Rock Springs Capital Management LP / XENE
Rock Springs Capital Management LP’s Xenon Pharmaceuticals Inc Position
Does Rock Springs Capital Management LP own Xenon Pharmaceuticals Inc (XENE)? Yes — 763.0K shares worth $44M (+2.62% of its 13F portfolio) as of Q1 2026, down from 787.8K shares the prior filed quarter.
Position Value
$44M
Q1 2026
Shares
763.0K
% of Portfolio
+2.62%
Quarters Held
25
currently held
Position History XENE
Reported value by quarter
| Quarter | Shares | Value | % of Portfolio |
|---|---|---|---|
| Q1 2026 | 763.0K | $44M | +2.62% |
| Q4 2025 | 787.8K | $35M | +1.81% |
| Q3 2025 | 851.7K | $34M | +2.00% |
| Q2 2025 | 931.7K | $29M | +1.82% |
| Q1 2025 | 931.7K | $31M | +1.79% |
| Q4 2024 | 1.25M | $49M | +1.87% |
| Q3 2024 | 1.32M | $52M | +1.69% |
| Q2 2024 | 1.27M | $50M | +1.49% |
| Q1 2024 | 1.26M | $54M | +1.37% |
| Q4 2023 | 1.26M | $58M | +1.42% |
| Q3 2023 | 1.18M | $40M | +1.08% |
| Q2 2023 | 1.18M | $45M | +1.08% |
| Q1 2023 | 1.18M | $42M | +1.01% |
| Q4 2022 | 1.18M | $46M | +1.12% |
| Q3 2022 | 1.16M | $42M | +1.08% |
| Q2 2022 | 1.12M | $34M | +0.99% |
| Q1 2022 | 842.5K | $26M | +0.65% |
| Q4 2021 | 771.4K | $24M | +0.56% |
| Q3 2021 | 583.1K | $9M | +0.19% |
| Q2 2021 | 572.5K | $11M | +0.21% |
| Q1 2021 | 572.5K | $10M | +0.22% |
| Q4 2020 | 515.0K | $8M | +0.17% |
| Q3 2020 | 515.7K | $6M | +0.14% |
| Q2 2020 | 515.7K | $6M | +0.18% |
| Q1 2020 | 500.0K | $6M | +0.23% |
Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Rock Springs Capital Management LP’s full portfolio or all institutional holders of XENE.