| 1 | RVMD | Revolution Medicines, Inc. | 2.54% |
| 2 | RNA | Avidity Biosciences, Inc. | 2.46% |
| 3 | INSM | Insmed Incorporated | 2.23% |
| 4 | REGN | Regeneron Pharmaceuticals, Inc. | 2.11% |
| 5 | MDGL | Madrigal Pharmaceuticals, Inc. | 2.10% |
| 6 | EXAS | Exact Sciences Corporation | 2.05% |
| 7 | NTRA | Natera, Inc. | 2.03% |
| 8 | BBIO | BridgeBio Pharma, Inc. | 2.00% |
| 9 | AMGN | Amgen Inc. | 1.99% |
| 10 | INCY | Incyte Corporation | 1.94% |
| 11 | UTHR | United Therapeutics Corporation | 1.94% |
| 12 | ROIV | Roivant Sciences Ltd. | 1.93% |
| 13 | BIIB | Biogen Inc. | 1.91% |
| 14 | IONS | Ionis Pharmaceuticals, Inc. | 1.88% |
| 15 | EXEL | Exelixis, Inc. | 1.83% |
| 16 | VRTX | Vertex Pharmaceuticals Incorporated | 1.81% |
| 17 | ABBV | AbbVie Inc. | 1.78% |
| 18 | GILD | Gilead Sciences, Inc. | 1.78% |
| 19 | MRNA | Moderna, Inc. | 1.65% |
| 20 | CRSP | CRISPR Therapeutics AG | 1.65% |
| 21 | BMRN | BioMarin Pharmaceutical Inc. | 1.60% |
| 22 | ALNY | Alnylam Pharmaceuticals, Inc. | 1.59% |
| 23 | NBIX | Neurocrine Biosciences, Inc. | 1.58% |
| 24 | PTCT | PTC Therapeutics, Inc. | 1.55% |
| 25 | VKTX | Viking Therapeutics, Inc. | 1.51% |
| View XBI holdings |