IBB Fair Value: Look-Through Valuation
Weighted by holding size, the model fair values of IBB's covered holdings sit 4.8% below their current prices (a look-through model estimate across 67% of the fund, under stated assumptions). Data as of 2026-10-22. Net assets $11.2B; holdings as of 2026-10-22.
Top 25 holdings of 227
| Holding | Weight | Price | Model fair value | Gap |
|---|---|---|---|---|
| GILD Gilead Sciences Inc | 8.05% | $157.19 | $146.56 | -6.8% |
| AMGN Amgen Inc | 7.63% | $447.28 | $446.49 | -0.2% |
| VRTX Vertex Pharmaceuticals Inc | 7.54% | $535.17 | $492.46 | -8.0% |
| REGN Regeneron Pharmaceuticals Inc | 5.25% | $819.09 | $1024.52 | +25.1% |
| MRNA Moderna Inc | 5.00% | — | Not covered | — |
| NTRA Natera Inc | 3.98% | $401.37 | $343.38 | -14.4% |
| ARGX argenx NV ADR | 3.68% | $875.76 | $879.29 | +0.4% |
| ILMN Illumina Inc | 2.96% | $269.40 | $234.56 | -12.9% |
| RVMD Revolution Medicines Inc | 2.87% | — | Not covered | — |
| BIIB Biogen Inc | 2.32% | $253.84 | $220.75 | -13.0% |
| ONC BeiGene, Ltd. | 2.17% | $382.27 | $258.78 | -32.3% |
| ALNY Alnylam Pharmaceuticals Inc | 2.11% | $227.28 | $220.56 | -3.0% |
| INSM Insmed Inc | 1.72% | — | Not covered | — |
| INCY Incyte Corporation | 1.67% | $116.93 | $194.25 | +66.1% |
| UTHR United Therapeutics Corporation | 1.62% | $584.79 | $468.65 | -19.9% |
| GMAB Genmab AS | 1.39% | $40.00 | $43.74 | +9.3% |
| ROIV ROIVANT SCIENCES LTD ORDINARY SHARES | 1.35% | — | Not covered | — |
| NBIX Neurocrine Biosciences Inc | 1.04% | $143.29 | $132.60 | -7.5% |
| EXEL Exelixis Inc | 1.01% | $65.31 | $76.32 | +16.9% |
| ASND Ascendis Pharma AS | 1.01% | — | Not covered | — |
| CRL Charles River Laboratories | 0.99% | $339.66 | $255.67 | -24.7% |
| MEDP Medpace Holdings Inc | 0.97% | $653.96 | $561.97 | -14.1% |
| HALO Halozyme Therapeutics Inc | 0.89% | $124.54 | $84.01 | -32.5% |
| TWST Twist Bioscience Corp | 0.87% | — | Not covered | — |
| BBIO BridgeBio Pharma Inc | 0.85% | — | Not covered | — |
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