Institutional Holders (2026 Q1)
211 + investorsExplore institutional interest and hedge fund ownership dynamics. Analyze portfolio weights, new positions, and conviction trends in MLYS. Verified SEC 13F-HR filings.
| # | Investor | % of Portfolio | Shares | Mkt Value |
|---|---|---|---|---|
| 1 | Catalys Pacific, LLC | 92.81% | 7,903,838 | $214.1M |
| 2 | Andera Partners | 24.38% | 1,591,917 | $43.1M |
| 3 | Samsara BioCapital, LLC | 15.45% | 5,871,018 | $159.0M |
| 4 | 22nw, LP | 8.25% | 444,325 | $12.0M |
| 5 | Sphera Funds Management LTD. | 5.76% | 1,339,971 | $36.3M |
| 6 | Caligan Partners LP | 5.00% | 2,772,654 | $75.1M |
| 7 | Sr One Capital Management, LP | 4.63% | 1,563,966 | $42.4M |
| 8 | Buckley Capital Advisors, LLC | 3.37% | 173,100 | $4.7M |
| 9 | Davern Capital Partners, LP | 3.32% | 447,153 | $12.1M |
| 10 | Stempoint Capital LP | 2.81% | 533,378 | $14.4M |
| 11 | Laurion Capital Management LP | 2.64% | 2,232,040 | $60.5M |
| 12 | Catalio Capital Management, LP | 2.48% | 439,041 | $11.9M |
| 13 | Ra Capital Management, L.P. | 2.21% | 7,692,750 | $208.4M |
| 14 | Ishara Investments LP | 2.10% | 82,000 | $2.2M |
| 15 | Lion Point Capital, LP | 1.70% | 10,500 | $284K |
| 16 | Findell Capital Management LLC | 1.60% | 202,000 | $5.5M |
| 17 | Orbimed Advisors LLC | 1.10% | 2,052,900 | $55.6M |
| 18 | Troluce Capital Advisors LLC | 1.09% | 655,000 | $17.7M |
| 19 | Suvretta Capital Management, LLC | 1.06% | 1,538,662 | $41.7M |
| 20 | Parkman Healthcare Partners LLC | 1.06% | 380,137 | $10.3M |
| 21 | Affinity Asset Advisors, LLC | 1.05% | 750,000 | $20.3M |
| 22 | Integral Health Asset Management, LLC | 0.97% | 750,000 | $20.3M |
| 23 | Nantahala Capital Management, LLC | 0.89% | 895,481 | $24.3M |
| 24 | Rhenman & Partners Asset Management AB | 0.88% | 263,071 | $7.1M |
| 25 | Pale Fire Capital SE | 0.87% | 365,626 | $9.9M |
| Investor | Ownership History |
% of Portfolio | Prev % | Rank | Conviction | Avg Buy Price | 13F Score™ 3Y / 7Y | Sell Timing | Shares | Mkt Value | Change | Change % | Source | Quarter | Filed |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|