Viking Global Investors — SION Trade History
Quarter-by-quarter changes in the SIONNA THERAPEUTICS INC position · CUSIP 829401108
Currently held · 1.5 YearsFirst seen: 2025 Q1
| Quarter | Filed | Activity | Shares | Δ Shares | Δ % | Value | % Port. |
|---|---|---|---|---|---|---|---|
| 2026 Q2 | 2026-08-14 | Hold | 3,195,181 | — | 0.0% | $140.6M | 0.40% |
| 2026 Q1 | 2026-05-15 | Hold | 3,195,181 | — | 0.0% | $128.1M | 0.36% |
| 2025 Q4 | 2026-02-17 | Hold | 3,195,181 | — | 0.0% | $131.4M | 0.35% |
| 2025 Q3 | 2025-11-14 | Hold | 3,195,181 | — | 0.0% | $94.0M | 0.24% |
| 2025 Q2 | 2025-08-14 | Add | 3,195,181 | 242,427 | +8.2% | $55.4M | 0.16% |
| 2025 Q1 | 2025-05-15 | New | 2,952,754 | 2,952,754 | — | $30.9M | 0.10% |
| 2024 Q4 | 2025-02-14 | — | — | — | — | — | — |
| 2024 Q3 | 2024-11-14 | — | — | — | — | — | — |
| 2024 Q2 | 2024-08-14 | — | — | — | — | — | — |
| 2024 Q1 | 2024-05-15 | — | — | — | — | — | — |
| 2023 Q4 | 2024-02-14 | — | — | — | — | — | — |
| 2023 Q3 | 2023-11-14 | — | — | — | — | — | — |
| 2023 Q2 | 2023-08-14 | — | — | — | — | — | — |
| 2023 Q1 | 2023-05-15 | — | — | — | — | — | — |
| 2022 Q4 | 2023-02-14 | — | — | — | — | — | — |
| 2022 Q3 | 2022-11-14 | — | — | — | — | — | — |
| 2022 Q2 | 2022-08-15 | — | — | — | — | — | — |
| 2021 Q3 | 2022-05-16 | — | — | — | — | — | — |
| 2021 Q4 | 2022-05-16 | — | — | — | — | — | — |
| 2022 Q1 | 2022-05-16 | — | — | — | — | — | — |
| 2021 Q2 | 2021-08-16 | — | — | — | — | — | — |
| 2021 Q1 | 2021-05-17 | — | — | — | — | — | — |
| 2020 Q4 | 2021-02-16 | — | — | — | — | — | — |
| 2020 Q3 | 2020-11-16 | — | — | — | — | — | — |
| 2020 Q2 | 2020-08-07 | — | — | — | — | — | — |
| 2020 Q1 | 2020-05-13 | — | — | — | — | — | — |
| 2019 Q4 | 2020-02-13 | — | — | — | — | — | — |
| 2019 Q3 | 2019-11-13 | — | — | — | — | — | — |
| 2019 Q2 | 2019-08-14 | — | — | — | — | — | — |
| 2019 Q1 | 2019-05-15 | — | — | — | — | — | — |
| 2018 Q4 | 2019-02-14 | — | — | — | — | — | — |
| 2018 Q3 | 2018-11-14 | — | — | — | — | — | — |
| 2018 Q2 | 2018-08-14 | — | — | — | — | — | — |
| 2018 Q1 | 2018-05-15 | — | — | — | — | — | — |
| 2017 Q4 | 2018-02-14 | — | — | — | — | — | — |
| 2017 Q3 | 2017-11-14 | — | — | — | — | — | — |
| 2017 Q2 | 2017-08-14 | — | — | — | — | — | — |
| 2017 Q1 | 2017-05-15 | — | — | — | — | — | — |
| 2016 Q4 | 2017-02-14 | — | — | — | — | — | — |
| 2016 Q3 | 2016-11-14 | — | — | — | — | — | — |
Share counts are split-adjusted. Time held counts consecutive quarters ending with the latest filing; more than ten years shows as ">10 Years".
13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.