RTW INVESTMENTS, LP — 13F holdings

RTW INVESTMENTS, LP reported 84 holdings worth $11.7B in its 13F filing for Q2 2026, filed August 14, 2026.

Largest positions

1. MDGL MADRIGAL PHARMACEUTICALS INC — $1.07B (9.1%)
2. ARGX ARGENX SE — $658M (5.6%)
3. PTCT PTC THERAPEUTICS INC — $632M (5.4%)
4. PTGX PROTAGONIST THERAPEUTICS INC — $620M (5.3%)
5. CGON CG ONCOLOGY INC — $605M (5.2%)
6. INSM INSMED INC — $516M (4.4%)
7. TNGX TANGO THERAPEUTICS INC — $435M (3.7%)
8. SYRE SPYRE THERAPEUTICS INC — $377M (3.2%)
9. CELC CELCUITY INC — $346M (3.0%)
10. ERAS Erasca Inc — $329M (2.8%)