Achilles Therapeutics plc - 00449L102
Detailed investor-level table based on 13F positions.
Early Q1 2026 data: only 2 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Siren, L.L.C. | History | No change | 755,375 | 861 | 0.04% | 0.04% | 1 | 0 | 0.0% | Q4 2024 | Feb 14, 2025 |
| RENAISSANCE TECHNOLOGIES LLC | History | Reduced | 547,233 | 623 | 0.0% | 0.0% | 2 | -90,900 | -14.24% | Q4 2024 | Feb 13, 2025 |
| BOOTHBAY FUND MANAGEMENT, LLC | History | Reduced | 418,441 | 477 | 0.01% | 0.01% | 3 | -2,040 | -0.49% | Q4 2024 | Feb 14, 2025 |
| TWO SIGMA INVESTMENTS, LP | History | Added to | 61,637 | 70 | 0.0% | 0.0% | 4 | +40,388 | 190.07% | Q4 2024 | Feb 14, 2025 |
| BNP PARIBAS FINANCIAL MARKETS | History | New | 50,189 | 57 | 0.0% | — | 5 | +50,189 | New | Q4 2024 | Feb 14, 2025 |
| MORGAN STANLEY | History | Added to | 33,731 | 38 | 0.0% | 0.0% | 6 | +17,300 | 105.29% | Q4 2024 | May 15, 2025 |
| TWO SIGMA ADVISERS, LP | History | Added to | 34,200 | 38 | 0.0% | 0.0% | 7 | +11,800 | 52.68% | Q4 2024 | Feb 14, 2025 |
| XTX Topco Ltd | History | New | 26,824 | 30 | 0.0% | — | 8 | +26,824 | New | Q4 2024 | Feb 13, 2025 |
| GEODE CAPITAL MANAGEMENT, LLC | History | No change | 21,590 | 24 | 0.0% | 0.0% | 9 | 0 | 0.0% | Q4 2024 | Feb 12, 2025 |
| CITADEL ADVISORS LLC | History | New | 15,799 | 18 | 0.0% | — | 10 | +15,799 | New | Q4 2024 | Feb 14, 2025 |
| RHUMBLINE ADVISERS | History | No change | 4,480 | 5 | 0.0% | 0.0% | 11 | 0 | 0.0% | Q4 2024 | May 29, 2025 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Closed out | 0 | 0 | — | 0.0% | — | -12,434 | -100.0% | Q3 2024 | Nov 14, 2024 |
| SBI Securities Co., Ltd. | History | New | 322 | 0 | — | — | — | +322 | New | Q4 2024 | Feb 06, 2025 |
| BANK OF AMERICA CORP /DE/ | History | Closed out | 0 | 0 | — | — | — | -15 | -100.0% | Q3 2024 | Mar 18, 2025 |
| JPMORGAN CHASE & CO | History | No change | 137 | 0 | — | — | — | 0 | 0.0% | Q4 2024 | Feb 12, 2025 |