§ 13F · FUND PROFILE
RTW INVESTMENTS, LP.
Institutional filer · behavioral pattern: Other. Summary pending.
AUM · $8116.1T (13F)Positions · 74Turnover · — · Q4Filed · Feb 17, 2026
CONCENTRATION
—
Top 10 holdings
NEW BUYS
0
+$1187.4T deployed
EXITS
0
No exits
SECTOR SHIFT
—
No prior quarter data
3YR HIT RATE
—
Top-5 overlap
§ 01 · TOP HOLDINGS
The book · Q4 2025
FILED FEB 17, 2026
| # | Ticker | Name | Shares | $ value | % port | Δ Q4 |
|---|---|---|---|---|---|---|
| 1 | MDGL | MADRIGAL PHARMACEUTICALS INC | 1.99M | $1161.0T | 11.6% | ±0% |
| 2 | INSM | INSMED INC | 4.84M | $842.9T | 8.4% | +57% |
| 3 | PTCT | PTC THERAPEUTICS INC | 7.75M | $588.4T | 5.9% | ±0% |
| 4 | ARGX | ARGENX SE | 673K | $566.4T | 5.7% | ±0% |
| 5 | PTGX | PROTAGONIST THERAPEUTICS INC | 5.06M | $441.9T | 4.4% | −12% |
| 6 | NTRA | NATERA INC | 1.50M | $343.6T | 3.4% | −25% |
| 7 | RDNT | RADNET INC | 3.94M | $281.0T | 2.8% | +40% |
| 8 | TARS | TARSUS PHARMACEUTICALS INC | 3.34M | $273.1T | 2.7% | +5% |
| 9 | COGT | COGENT BIOSCIENCES INC | 7.59M | $269.7T | 2.7% | +119% |
| 10 | PEN | PENUMBRA INC | 866K | $269.4T | 2.7% | ±0% |
§ 02 · SECTOR ALLOCATION
Where the money is
Sector data pending
§ 03 · THE RTW SIGNAL
AC read
RTW INVESTMENTS, LP is a Other fund managing $8116139.1 trillion in assets. The fund runs a portfolio of 74 positions.
Read the full dossier →§ 04 · FILING HISTORY
Q-by-Q deltas
2 FILINGS
Q4 2025
Steady book
+0 buys · −0 exits · 0 changed
Q3 2025
Steady book
+0 buys · −0 exits · 0 changed