Who owns MLYS
212 institutions reported holding MLYS for 2026Q1, together 109% of the company, fewer than the 221 a quarter earlier.
212
Institutions reporting a position · as of 2026Q1 · down from 221 the quarter before
- Shares held by institutions
- 90.3M
Shares held by institutions · 109% of the company · long US equity positions only, as reported on Form 13F
- Reported value
- $2.46B
Reported value · at 2026-03-31 prices, not today's
- Top 5 holders
- 37%
Top 5 holders · of the whole company, between five filers
Details›
- Reporting quarter2026-03-31
- 2026Q1
- Quarters on record
- 13
- New positions
- 26
- Positions exited
- 41
- Added to
- 95
- Reduced
- 48
- Top 10 holdersof the company
- 55%
| Quarter | Filers | Shares | Reported value |
|---|---|---|---|
| 2026Q1 | 212 | 90.3M | $2.46B |
| 2025Q4 | 221 | 88.4M | $3.21B |
| 2025Q3 | 191 | 79.3M | $3.01B |
| 2025Q2 | 164 | 65.7M | $889M |
| 2025Q1 | 147 | 60.8M | $966M |
| 2024Q4 | 107 | 46.5M | $572M |
| 2024Q3 | 104 | 44.3M | $539M |
| 2024Q2 | 92 | 44.1M | $516M |
| 2024Q1 | 92 | 41.9M | $541M |
| 2023Q4 | 87 | 34.7M | $299M |
| 2023Q3 | 77 | 26.5M | $252M |
| 2023Q2 | 68 | 25.2M | $429M |
| 2023Q1 | 67 | 24.6M | $385M |
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Catalys Pacific, LLC | 7.9M | 9.5% | $214M |
| RA CAPITAL MANAGEMENT, L.P. | 7.7M | 9.3% | $208M |
| SAMSARA BIOCAPITAL, LLC | 5.9M | 7.1% | $159M |
| FMR LLC | 4.9M | 5.9% | $132M |
| BlackRock Inc. | 4.5M | 5.4% | $121M |
| VANGUARD GROUP INC | 3.6M | 4.4% | $98M |
| WELLINGTON MANAGEMENT GROUP LLP | 3.4M | 4.1% | $91M |
| STATE STREET CORP | 2.9M | 3.5% | $80M |
| Caligan Partners LP | 2.8M | 3.3% | $75M |
| Laurion Capital Management LP | 2.2M | 2.7% | $60M |
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.
reading the register…