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 2025
Institutional positions in aTYR PHARMA INC as of Mar 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
- 87
- +10 vs. Q4 2024
- Shares held
- 61.8M
- +6.89M (+12.6%) vs. Q4 2024
- Total value
- $186.5M
- −$12.1M (−6.1%) vs. Q4 2024
- New holders
- 26
- 36 more added
- Sold out
- 16
- 14 more reduced
Compare with Q4 2024: 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 2025
Shares, value and share of portfolio for each institution holding aTYR PHARMA INC; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Federated Hermes, Inc. | 14,666,600 | $44.3M | 0.10% | 00.0% | Unchanged |
| FMR LLC | 12,893,529 | $38.9M | 0.00% | +796,100+6.6% | Added |
| Vanguard Group Inc | 4,006,735 | $12.1M | 0.00% | +401,808+11.1% | Added |
| Octagon Capital Advisors LP | 3,552,000 | $10.7M | 2.33% | +2,652,000+294.7% | Added |
| Point72 Asset Management, L.P. | 2,844,099 | $8.59M | 0.02% | −2,039,098−41.8% | Reduced |
| Tikvah Management LLC | 2,460,833 | $7.43M | 2.53% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 1,733,081 | $5.23M | 0.01% | +945,239+120.0% | Added |
| Woodline Partners LP | 1,681,595 | $5.08M | 0.03% | −1,405−0.1% | Reduced |
| UBS Group AG | 1,637,186 | $4.94M | 0.00% | +1,407,610+613.1% | Added |
| Millennium Management LLC | 1,599,041 | $4.83M | 0.00% | +1,231,052+334.5% | Added |
| BlackRock, Inc. | 1,593,981 | $4.81M | 0.00% | +68,868+4.5% | Added |
| Alyeska Investment Group, L.P. | 1,277,897 | $3.86M | 0.02% | −5440.0% | Reduced |
| Geode Capital Management, LLC | 927,800 | $2.80M | 0.00% | +36,393+4.1% | Added |
| Marshall Wace, LLP | 838,452 | $2.53M | 0.00% | +838,452 | New |
| Ally Bridge Group (NY) LLC | 777,020 | $2.35M | 2.12% | +77,290+11.0% | Added |
| Integral Health Asset Management, LLC | 700,000 | $2.11M | 0.23% | +325,000+86.7% | Added |
| Tang Capital Management LLC | 671,134 | $2.03M | 0.11% | 00.0% | Unchanged |
| MAI Capital Management | 658,330 | $1.99M | 0.02% | +658,115+306,100.0% | Added |
| Erste Asset Management GmbH | 600,000 | $1.81M | 0.02% | +600,000 | New |
| Renaissance Technologies LLC | 479,955 | $1.45M | 0.00% | −94,500−16.5% | Reduced |
| Qube Research & Technologies Ltd | 414,592 | $1.25M | 0.00% | −15,432−3.6% | Reduced |
| Goldman Sachs Group Inc | 382,317 | $1.15M | 0.00% | +120,496+46.0% | Added |
| State Street Corp | 367,310 | $1.11M | 0.00% | +66,800+22.2% | Added |
| Gsa Capital Partners LLP | 332,324 | $1.00M | 0.09% | +57,898+21.1% | Added |
| Bank of America Corp | 288,311 | $870.7K | 0.00% | +197,087+216.0% | Added |
| Morgan Stanley | 262,679 | $793.3K | 0.00% | +221,466+537.4% | Added |
| Citadel Advisors LLC | 261,007 | $788.2K | 0.00% | +248,646+2,011.5% | Added |
| Barclays PLC | 237,091 | $716.0K | 0.00% | +77,684+48.7% | Added |
| Squarepoint Ops LLC | 235,242 | $710.4K | 0.00% | +208,628+783.9% | Added |
| Dimensional Fund Advisors LP | 228,094 | $689.2K | 0.00% | −15,275−6.3% | Reduced |
| Balyasny Asset Management LLC | 227,142 | $686.0K | 0.00% | +182,832+412.6% | Added |
| Knott David M Jr | 223,407 | $674.7K | 0.32% | −84,726−27.5% | Reduced |
| Northern Trust Corp | 186,617 | $563.6K | 0.00% | +3,992+2.2% | Added |
| HRT Financial LP | 182,135 | $550.0K | 0.00% | +182,135 | New |
| Jane Street Group, LLC | 174,507 | $527.0K | 0.00% | −24,499−12.3% | Reduced |
| Dauntless Investment Group, LLC | 170,689 | $515.5K | 1.90% | +170,689 | New |
| Wellington Management Group LLP | 168,742 | $509.6K | 0.00% | +168,742 | New |
| Wells Fargo & Company | 168,219 | $508.0K | 0.00% | +62,450+59.0% | Added |
| Omers Administration Corp | 148,100 | $447.3K | 0.00% | +10,100+7.3% | Added |
| Main Street Financial Solutions, LLC | 134,250 | $405.4K | 0.04% | +134,250 | New |
| Schonfeld Strategic Advisors LLC | 102,706 | $310.2K | 0.00% | +39,071+61.4% | Added |
| Simplex Trading, LLC | 96,852 | $292.0K | 0.01% | +83,691+635.9% | Added |
| Group One Trading, L.P. | 89,671 | $270.8K | 0.01% | +82,431+1,138.5% | Added |
| Jain Global LLC | 88,143 | $266.2K | 0.01% | +88,143 | New |
| Quantessence Capital LLC | 61,621 | $186.1K | 0.05% | +61,621 | New |
