| 1 | SRRK | Scholar Rock Holding Corporation | 4.52% |
| 2 | ACAD | ACADIA Pharmaceuticals Inc. | 4.41% |
| 3 | NBIX | Neurocrine Biosciences, Inc. | 4.39% |
| 4 | KRX: 326030 | SK Biopharmaceuticals Co., Ltd. | 4.39% |
| 5 | XENE | Xenon Pharmaceuticals Inc. | 4.33% |
| 6 | DNLI | Denali Therapeutics Inc. | 4.24% |
| 7 | BIIB | Biogen Inc. | 4.13% |
| 8 | ARGX | argenx SE | 4.13% |
| 9 | PTCT | PTC Therapeutics, Inc. | 4.06% |
| 10 | SUPN | Supernus Pharmaceuticals, Inc. | 4.00% |
| 11 | ALKS | Alkermes plc | 3.93% |
| 12 | HLUNB.CO | H. LUNDBECK CLASS B | 3.60% |
| 13 | CPRX | Catalyst Pharmaceuticals, Inc. | 3.60% |
| 14 | BHVN | Biohaven Ltd. | 3.09% |
| 15 | STO: DYVOX | Dynavox Group AB (publ) | 2.72% |
| 16 | EWTX | Edgewise Therapeutics, Inc. | 2.67% |
| 17 | TYO: 4592 | SanBio Company Limited | 2.55% |
| 18 | ASX: NEU | Neuren Pharmaceuticals Limited | 2.15% |
| 19 | DYN | Dyne Therapeutics, Inc. | 2.14% |
| 20 | AVDL | Avadel Pharmaceuticals plc | 2.01% |
| 21 | PRAX | Praxis Precision Medicines, Inc. | 1.91% |
| 22 | IART | Integra LifeSciences Holdings Corporation | 1.88% |
| 23 | AVXL | Anavex Life Sciences Corp. | 1.88% |
| 24 | STO: BIOA.B | BioArctic AB (publ) | 1.76% |
| 25 | SRPT | Sarepta Therapeutics, Inc. | 1.75% |
| View IBRN holdings |