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