WELLINGTON MANAGEMENT GROUP LLP
Position in RYTM — Rhythm Pharmaceuticals, Inc.
CIK 902219
Boston, MA
Position in RYTM
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$23,808,642
-$2,968,052 QoQ
Shares Held
273,757
+9.4% QoQ
Ownership
0.399%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 0.ToString("F0")%
Shared 74.75169584704683.ToString("F0")%
None 25.248304152953168.ToString("F0")%
Common Shares in RYTM Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026WELLINGTON MANAGEMENT GROUP LLP holds $14,419,413,771 across 180 Biotechnology names. RYTM ranks #59 (0.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
3,212,589 | $1,434,549,489 | |
| 2 | REGN |
Regeneron Pharmaceuticals, Inc.
|
1,837,459 | $1,419,694,318 | |
| 3 | ARGX |
Argenx SE
|
1,021,457 | $745,918,971 | |
| 4 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
1,935,925 | $640,539,501 | |
| 5 | RVMD |
Revolution Medicines, Inc.
|
6,027,819 | $586,205,394 | |
| 6 | CYTK |
Cytokinetics Inc
|
8,009,489 | $527,905,416 | |
| 7 | IONS |
Ionis Pharmaceuticals Inc
|
6,391,816 | $479,961,458 | |
| 8 | ASND |
Ascendis Pharma A/S
|
1,757,633 | $402,023,391 |
All Filings in RYTM
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 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. | ||||||