RTW INVESTMENTS, LP
CIK 0001493215 · NEW YORK, NY · Quarter end: 2026-06-30 · Filed on: 2026-08-14 · Open the SEC source ↗
Portfolio Value (AUM)Total value of the fund's US stock portfolio reported to the SEC.
$11.71B
2026 Q2
Positions
84
Top-10 ConcentrationHow much of the portfolio sits in the 10 largest holdings. High = concentrated bets.
47.7%
Est. Net Flow (Q)
—
2026 Q2
Top Holdings
MDGL
MADRIGAL PHARMACEUTICALS INC
9.1%
ARGX
ARGENX SE
5.6%
PTCT
PTC THERAPEUTICS INC
5.4%
PTGX
PROTAGONIST THERAPEUTICS INC
5.3%
CGON
CG ONCOLOGY INC
5.2%
INSM
INSMED INC
4.4%
TNGX
TANGO THERAPEUTICS INC
3.7%
SYRE
SPYRE THERAPEUTICS INC
3.2%
New / Increased
No prior quarter data
Reduced / Exited
No prior quarter data
Read the 2026-Q2 quarterly report · 13F Filing Calendar
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.