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, Q3 2023
Institutional positions in aTYR PHARMA INC as of Sep 30, 2023. 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
- 41
- 0 vs. Q2 2023
- Shares held
- 36.7M
- +1.04M (+2.9%) vs. Q2 2023
- Total value
- $58.7M
- −$18.4M (−23.8%) vs. Q2 2023
- New holders
- 7
- 6 more added
- Sold out
- 7
- 18 more reduced
Compare with Q2 2023: 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, Q3 2023
Shares, value and share of portfolio for each institution holding aTYR PHARMA INC; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Federated Hermes, Inc. | 10,169,600 | $16.1M | 0.04% | −20,366−0.2% | Reduced |
| FMR LLC | 8,556,925 | $13.5M | 0.00% | +413,162+5.1% | Added |
| Stonepine Capital Management, LLC | 4,626,624 | $7.31M | 2.43% | −6000.0% | Reduced |
| Tikvah Management LLC | 2,460,833 | $3.89M | 1.39% | 00.0% | Unchanged |
| Alyeska Investment Group, L.P. | 2,455,555 | $3.88M | 0.03% | +250,000+11.3% | Added |
| Vanguard Group Inc | 2,283,606 | $3.61M | 0.00% | −17,108−0.7% | Reduced |
| Citadel Advisors LLC | 1,784,136 | $2.82M | 0.00% | +1,464,046+457.4% | Added |
| BlackRock Inc. | 1,357,503 | $2.14M | 0.00% | −12,656−0.9% | Reduced |
| Geode Capital Management, LLC | 586,997 | $927.7K | 0.00% | −6,477−1.1% | Reduced |
| Renaissance Technologies LLC | 505,993 | $799.0K | 0.00% | −20,362−3.9% | Reduced |
| Tang Capital Management LLC | 471,134 | $744.4K | 0.11% | +321,134+214.1% | Added |
| Man Group plc | – | $665.7K | 0.00% | – | – |
| Dimensional Fund Advisors LP | 236,449 | $373.6K | 0.00% | −41,355−14.9% | Reduced |
| Two Sigma Advisers, LP | 189,250 | $299.0K | 0.00% | −189,600−50.0% | Reduced |
| State Street Corp | 166,808 | $263.6K | 0.00% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 139,990 | $221.2K | 0.00% | −19,369−12.2% | Reduced |
| Two Sigma Investments, LP | 92,332 | $145.9K | 0.00% | −328,258−78.0% | Reduced |
| Millennium Management LLC | 84,314 | $133.2K | 0.00% | −267,790−76.1% | Reduced |
| Royal Bank of Canada | 80,973 | $128.0K | 0.00% | −3,456−4.1% | Reduced |
| Northern Trust Corp | 78,519 | $124.1K | 0.00% | −37,410−32.3% | Reduced |
| XTX Topco Ltd | 73,894 | $116.8K | 0.02% | −96,531−56.6% | Reduced |
| Pale Fire Capital SE | 55,857 | $88.3K | 0.01% | +55,857 | New |
| JPMorgan Chase & Co | 49,642 | $78.4K | 0.00% | −9,657−16.3% | Reduced |
| Boothbay Fund Management, LLC | 36,000 | $56.9K | 0.00% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 27,559 | $44.0K | 0.00% | +27,559 | New |
| Charles Schwab Investment Management Inc | 26,689 | $42.2K | 0.00% | 00.0% | Unchanged |
| D.A. Davidson & Co. | 22,750 | $35.9K | 0.00% | 00.0% | Unchanged |
| American Century Companies Inc | 22,080 | $34.9K | 0.00% | +7,889+55.6% | Added |
| Bank of New York Mellon Corp | 16,426 | $26.0K | 0.00% | 00.0% | Unchanged |
| Virtu Financial LLC | 13,662 | $22.0K | 0.00% | +13,662 | New |
| Cubist Systematic Strategies, LLC | 11,961 | $18.9K | 0.00% | +11,961 | New |
| Alterna Wealth Management, Inc | 10,000 | $15.8K | 0.02% | 00.0% | Unchanged |
| Simplex Trading, LLC | 9,032 | $14.0K | 0.00% | +9,032 | New |
| UBS Group AG | 4,399 | $6.95K | 0.00% | +4,399 | New |
| Morgan Stanley | 2,404 | $3.80K | 0.00% | −51−2.1% | Reduced |
| Wells Fargo & Company | 1,875 | $2.96K | 0.00% | −16−0.8% | Reduced |
| Tower Research Capital LLC (TRC) | 682 | $1.08K | 0.00% | +471+223.2% | Added |
| PFS Partners, LLC | 400 | $632 | 0.00% | 00.0% | Unchanged |
| Qube Research & Technologies Ltd | 188 | $297 | 0.00% | +188 | New |
| Bank of America Corp | 116 | $183 | 0.00% | −1,367−92.2% | Reduced |
| Caldwell Sutter Capital, Inc. | 52 | $82 | 0.00% | 00.0% | Unchanged |
| Occudo Quantitative Strategies LP | 0 | $0 | 0.00% | −54,892−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −46,634−100.0% | Sold out |
| Vontobel Holding Ltd. | 0 | $0 | 0.00% | −30,000−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −12,001−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −11,100−100.0% | Sold out |
| Clearview Wealth Advisors LLC | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| ICA Group Wealth Management, LLC | 0 | $0 | 0.00% | −75−100.0% | Sold out |