| Filed | Form | Filer | Stake | Shares | Intent | |
|---|---|---|---|---|---|---|
| 2024-11-04 | SC | TCI Fund Management Ltd | — | — | view → | |
| 2022-01-26 | SC | TCI Fund Management Ltd | — | — | view → | |
| 2021-10-18 | SC | TCI Fund Management Ltd | — | — | view → | |
| 2021-09-27 | SC | TCI Fund Management Ltd | — | — | view → | |
| 2021-09-17 | SC | TCI Fund Management Ltd | — | — | view → | |
| 2021-09-13 | SC | TCI Fund Management Ltd | — | — | view → | |
| 2021-09-08 | SC | CASCADE INVESTMENT, L.L.C. | — | — | view → | |
| 2021-09-07 | SC | TCI Fund Management Ltd | — | — | view → | |
| 2021-08-31 | SC | TCI Fund Management Ltd | — | — | view → | |
| 2021-08-06 | SC | CASCADE INVESTMENT, L.L.C. | — | — | view → | |
| 2021-05-04 | SC | CASCADE INVESTMENT, L.L.C. | — | — | view → |
| Settlement | Short Interest | Days to Cover | % Δ vs prior |
|---|---|---|---|
| 2026-05-29 | 7,333,698 | 6.15 | +44.2% |
| 2026-05-15 | 5,086,732 | 4.48 | +129.3% |
| 2026-04-30 | 2,217,974 | 1.36 | +3.4% |
| 2026-04-15 | 2,146,075 | 1.62 | +3.2% |
| 2026-03-31 | 2,080,162 | 1.19 | -60.3% |
| 2026-03-13 | 5,237,027 | 2.67 | -16.9% |
| 2026-02-27 | 6,302,164 | 3.29 | +79.1% |
| 2026-02-13 | 3,519,470 | 1.62 | +58.1% |
| 2026-01-30 | 2,226,368 | 1.38 | -44.6% |
| 2026-01-15 | 4,019,316 | 3.65 | -4.7% |
| 2025-12-31 | 4,217,944 | 4.27 | +20.1% |
| 2025-12-15 | 3,512,823 | 1.92 | -10.4% |
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