Position changes disclosed in SEC Form 13F filings. These report a quarterly snapshot, not exact trade dates.
| Fund | Change | Quarter |
|---|---|---|
| ADAGE CAPITAL PARTNERS GP, L.L.C. | ADAGE CAPITAL PARTNERS GP, L.L.C. exited a position previously worth $22,155,027. | 2026-06-30 |
| EQT Fund Management S.a r.l. | EQT Fund Management S.a r.l. reduced this position by 39% ($156,888,817 -> $96,400,578). | 2026-06-30 |
| Pivotal bioVenture Partners Investment Advisor LLC | Pivotal bioVenture Partners Investment Advisor LLC reduced this position by 53% ($44,678,725 -> $20,891,688). | 2026-06-30 |
| WELLINGTON MANAGEMENT GROUP LLP | WELLINGTON MANAGEMENT GROUP LLP reduced this position by 80% ($29,334,008 -> $5,907,122). | 2026-06-30 |
| BRAIDWELL LP | BRAIDWELL LP opened a new position worth $11,570,118. | 2026-06-30 |
| CITADEL ADVISORS LLC | CITADEL ADVISORS LLC increased this position by 877% ($1,359,680 -> $13,282,120). | 2026-06-30 |
| EVENTIDE ASSET MANAGEMENT, LLC | EVENTIDE ASSET MANAGEMENT, LLC exited a position previously worth $11,433,700. | 2026-06-30 |
| Siren, L.L.C. | Siren, L.L.C. opened a new position worth $8,668,750. | 2026-06-30 |
Largest reported positions as of 2026-06-30.
| Fund | Value | Shares |
|---|---|---|
| EQT Fund Management S.a r.l. | $96,400,578 | 6,950,294 |
| Aberdeen Group plc | $29,956,551 | 2,159,809 |
| MILLENNIUM MANAGEMENT LLC | $28,329,017 | 2,042,467 |
| Pivotal bioVenture Partners Investment Advisor LLC | $20,891,688 | 1,506,250 |
| CITADEL ADVISORS LLC | $13,282,120 | 957,615 |
| BRAIDWELL LP | $11,570,118 | 834,183 |
| PERCEPTIVE ADVISORS LLC | $11,218,430 | 808,827 |
| Saturn V Capital Management LP | $9,499,286 | 684,880 |
| SR One Capital Management, LP | $8,890,975 | 641,022 |
| Siren, L.L.C. | $8,668,750 | 625,000 |
Data compiled from public SEC filings. This is informational reporting, not investment advice.
SR One Capital Management, LP is a healthcare-focused institutional investor whose equity holdings are disclosed each quarter through SEC Form 13F filings. This page tracks those disclosures over time, similar to how investors follow the largest hedge funds buying and selling names like UNH or watch a portfolio including cash evolve position by position. Each … Read more