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