WELLINGTON MANAGEMENT GROUP LLP
Position in MIRM — Mirum Pharmaceuticals, Inc.
CIK 902219
Boston, MA
Position in MIRM
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$123,309,651
+$25,533,463 QoQ
Shares Held
1,334,809
+7.8% QoQ
Ownership
2.19%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Dec 2020
19 quarters on record
Voting authority
Sole 0.ToString("F0")%
Shared 69.61460403698207.ToString("F0")%
None 30.38539596301793.ToString("F0")%
Common Shares in MIRM Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026WELLINGTON MANAGEMENT GROUP LLP holds $14,418,547,095 across 180 Biotechnology names. MIRM ranks #32 (0.9% 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 MIRM
Export CSV
19 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $123,309,651 | 1,334,809 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $97,776,188 | 1,237,830 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $57,965,407 | 790,689 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $6,034,076 | 118,571 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $5,087,225 | 112,924 | Shares | Defined | 2025-05-13 | |
| 2024-12-31 | $4,887,609 | 118,201 | Shares | Defined | 2025-02-12 | |
| 2024-09-30 | $4,771,026 | 122,334 | Shares | Defined | 2024-11-14 | |
| 2024-06-30 | $2,578,473 | 75,416 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $1,769,502 | 70,442 | Shares | Defined | 2024-05-15 | |
| 2023-03-31 | $3,717,094 | 154,750 | Shares | Defined | 2023-05-12 | |
| 2022-12-31 | $3,015,713 | 154,652 | Shares | Defined | 2023-02-13 | |
| 2022-09-30 | $3,475,011 | 165,398 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $3,454,071 | 177,496 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $3,908,461 | 177,496 | Shares | Defined | 2022-05-16 | |
| 2021-12-31 | $2,842,465 | 178,211 | Shares | Defined | 2022-02-11 | |
| 2021-09-30 | $7,264,824 | 364,700 | Shares | Defined | 2021-11-15 | |
| 2021-06-30 | $5,982,340 | 346,000 | Shares | Defined | 2021-08-16 | |
| 2021-03-31 | $2,134,614 | 107,700 | Shares | Defined | 2021-05-17 | |
| 2020-12-31 | $1,491,084 | 85,400 | Shares | Defined | 2021-02-12 | |
| No filing history on record for this holder in this stock. | ||||||