | New |
| Raymond James Financial Inc | 16,601 | $12.9K | 0.00% | +640+4.0% | Added |
| Steward Partners Investment Advisory, LLC | 16,600 | $12.9K | 0.00% | +16,600 | New |
| Captrust Financial Advisors | 15,982 | $12.5K | 0.00% | +15,982 | New |
| Mercer Global Advisors Inc | 15,205 | $11.9K | 0.00% | +15,205 | New |
| Prudential Financial Inc | 14,660 | $11.4K | 0.00% | +14,660 | New |
| ProShare Advisors LLC | 13,905 | $10.8K | 0.00% | −3,619−20.7% | Reduced |
| MAI Capital Management | 13,504 | $10.5K | 0.00% | −1,735−11.4% | Reduced |
| Crossmark Global Holdings, Inc. | 12,666 | $9.88K | 0.00% | 00.0% | Unchanged |
| Pasadena Private Wealth, LLC | 12,228 | $9.54K | 0.00% | +12,228 | New |
| Apollon Wealth Management, LLC | 11,900 | $9.28K | 0.00% | −1,000−7.8% | Reduced |
| Royal Bank of Canada | 11,146 | $9.00K | 0.00% | +5,893+112.2% | Added |
| Russell Investments Group, Ltd. | 11,361 | $8.86K | 0.00% | +4,156+57.7% | Added |
| Gladstone Institutional Advisory LLC | 11,300 | $8.81K | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 10,552 | $8.23K | 0.00% | +10,552 | New |
| Creative Planning | 10,508 | $8.20K | 0.00% | +10,508 | New |
| Voya Investment Management LLC | 10,338 | $8.06K | 0.00% | −6,256−37.7% | Reduced |
| Balyasny Asset Management LLC | 10,330 | $8.06K | 0.00% | +10,330 | New |
| Ameritas Investment Partners, Inc. | 8,881 | $6.93K | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 8,196 | $6.39K | 0.00% | +7,718+1,614.6% | Added |
| Legal & General Group Plc | 7,920 | $6.18K | 0.00% | −1,650−17.2% | Reduced |
| GAMMA Investing LLC | 7,739 | $6.04K | 0.00% | +7,739 | New |
| My Portfolio Guide, LLC | 7,000 | $5.46K | 0.00% | +7,000 | New |
| IFP Advisors, Inc | 6,001 | $4.68K | 0.00% | +6,001 | New |
| Citigroup Inc | 5,891 | $4.59K | 0.00% | +2,821+91.9% | Added |
| California State Teachers Retirement System | 5,190 | $4.05K | 0.00% | −711−12.0% | Reduced |
| Advisor Group Holdings, Inc. | 5,000 | $3.90K | 0.00% | +5,000 | New |
| Ares Financial Consulting, LLC | 2,000 | $1.70K | 0.00% | +2,000 | New |
| Newbridge Financial Services Group, Inc. | 2,079 | $1.62K | 0.00% | −1,521−42.3% | Reduced |
| UBS Asset Management Americas Inc | 2,011 | $1.57K | 0.00% | +2,011 | New |
| Essential Partners LLC | 1,618 | $1.26K | 0.00% | +1,443+824.6% | Added |
| Vision Retirement, LLC | 1,500 | $1.17K | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 1,500 | $1.13K | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 1,320 | $1.12K | 0.00% | −905−40.7% | Reduced |
| Toth Financial Advisory Corp | 1,400 | $1.09K | 0.00% | +1,400 | New |
| Simplex Trading, LLC | 1,335 | $1.04K | 0.00% | −24,892−94.9% | Reduced |
| FNY Investment Advisers, LLC | 1,500 | $1.00K | 0.00% | −3,300−68.8% | Reduced |
| Nisa Investment Advisors, LLC | 974 | $760 | 0.00% | +974 | New |
| Sterling Capital Management LLC | 742 | $579 | 0.00% | −192−20.6% | Reduced |