RTW INVESTMENTS, LP is an institutional investment manager that files quarterly 13F reports with the SEC. As of Q2 2026, the fund manages $11.7B in reported equity holdings across 84 positions. The largest holdings are MDGL (9.1%), ARGX (5.6%), PTCT (5.4%), PTGX (5.3%), CGON (5.2%). The portfolio is concentrated in Other (95.8%), Healthcare (4.2%). Data sourced from SEC EDGAR 13F filings (CIK 1493215).