| 1 | CRSP | CRISPR Therapeutics AG | 2.20% |
| 2 | UTHR | United Therapeutics Corporation | 2.04% |
| 3 | ABBV | AbbVie Inc. | 1.96% |
| 4 | EXEL | Exelixis, Inc. | 1.95% |
| 5 | MRNA | Moderna, Inc. | 1.93% |
| 6 | REGN | Regeneron Pharmaceuticals, Inc. | 1.90% |
| 7 | NBIX | Neurocrine Biosciences, Inc. | 1.90% |
| 8 | IONS | Ionis Pharmaceuticals, Inc. | 1.87% |
| 9 | MDGL | Madrigal Pharmaceuticals, Inc. | 1.87% |
| 10 | VRTX | Vertex Pharmaceuticals Incorporated | 1.87% |
| 11 | EXAS | Exact Sciences Corporation | 1.86% |
| 12 | HALO | Halozyme Therapeutics, Inc. | 1.86% |
| 13 | AMGN | Amgen Inc. | 1.85% |
| 14 | BMRN | BioMarin Pharmaceutical Inc. | 1.84% |
| 15 | NTRA | Natera, Inc. | 1.83% |
| 16 | GILD | Gilead Sciences, Inc. | 1.83% |
| 17 | ALNY | Alnylam Pharmaceuticals, Inc. | 1.82% |
| 18 | BIIB | Biogen Inc. | 1.81% |
| 19 | RVMD | Revolution Medicines, Inc. | 1.81% |
| 20 | INCY | Incyte Corporation | 1.80% |
| 21 | INSM | Insmed Incorporated | 1.77% |
| 22 | BBIO | BridgeBio Pharma, Inc. | 1.76% |
| 23 | TGTX | TG Therapeutics, Inc. | 1.74% |
| 24 | RNA | Avidity Biosciences, Inc. | 1.67% |
| 25 | ROIV | Roivant Sciences Ltd. | 1.66% |
| View XBI holdings |