Total Holdings
252
Portfolio diversification across 252 positions
IBB
(NASDAQ)iShares Biotechnology ETF
$213.56-- (--)
Loading... - Market loading
IBB ETF Holdings: iShares Biotechnology ETF
Complete portfolio holdings with allocation weights, sector breakdown, and geographic exposure for this Equity ETF. Analyze fund diversification and concentration.
Assets Under Management
$9.47B
Total fund assets
Expense Ratio
0.44%
Annual management fee
Fund Issuer
BlackRock
Nasdaq Stock Market
Portfolio Allocations
Distribution breakdown by sector, asset type, and geographic region. Understand the fund's diversification strategy across markets and asset classes.
Loading chart...
Top 50 Holdings by Portfolio Weight
View ticker symbols, company names, asset types, and allocation percentages for each position
Scroll to see more
| # | Symbol | Name | Type | Weight |
|---|---|---|---|---|
| 1 |  | Amgen Inc. | Stock | 8.25% |
| 2 |  | Vertex Pharmaceuticals Incorporated | Stock | 7.91% |
| 3 |  | Gilead Sciences, Inc | Stock | 7.12% |
| 4 |  | Regeneron Pharmaceuticals, Inc | Stock | 5.36% |
| 5 |  | argenx SE | Stock | 3.77% |
| 6 |  | Natera, Inc | Stock | 2.87% |
| 7 |  | Alnylam Pharmaceuticals, Inc. | Stock | 2.86% |
| 8 |  | Revolution Medicines, Inc. | Stock | 2.85% |
| 9 |  | Biogen Inc. | Stock | 2.34% |
| 10 |  | Illumina, Inc. | Stock | 2.32% |
| 11 |  | BeOne Medicines AG | Stock | 2.05% |
| 12 |  | Incyte Corporation | Stock | 1.84% |
| 13 |  | Insmed Incorporated | Stock | 1.83% |
| 14 |  | United Therapeutics Corporation | Stock | 1.73% |
| 15 |  | Moderna, Inc | Stock | 1.70% |
| 16 |  | Roivant Sciences Ltd. | Stock | 1.43% |
| 17 |  | Neurocrine Biosciences, Inc | Stock | 1.39% |
| 18 |  | Ascendis Pharma AS | Stock | 1.24% |
| 19 |  | Genmab A/S | Stock | 1.19% |
| 20 |  | BridgeBio Pharma, Inc. | Stock | 1.12% |
| 21 |  | Medpace Holdings, Inc. | Stock | 1.09% |
| 22 |  | Exelixis, Inc | Stock | 1.08% |
| 23 |  | Madrigal Pharmaceuticals, Inc | Stock | 0.93% |
| 24 |  | Arrowhead Pharmaceuticals, Inc. | Stock | 0.90% |
| 25 |  | BioMarin Pharmaceutical Inc. | Stock | 0.89% |
| 26 |  | Bio-Techne Corporation | Stock | 0.88% |
| 27 |  | Charles River Laboratories International, Inc | Stock | 0.82% |
| 28 |  | Axsome Therapeutics, Inc | Stock | 0.80% |
| 29 |  | Cytokinetics, Incorporated | Stock | 0.76% |
| 30 |  | Halozyme Therapeutics, Inc | Stock | 0.73% |
| 31 |  | Krystal Biotech, Inc | Stock | 0.69% |
| 32 |  | Abivax SA American Depositary Shares | Stock | 0.68% |
| 33 |  | Ionis Pharmaceuticals, Inc | Stock | 0.68% |
| 34 |  | Alkermes plc | Stock | 0.68% |
| 35 |  | Protagonist Therapeutics Inc | Stock | 0.66% |
| 36 |  | BioNTech SE | Stock | 0.66% |
| 37 |  | Praxis Precision Medicines, Inc | Stock | 0.65% |
| 38 |  | Crinetics Pharmaceuticals Inc | Stock | 0.64% |
| 39 |  | Vaxcyte, Inc | Stock | 0.64% |
| 40 |  | Kymera Therapeutics, Inc | Stock | 0.63% |
| 41 |  | Spyre Therapeutics Inc. | Stock | 0.62% |
| 42 |  | Apogee Therapeutics, Inc. Common Stock | Stock | 0.60% |
| 43 |  | Repligen Corporation | Stock | 0.57% |
| 44 |  | Rhythm Pharmaceuticals, Inc | Stock | 0.56% |
| 45 |  | Bruker Corporation | Stock | 0.53% |
| 46 |  | PTC Therapeutics, Inc | Stock | 0.49% |
| 47 |  | Xenon Pharmaceuticals Inc | Stock | 0.48% |
| 48 |  | Cogent Biosciences Inc | Stock | 0.46% |
| 49 |  | Mirum Pharmaceuticals Inc | Stock | 0.46% |
| 50 |  | Twist Bioscience Corporation | Stock | 0.45% |
Frequently Asked Questions About iShares Biotechnology ETF Holdings
What are the top holdings in IBB?
iShares Biotechnology ETF (IBB) holds 252 securities. View the complete list of top holdings sorted by portfolio weight, showing each security's ticker symbol, company name, asset type, and allocation percentage.
How concentrated is IBB's portfolio?
Portfolio concentration is measured by the weight of top holdings. A concentrated portfolio has fewer large positions with higher individual weights, while a diversified portfolio distributes holdings more evenly. Review IBB's holdings table to analyze concentration risk.
What is IBB's sector allocation?
The Sector Allocation chart shows how IBB distributes investments across different industries like Technology, Healthcare, Financials, and more. This sector exposure helps understand the fund's industry diversification strategy.
What countries does IBB invest in?
IBB's geographic exposure is shown in the Countries tab under Portfolio Allocations. This reveals the fund's international diversification and exposure to different regions and global markets.
How diversified is IBB ETF?
IBB's diversification can be assessed by reviewing its 252 holdings, sector allocation, and geographic exposure. A well-diversified ETF spreads investments across multiple securities, sectors, and regions to reduce concentration risk.