Clearbridge Investments, LLC
Position in MIRM — Mirum Pharmaceuticals, Inc.
CIK 1348883
NEW YORK, NY
Position in MIRM
as of Mar 31, 2026
· filed May 13, 2026
Position Value
$62,067,350
-$6,335,383 QoQ
Shares Held
671,870
-22.4% QoQ
Ownership
1.10%
of shares outstanding
% of Portfolio
0.05%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2022
17 quarters on record
Voting authority
Sole 99.99032550939914.ToString("F0")%
Shared 0.ToString("F0")%
None 0.009674490600860286.ToString("F0")%
Common Shares in MIRM Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026Clearbridge Investments, LLC holds $2,718,012,251 across 26 Biotechnology names. MIRM ranks #8 (2.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
2,700,975 | $1,206,093,376 | |
| 2 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
1,356,036 | $448,671,631 | |
| 3 | ARGX |
Argenx SE
|
231,356 | $168,947,719 | |
| 4 | TGTX |
Tg Therapeutics, Inc.
|
3,210,930 | $106,667,094 | |
| 5 | INSM |
INSMED Inc
|
643,435 | $105,214,491 | |
| 6 | BBIO |
BridgeBio Pharma, Inc.
|
951,200 | $70,636,112 | |
| 7 | PTGX |
Protagonist Therapeutics, Inc
|
621,820 | $65,539,828 | |
| 8 | MIRM |
Mirum Pharmaceuticals, Inc.
This page
|
671,870 | $62,067,350 |
All Filings in MIRM
Export CSV
17 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $62,067,350 | 671,870 | Shares | Sole | 2026-05-13 | |
| 2025-12-31 | $68,402,733 | 865,967 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $73,588,797 | 1,003,803 | Shares | Sole | 2025-11-13 | |
| 2025-06-30 | $52,290,849 | 1,027,527 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $44,061,918 | 978,067 | Shares | Sole | 2025-05-13 | |
| 2024-12-31 | $37,517,557 | 907,317 | Shares | Sole | 2025-02-12 | |
| 2024-09-30 | $34,674,900 | 889,100 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $23,930,709 | 699,933 | Shares | Sole | 2024-08-27 | |
| 2024-03-31 | $6,621,230 | 263,584 | Shares | Sole | 2024-05-13 | |
| 2023-12-31 | $7,796,143 | 264,097 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $510,782 | 16,164 | Shares | Sole | 2023-11-13 | |
| 2023-06-30 | $531,990 | 20,564 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $1,223,698 | 50,945 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $607,522 | 31,155 | Shares | Sole | 2023-02-10 | |
| 2022-09-30 | $434,591 | 20,685 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $402,763 | 20,697 | Shares | Sole | 2022-08-11 | |
| 2022-03-31 | $455,747 | 20,697 | Shares | Sole | 2022-05-13 | |
| No filing history on record for this holder in this stock. | ||||||