| Amount | Holding |
|---|---|
| 4.14% | Acceleron Pharma Inc |
| 3.98% | Momenta Pharmaceuticals, Inc |
| 3.45% | Regeneron Pharmaceuticals, Inc |
| 3.39% | Ultragenyx Pharmaceutical Inc |
| 2.93% | Exelixis, Inc |
| 2.92% | Seattle Genetics, Inc |
| 2.81% | BioMarin Pharmaceutical Inc |
| 2.80% | Amicus Therapeutics, Inc |
| 2.78% | United Therapeutics Corporation |
| 2.77% | Vertex Pharmaceuticals Incorporated |