WELLINGTON MANAGEMENT GROUP LLP
Position in RYTM — Rhythm Pharmaceuticals, Inc.
CIK 902219
Boston, MA
Position in RYTM
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$54,265,576
+$30,456,934 QoQ
Shares Held
488,747
+78.5% QoQ
Ownership
0.710%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 0%
Shared 78%
None 22%
Common Shares in RYTM Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026WELLINGTON MANAGEMENT GROUP LLP holds $15,052,705,482 across 207 Biotechnology names. RYTM ranks #47 (0.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
3,247,658 | $1,613,209,155 | |
| 2 | ARGX |
Argenx SE
|
930,548 | $863,334,513 | |
| 3 | REGN |
Regeneron Pharmaceuticals, Inc.
|
1,270,087 | $791,950,042 | |
| 4 | RVMD |
Revolution Medicines, Inc.
|
3,843,415 | $719,794,757 | |
| 5 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
2,110,407 | $635,295,816 | |
| 6 | IONS |
Ionis Pharmaceuticals Inc
|
7,651,415 | $606,680,693 | |
| 7 | CYTK |
Cytokinetics Inc
|
6,931,770 | $590,517,483 | |
| 8 | MDGL |
Madrigal Pharmaceuticals, Inc.
|
825,714 | $443,367,129 |
All Filings in RYTM
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $54,265,576 | 488,747 | Shares | Defined | 2026-08-14 | |
| 2026-03-31 | $23,808,642 | 273,757 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $26,776,694 | 250,156 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $2,471,931 | 24,477 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $1,417,034 | 22,425 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $1,247,865 | 23,558 | Shares | Defined | 2025-05-13 | |
| 2024-12-31 | $1,430,568 | 25,555 | Shares | Defined | 2025-02-12 | |
| 2024-09-30 | $1,452,040 | 27,716 | Shares | Defined | 2024-11-14 | |
| 2024-06-30 | $8,307,504 | 202,326 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $8,385,349 | 193,523 | Shares | Defined | 2024-05-15 | |
| 2023-12-31 | $6,426,697 | 139,802 | Shares | Defined | 2024-02-12 | |
| 2023-09-30 | $3,150,880 | 137,443 | Shares | Defined | 2023-11-14 | |
| 2023-06-30 | $2,312,243 | 140,221 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $1,991,532 | 111,633 | Shares | Defined | 2023-05-12 | |
| 2022-12-31 | $3,113,393 | 106,916 | Shares | Defined | 2023-02-13 | |
| 2022-09-30 | $3,753,718 | 153,213 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $355,094 | 85,565 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $988,542 | 85,811 | Shares | Defined | 2022-05-16 | |
| 2021-12-31 | $7,443,909 | 745,883 | Shares | Defined | 2022-02-11 | |
| 2021-09-30 | $11,048,131 | 845,952 | Shares | Defined | 2021-11-15 | |
| 2021-06-30 | $25,377,263 | 1,296,081 | Shares | Defined | 2021-08-16 | |
| 2021-03-31 | $21,595,471 | 1,015,302 | Shares | Defined | 2021-05-17 | |
| 2020-12-31 | $62,469,476 | 2,101,227 | Shares | Defined | 2021-02-12 | |
| 2020-09-30 | $51,452,119 | 2,374,348 | Shares | Defined | 2020-11-16 | |
| 2020-06-30 | $57,911,380 | 2,596,923 | Shares | Defined | 2020-08-14 | |
| 2020-03-31 | $40,610,429 | 2,668,228 | Shares | Defined | 2020-05-14 | |
| No filing history on record for this holder in this stock. | ||||||