Position in PTCT
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$527,763,253
-$60,654,430 QoQ
Shares Held
7,746,415
0.0% QoQ
Ownership
93.4%
of shares outstanding
% of Portfolio
5.25%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in PTCT 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. PTCT ranks #4 (6.4% 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.
This page
|
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 PTCT
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $527,763,253 | 7,746,415 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $588,417,683 | 7,746,415 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $475,397,488 | 7,746,415 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $378,334,908 | 7,746,415 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $381,340,151 | 7,483,127 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $333,725,752 | 7,393,127 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $274,285,011 | 7,393,127 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $226,081,823 | 7,393,127 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $215,963,287 | 7,423,970 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $204,604,613 | 7,423,970 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $162,140,742 | 7,235,196 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $294,255,421 | 7,235,196 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $343,599,355 | 7,093,298 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $214,339,321 | 5,615,387 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $282,153,116 | 5,620,580 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $202,114,998 | 5,045,307 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $194,804,016 | 5,221,228 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $210,858,665 | 5,293,966 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $196,988,474 | 5,293,966 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $223,775,942 | 5,293,966 | Shares | Sole | 2021-08-13 | |
| 2021-03-31 | $250,669,290 | 5,293,966 | Shares | Sole | 2021-05-14 | |
| 2020-12-31 | $257,658,651 | 4,221,836 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $186,686,120 | 3,993,286 | Shares | Sole | 2020-11-16 | |
| 2020-06-30 | $201,088,708 | 3,963,120 | Shares | Sole | 2020-08-14 | |
| 2020-03-31 | $175,439,799 | 3,932,746 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||