| No. | Hedge Fund | Shares | Value | Activity | % Port |
|---|---|---|---|---|---|
| 1. | Tang Capital Management Kevin C. Tang | 4,151,194 | $143,797,360 | +5% | 5.54% |
| 2. | Madison Avenue Partners Eli Samaha | 2,195,775 | $76,061,646 | +17% | 4.54% |
| 3. | EcoR1 Capital Oleg Nodelman | 1,667,119 | $57,749,002 | +61% | 2.77% |
| 4. | Prosight Capital Lawrence Hawkins | 1,150,000 | $39,836,000 | -36% | 9.29% |
| 5. | Greenlight Capital David Einhorn | 482,746 | $16,722,321 | 0.66% |