| 1 | GILD | Gilead Sciences, Inc. | 9.12% |
| 2 | VRTX | Vertex Pharmaceuticals Incorporated | 8.77% |
| 3 | AMGN | Amgen Inc. | 8.00% |
| 4 | REGN | Regeneron Pharmaceuticals, Inc. | 6.48% |
| 5 | ALNY | Alnylam Pharmaceuticals, Inc. | 3.79% |
| 6 | ARGX | argenx SE | 2.94% |
| 7 | INSM | Insmed Incorporated | 2.85% |
| 8 | NTRA | Natera, Inc. | 2.62% |
| 9 | BIIB | Biogen Inc. | 2.28% |
| 10 | ONC | BeOne Medicines AG | 2.13% |
| 11 | ILMN | Illumina, Inc. | 1.86% |
| 12 | UTHR | United Therapeutics Corporation | 1.68% |
| 13 | INCY | Incyte Corporation | 1.68% |
| 14 | GMAB | Genmab A/S | 1.39% |
| 15 | RVMD | Revolution Medicines, Inc. | 1.38% |
| 16 | MRNA | Moderna, Inc. | 1.32% |
| 17 | NBIX | Neurocrine Biosciences, Inc. | 1.14% |
| 18 | MEDP | Medpace Holdings, Inc. | 1.14% |
| 19 | IONS | Ionis Pharmaceuticals, Inc. | 1.13% |
| 20 | BBIO | BridgeBio Pharma, Inc. | 1.10% |
| 21 | EXEL | Exelixis, Inc. | 0.93% |
| 22 | BMRN | BioMarin Pharmaceutical Inc. | 0.92% |
| 23 | ASND | Ascendis Pharma A/S | 0.91% |
| 24 | CRL | Charles River Laboratories International, Inc. | 0.88% |
| 25 | MDGL | Madrigal Pharmaceuticals, Inc. | 0.87% |
| View IBB holdings |
