Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.
| Filed | Form | Filer | Stake | Shares | Intent | |
|---|---|---|---|---|---|---|
| 2026-08-17 | SCHEDULE 13D/A | KKR Genetic Disorder L.P. | — | 8,260,971 | view → | |
| 2026-07-10 | SCHEDULE 13D/A | VIKING GLOBAL INVESTORS LP | 5.00% | 9,792,219 | view → | |
| 2026-05-29 | SCHEDULE 13G | Farallon Capital Partners, L.P. | — | — | view → | |
| 2026-04-02 | SCHEDULE 13D/A | VIKING GLOBAL INVESTORS LP | 6.10% | 11,842,434 | view → | |
| 2025-07-01 | SCHEDULE | VIKING GLOBAL INVESTORS LP | 9.80% | 18,602,920 | view → | |
| 2025-05-14 | SCHEDULE | KKR Genetic Disorder L.P. | 7.00% | 13,260,971 | view → | |
| 2025-03-07 | SCHEDULE | KKR Genetic Disorder L.P. | 10.10% | 19,260,971 | view → | |
| 2025-01-31 | SCHEDULE | VIKING GLOBAL INVESTORS LP | 11.70% | 22,055,375 | view → | |
| 2023-07-20 | SC | VIKING GLOBAL INVESTORS LP | — | — | view → | |
| 2021-01-26 | SC | Eidos Therapeutics, Inc. | — | — | view → | |
| 2020-06-01 | SC | KKR Genetic Disorder L.P. | — | — | view → |
| Settlement | Short Interest | Days to Cover | % Δ vs prior |
|---|---|---|---|
| 2026-10-15 | 19,997,556 | 7.68 | +1.7% |
| 2026-09-30 | 19,671,292 | 5.85 | -8.7% |
| 2026-09-15 | 21,549,349 | 10.54 | -1.4% |
| 2026-08-31 | 21,845,899 | 11.18 | -6.3% |
| 2026-08-14 | 23,324,059 | 10.79 | -0.1% |
| 2026-07-31 | 23,342,623 | 11.50 | -9.3% |
| 2026-07-15 | 25,750,649 | 5.38 | +6.8% |
| 2026-06-30 | 24,102,938 | 4.51 | -5.2% |
| 2026-06-15 | 25,415,150 | 8.57 | +4.2% |
| 2026-05-29 | 24,391,359 | 9.60 | +0.9% |
| 2026-05-15 | 24,163,037 | 8.73 | +0.6% |
| 2026-04-30 | 24,026,982 | 7.59 | +6.0% |
Free. We email you when criteria match. One-click unsubscribe in every email.
Free $0 (48h-delayed alerts) · Individual $49/mo (real-time) · Team & API $199/mo · Enterprise.
See pricing →