| No. | Hedge Fund | Shares | Value | Activity | % Port |
|---|---|---|---|---|---|
| 1. | EcoR1 Capital Oleg Nodelman | 1,706,469 | $224,912,614 | 10.79% | |
| 2. | GoldenTree Asset Management Steven Tananbaum | 1,137,106 | $149,596,932 | 12.36% | |
| 3. | Renaissance Technologies Jim Simons | 924,874 | $121,898,393 | +3% | 0.16% |
| 4. | Citadel Investment Group Ken Griffin | 883,945 | $116,503,951 | +43% | 0.02% |
| 5. | GMT Capital Thomas E. Claugus | 792,800 | $104,491,040 | +4% | 4.74% |