| 1 | VRTX | Vertex Pharmaceuticals Incorporated | 7.68% |
| 2 | GILD | Gilead Sciences, Inc. | 7.48% |
| 3 | AMGN | Amgen Inc. | 7.41% |
| 4 | REGN | Regeneron Pharmaceuticals, Inc. | 6.34% |
| 5 | ALNY | Alnylam Pharmaceuticals, Inc. | 4.64% |
| 6 | IQV | IQVIA Holdings Inc. | 3.17% |
| 7 | MTD | Mettler-Toledo International Inc. | 2.89% |
| 8 | NTRA | Natera, Inc. | 2.54% |
| 9 | ARGX | argenx SE | 2.52% |
| 10 | WAT | Waters Corporation | 2.47% |
| 11 | BIIB | Biogen Inc. | 2.17% |
| 12 | INSM | Insmed Incorporated | 2.12% |
| 13 | BNTX | BioNTech SE | 1.86% |
| 14 | ILMN | Illumina, Inc. | 1.69% |
| 15 | ONC | BeOne Medicines Ltd. | 1.66% |
| 16 | INCY | Incyte Corporation | 1.58% |
| 17 | UTHR | United Therapeutics Corporation | 1.46% |
| 18 | NBIX | Neurocrine Biosciences, Inc. | 1.42% |
| 19 | EXEL | Exelixis, Inc. | 1.33% |
| 20 | BMRN | BioMarin Pharmaceutical Inc. | 1.20% |
| 21 | MRNA | Moderna, Inc. | 1.10% |
| 22 | GMAB | Genmab A/S | 0.98% |
| 23 | TECH | Bio-Techne Corporation | 0.96% |
| 24 | BPMC | Blueprint Medicines Corporation | 0.93% |
| 25 | CRL | Charles River Laboratories International, Inc. | 0.86% |
| View IBB holdings |