Position in IMTX
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$126,634,305
+$6,584,088 QoQ
Shares Held
12,869,340
+12.6% QoQ
Ownership
9.42%
of shares outstanding
% of Portfolio
1.26%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2020
23 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in IMTX 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. IMTX ranks #19 (1.5% 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 IMTX
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23 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $126,634,305 | 12,869,340 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $120,050,217 | 11,433,354 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $75,109,056 | 8,815,617 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $37,499,417 | 6,970,152 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $31,161,890 | 6,909,510 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $46,503,239 | 6,540,540 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $114,100,000 | 10,000,000 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $116,200,000 | 10,000,000 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $105,100,000 | 10,000,000 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $15,636,112 | 1,484,911 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $9,785,100 | 845,000 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $9,751,300 | 845,000 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $5,830,500 | 845,000 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $7,359,950 | 845,000 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $3,500,000 | 350,000 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $3,048,500 | 350,000 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $2,796,500 | 350,000 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $4,704,000 | 350,000 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $4,550,000 | 350,000 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $4,063,500 | 350,000 | Shares | Sole | 2021-08-13 | |
| 2021-03-31 | $3,923,500 | 350,000 | Shares | Sole | 2021-05-14 | |
| 2020-12-31 | $3,776,500 | 350,000 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $3,713,500 | 350,000 | Shares | Sole | 2020-11-16 | |
| No filing history on record for this holder in this stock. | ||||||