| No. | Hedge Fund | Shares | Value | Activity | % Port |
|---|---|---|---|---|---|
| 1. | EcoR1 Capital Oleg Nodelman | 22,970,388 | $288,278,369 | +34% | 17.06% |
| 2. | Rubric Capital Management David Rosen | 4,710,551 | $59,117,415 | +9% | 0.89% |
| 3. | Biotechnology Value Fund / BVF Inc Mark Lampert | 4,308,935 | $54,077,134 | 1.93% | |
| 4. | Redmile Group Jeremy Green | 4,150,627 | $52,090,369 | -14% | 5.54% |
| 5. | Prosight Capital Lawrence Hawkins | 1,309,904 | $16,439,295 | +37% | 4.01% |