Total Holdings
254
Portfolio diversification across 254 positions
IBB
(NASDAQ)iShares Biotechnology ETF
$178.09-- (--)
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
$7.84B
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 |  | Vertex Pharmaceuticals Incorporated | Stock | 7.54% |
| 2 |  | Gilead Sciences, Inc | Stock | 7.42% |
| 3 |  | Amgen Inc. | Stock | 7.40% |
| 4 |  | Regeneron Pharmaceuticals, Inc | Stock | 6.55% |
| 5 |  | argenx SE | Stock | 3.68% |
| 6 |  | Alnylam Pharmaceuticals, Inc | Stock | 3.63% |
| 7 |  | Insmed Incorporated | Stock | 2.72% |
| 8 |  | Natera, Inc. | Stock | 2.65% |
| 9 |  | Biogen Inc. | Stock | 2.62% |
| 10 |  | Revolution Medicines, Inc. | Stock | 2.47% |
| 11 |  | Illumina, Inc. | Stock | 2.23% |
| 12 |  | United Therapeutics Corporation | Stock | 2.22% |
| 13 |  | Moderna, Inc. | Stock | 1.83% |
| 14 |  | Incyte Corporation | Stock | 1.80% |
| 15 |  | BeOne Medicines AG | Stock | 1.71% |
| 16 |  | Neurocrine Biosciences, Inc. | Stock | 1.40% |
| 17 |  | Roivant Sciences Ltd. | Stock | 1.36% |
| 18 | C CO:GMAB | Genmab A/S | Stock | 1.20% |
| 19 |  | Exelixis, Inc. | Stock | 1.20% |
| 20 |  | Ionis Pharmaceuticals, Inc | Stock | 1.12% |
| 21 |  | Genmab A/S | Stock | 1.08% |
| 22 |  | BridgeBio Pharma, Inc | Stock | 1.05% |
| 23 |  | Axsome Therapeutics, Inc. | Stock | 0.99% |
| 24 |  | Ascendis Pharma A/S | Stock | 0.97% |
| 25 |  | Madrigal Pharmaceuticals, Inc | Stock | 0.96% |
| 26 |  | Medpace Holdings, Inc. | Stock | 0.96% |
| 27 |  | BioMarin Pharmaceutical Inc | Stock | 0.93% |
| 28 |  | Arrowhead Pharmaceuticals, Inc | Stock | 0.90% |
| 29 |  | Cytokinetics, Incorporated | Stock | 0.85% |
| 30 |  | Charles River Laboratories International, Inc | Stock | 0.83% |
| 31 |  | Bio-Techne Corporation | Stock | 0.80% |
| 32 |  | Praxis Precision Medicines, Inc | Stock | 0.80% |
| 33 |  | Vaxcyte, Inc | Stock | 0.72% |
| 34 |  | Halozyme Therapeutics, Inc | Stock | 0.70% |
| 35 |  | Krystal Biotech, Inc | Stock | 0.66% |
| 36 |  | Repligen Corporation | Stock | 0.61% |
| 37 |  | Protagonist Therapeutics Inc | Stock | 0.55% |
| 38 |  | Alkermes plc | Stock | 0.54% |
| 39 |  | Rhythm Pharmaceuticals, Inc | Stock | 0.54% |
| 40 |  | Kymera Therapeutics, Inc | Stock | 0.53% |
| 41 |  | Tempus AI, Inc. Class A Common Stock | Stock | 0.51% |
| 42 |  | Mirum Pharmaceuticals Inc | Stock | 0.51% |
| 43 |  | Xenon Pharmaceuticals Inc | Stock | 0.49% |
| 44 |  | PTC Therapeutics, Inc | Stock | 0.47% |
| 45 |  | Cogent Biosciences Inc | Stock | 0.46% |
| 46 |  | Nuvalent Inc | Stock | 0.44% |
| 47 |  | CRISPR Therapeutics AG | Stock | 0.43% |
| 48 |  | Spyre Therapeutics Inc. | Stock | 0.42% |
| 49 |  | Scholar Rock Holding Corp | Stock | 0.40% |
| 50 |  | Travere Therapeutics Inc | Stock | 0.37% |
Frequently Asked Questions About iShares Biotechnology ETF Holdings
What are the top holdings in IBB?
iShares Biotechnology ETF (IBB) holds 254 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 254 holdings, sector allocation, and geographic exposure. A well-diversified ETF spreads investments across multiple securities, sectors, and regions to reduce concentration risk.