Position in ERAS
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$261,423,091
+$260,877,550 QoQ
Shares Held
16,157,175
+10917.4% QoQ
Ownership
5.20%
of shares outstanding
% of Portfolio
2.60%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Dec 2025
2 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in ERAS Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026RTW INVESTMENTS, LP holds $8,256,157,304 across 64 Biotechnology names. ERAS ranks #9 (3.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MDGL |
Madrigal Pharmaceuticals, Inc.
|
1,993,687 | $1,043,635,333 | |
| 2 | INSM |
INSMED Inc
|
4,842,880 | $791,907,737 | |
| 3 | PTGX |
Protagonist Therapeutics, Inc
|
5,059,053 | $533,224,186 | |
| 4 | PTCT |
Ptc Therapeutics, Inc.
|
7,746,415 | $527,763,253 | |
| 5 | ARGX |
Argenx SE
|
709,446 | $518,072,941 | |
| 6 | CGON |
CG Oncology, Inc.
|
6,984,808 | $472,731,805 | |
| 7 | CELC |
Celcuity Inc.
|
3,039,621 | $346,942,340 | |
| 8 | TNGX |
Tango Therapeutics, Inc.
|
13,300,620 | $278,248,970 |
All Filings in ERAS
Export CSV
2 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $261,423,091 | 16,157,175 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $545,541 | 146,651 | Shares | Sole | 2026-02-17 | |
| No filing history on record for this holder in this stock. | ||||||