| No. | Hedge Fund | Shares | Value | Activity | % Port |
|---|---|---|---|---|---|
| 1. | EcoR1 Capital Oleg Nodelman | 22,970,388 | $392,334,227 | 18.83% | |
| 2. | Rubric Capital Management David Rosen | 4,710,551 | $80,456,211 | 0.91% | |
| 3. | Biotechnology Value Fund / BVF Inc Mark Lampert | 3,938,641 | $67,271,988 | -9% | 2.73% |
| 4. | Redmile Group Jeremy Green | 3,705,750 | $63,294,210 | -11% | 6.16% |
| 5. | Perceptive Advisors Joseph Edelman | 2,090,663 | $35,708,524 | +64% | 1.03% |