Who owns MIRM
305 institutions reported holding MIRM for 2026Q1, together 116% of the company, more than the 277 a quarter earlier.
305
Institutions reporting a position · as of 2026Q1 · up from 277 the quarter before
- Shares held by institutions
- 68.1M
Shares held by institutions · 116% of the company · long US equity positions only, as reported on Form 13F
- Reported value
- $6.28B
Reported value · at 2026-03-31 prices, not today's
- Opened vs closed
- 59 / 36
Opened vs closed · new positions against positions exited in the latest quarter
Details›
- Reporting quarter2026-03-31
- 2026Q1
- Quarters on record
- 27
- New positions
- 59
- Positions exited
- 36
- Added to
- 109
- Reduced
- 84
| Quarter | Filers | Shares | Reported value |
|---|---|---|---|
| 2026Q1 | 305 | 68.1M | $6.28B |
| 2025Q4 | 277 | 60.9M | $4.81B |
| 2025Q3 | 267 | 57.2M | $4.19B |
| 2025Q2 | 211 | 55.3M | $2.81B |
| 2025Q1 | 212 | 54.0M | $2.44B |
| 2024Q4 | 203 | 52.9M | $2.19B |
| 2024Q3 | 175 | 53.2M | $2.07B |
| 2024Q2 | 158 | 53.3M | $1.82B |
| 2024Q1 | 170 | 53.2M | $1.34B |
| 2023Q4 | 187 | 50.3M | $1.48B |
| 2023Q3 | 159 | 48.9M | $1.55B |
| 2023Q2 | 146 | 36.9M | $956M |
| 2023Q1 | 117 | 34.7M | $833M |
| 2022Q4 | 104 | 33.3M | $650M |
| 2022Q3 | 112 | 33.7M | $709M |
| 2022Q2 | 109 | 29.3M | $569M |
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Frazier Life Sciences Management, L.P. | 7.7M | n/a | $709M |
| HENDERSON GROUP PLC | 6.9M | n/a | $642M |
| VANGUARD GROUP INC | 4.2M | n/a | $391M |
| BlackRock Inc. | 3.8M | n/a | $355M |
| FMR LLC | 2.0M | n/a | $182M |
| STATE STREET CORP | 1.9M | n/a | $180M |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1.7M | n/a | $159M |
| BVF INC/IL | 1.6M | n/a | $146M |
| EVENTIDE ASSET MANAGEMENT, LLC | 1.4M | n/a | $130M |
| WELLINGTON MANAGEMENT GROUP LLP | 1.3M | n/a | $123M |
SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.
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