| 1 | VRTX | Vertex Pharmaceuticals Incorporated | 8.37% |
| 2 | GILD | Gilead Sciences, Inc. | 8.21% |
| 3 | AMGN | Amgen Inc. | 8.09% |
| 4 | REGN | Regeneron Pharmaceuticals, Inc. | 7.46% |
| 5 | ALNY | Alnylam Pharmaceuticals, Inc. | 4.21% |
| 6 | IQV | IQVIA Holdings Inc. | 2.97% |
| 7 | ARGX | argenx SE | 2.84% |
| 8 | MTD | Mettler-Toledo International Inc. | 2.84% |
| 9 | WAT | Waters Corporation | 2.54% |
| 10 | NTRA | Natera, Inc. | 2.32% |
| 11 | BIIB | Biogen Inc. | 2.18% |
| 12 | BNTX | BioNTech SE | 1.80% |
| 13 | UTHR | United Therapeutics Corporation | 1.60% |
| 14 | ILMN | Illumina, Inc. | 1.57% |
| 15 | ONC | BeiGene, Ltd. | 1.49% |
| 16 | EXEL | Exelixis, Inc. | 1.47% |
| 17 | INCY | Incyte Corporation | 1.44% |
| 18 | INSM | Insmed Incorporated | 1.43% |
| 19 | NBIX | Neurocrine Biosciences, Inc. | 1.40% |
| 20 | BMRN | BioMarin Pharmaceutical Inc. | 1.33% |
| 21 | GMAB | Genmab A/S | 1.09% |
| 22 | MRNA | Moderna, Inc. | 1.01% |
| 23 | TECH | Bio-Techne Corporation | 0.91% |
| 24 | MEDP | Medpace Holdings, Inc. | 0.91% |
| 25 | CRL | Charles River Laboratories International, Inc. | 0.85% |
| View IBB holdings |