§ 13F · FUND PROFILE
RTW INVESTMENTS, LP.
Institutional filer · behavioral pattern: Other. Summary pending.
AUM · $8.1B (13F)Positions · 74Turnover · — · Q1Filed · May 15, 2026
CONCENTRATION
—
Top 10 holdings
NEW BUYS
0
+$177M deployed
EXITS
0
No exits
SECTOR SHIFT
—
No prior quarter data
3YR HIT RATE
—
Top-5 overlap
§ 01 · TOP HOLDINGS
The book · Q1 2026
FILED MAY 15, 2026
| # | Ticker | Name | Shares | $ value | % port | Δ Q1 |
|---|---|---|---|---|---|---|
| 1 | MDGL | MADRIGAL PHARMACEUTICALS INC | 1.99M | $1.0B | 10.4% | ±0% |
| 2 | INSM | INSMED INC | 4.84M | $792M | 7.9% | ±0% |
| 3 | PTGX | PROTAGONIST THERAPEUTICS INC | 5.06M | $533M | 5.3% | ±0% |
| 4 | PTCT | PTC THERAPEUTICS INC | 7.75M | $528M | 5.3% | ±0% |
| 5 | ARGX | ARGENX SE | 709K | $518M | 5.2% | +5% |
| 6 | CGON | CG ONCOLOGY INC | 6.98M | $473M | 4.7% | +247% |
| 7 | CELC | CELCUITY INC | 3.04M | $347M | 3.5% | +453% |
| 8 | TNGX | TANGO THERAPEUTICS INC | 13.30M | $278M | 2.8% | +792% |
| 9 | ERAS | ERASCA INC | 16.16M | $261M | 2.6% | +10917% |
| 10 | NTRA | NATERA INC | 1.25M | $250M | 2.5% | −17% |
§ 02 · SECTOR ALLOCATION
Where the money is
Sector data pending
§ 03 · THE RTW SIGNAL
AC read
RTW INVESTMENTS, LP is a Other fund managing $8.1 billion in assets. The fund runs a portfolio of 74 positions.
Read the full dossier →§ 04 · FILING HISTORY
Q-by-Q deltas
2 FILINGS
Q1 2026
Steady book
+0 buys · −0 exits · 0 changed
Q4 2025
Steady book
+0 buys · −0 exits · 0 changed
Q3 2025
Steady book
+0 buys · −0 exits · 0 changed