Rtw Investments, LP’s Argenx SE Position
Does Rtw Investments, LP own Argenx SE (ARGX)? Yes — 709.4K shares worth $518M (+5.16% of its 13F portfolio) as of Q1 2026, up from 673.5K shares the prior filed quarter.
Position Value
$518M
Q1 2026
Shares
709.4K
% of Portfolio
+5.16%
Quarters Held
30
currently held
Position History ARGX
Reported value by quarter
| Quarter | Shares | Value | % of Portfolio |
|---|---|---|---|
| Q1 2026 | 709.4K | $518M | +5.16% |
| Q4 2025 | 673.5K | $566M | +5.67% |
| Q3 2025 | 673.5K | $497M | +6.12% |
| Q2 2025 | 673.5K | $371M | +5.29% |
| Q1 2025 | 673.5K | $399M | +6.10% |
| Q4 2024 | 673.5K | $414M | +6.26% |
| Q3 2024 | 654.4K | $355M | +5.13% |
| Q2 2024 | 654.4K | $281M | +4.36% |
| Q1 2024 | 667.2K | $263M | +3.88% |
| Q4 2023 | 667.2K | $254M | +3.96% |
| Q3 2023 | 507.2K | $249M | +5.26% |
| Q2 2023 | 482.2K | $188M | +3.58% |
| Q1 2023 | 482.2K | $180M | +3.74% |
| Q4 2022 | 482.2K | $183M | +3.73% |
| Q3 2022 | 467.2K | $165M | +3.80% |
| Q2 2022 | 442.6K | $168M | +4.33% |
| Q1 2022 | 337.0K | $106M | +2.20% |
| Q4 2021 | 317.4K | $111M | +1.62% |
| Q3 2021 | 140.3K | $42M | +0.64% |
| Q2 2021 | 31.8K | $10M | +0.14% |
| Q1 2021 | 31.8K | $9M | +0.14% |
| Q4 2020 | 31.8K | $9M | +0.16% |
| Q3 2020 | 31.8K | $8M | +0.20% |
| Q2 2020 | 31.8K | $7M | +0.20% |
| Q1 2020 | 31.8K | $4M | +0.18% |
| Q4 2019 | 31.8K | $5M | +0.19% |
| Q3 2019 | 31.5K | $4M | +0.21% |
| Q2 2019 | 31.4K | $4M | +0.24% |
| Q1 2019 | 30.7K | $4M | +0.26% |
| Q4 2018 | 28.8K | $3M | +0.25% |
Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Rtw Investments, LP’s full portfolio or all institutional holders of ARGX.