| Jefferies Financial Group Inc. | 55,600 | $167.9K | 0.00% | 00.0% | Unchanged |
| Brevan Howard Capital Management LP | 53,209 | $160.7K | 0.00% | +53,209 | New |
| LMR Partners LLP | 52,087 | $157.3K | 0.00% | +52,087 | New |
| Alliancebernstein L.P. | 51,917 | $156.8K | 0.00% | +51,917 | New |
| ExodusPoint Capital Management, LP | 48,227 | $146.0K | 0.00% | +31,441+187.3% | Added |
| Cannon Global Investment Management, LLC | 47,500 | $143.4K | 0.40% | +47,500 | New |
| Wolverine Trading, LLC | 45,327 | $141.9K | 0.00% | +26,474+140.4% | Added |
| Verition Fund Management LLC | 45,451 | $137.3K | 0.00% | +45,451 | New |
| D.A. Davidson & Co. | 40,200 | $121.4K | 0.00% | +1,200+3.1% | Added |
| Charles Schwab Investment Management Inc | 39,911 | $120.5K | 0.00% | +222+0.6% | Added |
| Kingswood Wealth Advisors, LLC | 37,000 | $110.3K | 0.01% | −10,000−21.3% | Reduced |
| J. Goldman & Co LP | 30,131 | $91.0K | 0.00% | −270,000−90.0% | Reduced |
| Tower Research Capital LLC (TRC) | 27,544 | $83.2K | 0.00% | −5,312−16.2% | Reduced |
| Royal Bank of Canada | 24,705 | $75.0K | 0.00% | −214,432−89.7% | Reduced |
| Apollon Wealth Management, LLC | 23,500 | $71.0K | 0.00% | +23,500 | New |
| Farther Finance Advisors, LLC | 24,423 | $70.3K | 0.00% | 00.0% | Unchanged |
| American Century Companies Inc | 22,703 | $68.6K | 0.00% | −65,409−74.2% | Reduced |
| Two Sigma Investments, LP | 22,239 | $67.2K | 0.00% | +611+2.8% | Added |
| Twinbeech Capital LP | 21,434 | $64.7K | 0.00% | +21,434 | New |
| Prelude Capital Management, LLC | 21,318 | $64.4K | 0.01% | +11,240+111.5% | Added |
| Capula Management Ltd | 21,126 | $63.8K | 0.00% | +21,126 | New |
| XTX Topco Ltd | 19,556 | $59.1K | 0.00% | +8,374+74.9% | Added |
| Engineers Gate Manager LP | 19,288 | $58.3K | 0.00% | +19,288 | New |
| Capstone Investment Advisors, LLC | 18,420 | $55.6K | 0.00% | +18,420 | New |
| Catalyst Funds Management Pty Ltd | 17,953 | $54.2K | 0.01% | +17,953 | New |
| Boothbay Fund Management, LLC | 14,568 | $44.0K | 0.00% | 00.0% | Unchanged |
| Raymond James Financial Inc | 13,850 | $41.8K | 0.00% | +3,156+29.5% | Added |
| United Bank | 13,830 | $41.8K | 0.01% | +13,830 | New |
| Hudson Bay Capital Management LP | 13,320 | $40.2K | 0.00% | +13,320 | New |
| Y-Intercept (Hong Kong) Ltd | 12,583 | $38.0K | 0.00% | +12,583 | New |
| Two Sigma Securities, LLC | 11,935 | $36.0K | 0.01% | +11,935 | New |
| Alterna Wealth Management, Inc | 10,000 | $30.2K | 0.02% | 00.0% | Unchanged |
| Leonteq Securities AG | 2,500 | $7.55K | 0.00% | +2,500 | New |
| Caitong International Asset Management Co., Ltd | 1,396 | $4.22K | 0.00% | +1,396 | New |
| Point72 Asia (Singapore) Pte. Ltd. | 1,255 | $3.79K | 0.00% | +21+1.7% | Added |
| Sachetta, LLC | 830 | $2.51K | 0.00% | +430+107.5% | Added |
| NBC Securities, Inc. | 700 | $2.00K | 0.00% | +700 | New |
| PFS Partners, LLC | 340 | $1.03K | 0.00% | 00.0% | Unchanged |
| Continuum Advisory, LLC | 210 | $634 | 0.00% | 00.0% | Unchanged |
| Caldwell Sutter Capital, Inc. | 52 | $157 | 0.00% | 00.0% | Unchanged |
| Strategic Investment Solutions, Inc. | 8 | $24 | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 1 | $3 | 0.00% | −104,479−100.0% | Reduced |
| Adage Capital Partners GP, L.L.C. | 0 | $0 | 0.00% | −1,000,000−100.0% | Sold out |
| Logos Global Management LP | 0 | $0 | 0.00% | −1,000,000−100.0% | Sold out |
| Checkpoint Capital L.P. | 0 | $0 | 0.00% | −432,561−100.0% | Sold out |
| 683 Capital Management, LLC | 0 | $0 | 0.00% | −248,000−100.0% | Sold out |
| StemPoint Capital LP | 0 | $0 | 0.00% | −200,475−100.0% | Sold out |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | −178,532−100.0% | Sold out |
| Oxford Asset Management LLP | 0 | $0 | 0.00% | −31,784−100.0% | Sold out |
| Diametric Capital, LP | 0 | $0 | 0.00% | −29,812−100.0% | Sold out |
| Alpine Global Management, LLC | 0 | $0 | 0.00% | −17,429−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −15,248−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −12,250−100.0% | Sold out |
| Victory Capital Management Inc | 0 | $0 | 0.00% | −10,138−100.0% | Sold out |
| BFSG, LLC | 0 | $0 | 0.00% | −2,000−100.0% | Sold out |