Expense Ratio
The annual fee the ETF charges, deducted daily from NAV. A 0.05% ratio costs you $5/year per $10,000 invested, over 30 years that's the difference between a great fund and a mediocre one.
Learn more →iShares Biotechnology ETF
IBBBlackRock (iShares)Equity
AI Agents
NAV
$168.95
Net Assets
-
Expense Ratio
0.44%
YTD
+0.16%
1Y
+32.35%
3Y CAGR
+9.63%
5Y CAGR
+2.62%
The fund generally will invest at least 80% of its assets in the component securities of its underlying index and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents. It is non-diversified.
Price History1,255 daily observations
Price History▲ 34.66% over 1Y
Returns PerformanceTrailing total returns
| YTD | 1Y | 3Y CAGR | 5Y CAGR |
|---|---|---|---|
| +0.16% | +32.35% | +9.63% | +2.62% |
Expense Ratio
Net (after waivers)0.44%
Gross (before waivers)0.44%
Net expense ratio reflects fee waivers and reimbursements actually paid by investors. Gross is the full management cost.
Sector Allocation2 sectors
Healthcare61.09%
Unclassified Equity38.94%
Top 10 Holdings ConcentrationWhat share of the fund the largest 10 positions occupy
Top 10 Weight
45.2%
Total Holdings
258
Verdict
moderately concentrated
Top Holdings200 of 258 loaded
💡Reading the Holdings Table
The Weight column shows how much of the ETF's assets sit in each constituent. The Allocation bar scales each weight to the largest position so you can see relative concentration at a glance, and the Cumul. column tracks the running total, a fast read on how top-heavy this ETF is. The top 10 holdings account for 45.2% of assets. Click any constituent name to open its US stock detail page.
📖 Learn: Diversification & Asset Allocation →| # | Holding | Sector | Allocation | Weight | Cumul. |
|---|---|---|---|---|---|
| 1 | AMGEN INCAMGN | Healthcare | 7.25% | 7.3% | |
| 2 | GILEAD SCIENCES INCGILD | Healthcare | 7.10% | 14.3% | |
| 3 | VERTEX PHARMACEUTICALS INCVRTX | Healthcare | 7.10% | 21.4% | |
| 4 | REGENERON PHARMACEUTICALS INCREGN | Healthcare | 6.95% | 28.4% | |
| 5 | ALNYLAM PHARMACEUTICALS INCALNY | Healthcare | 3.72% | 32.1% | |
| 6 | ARGENX SE ADRARGX | Healthcare | 3.29% | 35.4% | |
| 7 | INSMED INCINSM | Healthcare | 2.66% | 38.1% | |
| 8 | NATERA INCNTRA | Healthcare | 2.47% | 40.5% | |
| 9 | BIOGEN INCBIIB | Healthcare | 2.43% | 43.0% | |
| 10 | UNITED THERAPEUTICS CORPUTHR | Unclassified Equity | 2.20% | 45.2% | |
| 11 | REVOLUTION MEDICINES INCRVMD | Healthcare | 2.08% | 47.2% | |
| 12 | BEONE MEDICINES AGONC | Unclassified Equity | 1.95% | 49.2% | |
| 13 | ILLUMINA INCILMN | Unclassified Equity | 1.75% | 50.9% | |
| 14 | INCYTE CORPINCY | Unclassified Equity | 1.73% | 52.7% | |
| 15 | MODERNA INCMRNA | Healthcare | 1.61% | 54.3% | |
| 16 | ROIVANT SCIENCES LTDROIV | Healthcare | 1.25% | 55.5% | |
| 17 | GENMAB SPONSORED ADRGMAB | Healthcare | 1.17% | 56.7% | |
| 18 | NEUROCRINE BIOSCIENCES INCNBIX | Unclassified Equity | 1.15% | 57.9% | |
| 19 | BRIDGEBIO PHARMA INCBBIO | Unclassified Equity | 1.14% | 59.0% | |
| 20 | IONIS PHARMACEUTICALS INCIONS | Healthcare | 1.07% | 60.1% | |
| Total (top 20) | 60.1% | ||||
Check Holdings Overlap
Sign in to see if this ETF's holdings overlap with stocks already in your portfolio. Knowing your total exposure helps avoid accidental over-concentration.
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$
You invest
$10,000
Estimated gain
$2,952
Final value
$12,952
Projections assume returns compound at the chosen CAGR consistently for 10 years, actual returns will vary year-to-year. Past performance is not a guarantee of future results.
Key Concepts to UnderstandFive things that drive ETF performance more than anything else
Net Assets (AUM)
Total money the ETF manages. Larger AUM usually means tighter bid-ask spreads and lower closure risk. ETFs under $50M are sometimes liquidated by the issuer.
Learn more →NAV
Net Asset Value, the per-share value of everything the ETF owns minus what it owes, calculated end-of-day. The trading price can drift slightly above (premium) or below (discount) NAV during the day.
Learn more →Tracking Error
How closely the ETF's returns match its benchmark. Index ETFs aim for near-zero tracking error; high tracking error in an index fund usually signals fees, sampling, or poor management.
Learn more →Total Return
Capital gain + reinvested dividends. The headline price chart only shows the price part, total return is what you actually pocket, and is the only fair way to compare ETFs across asset classes.
Learn more →Similar ETFs
About This ETF
Provider
BlackRock (iShares)
Asset Class
Equity
Top Sector
Healthcare (61.1%)
The fund generally will invest at least 80% of its assets in the component securities of its underlying index and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents. It is non-diversified.
US ETF data is for educational purposes only. Past performance does not guarantee future returns. Exchange-traded funds carry market risk and may lose value. Read the prospectus and consult a registered investment advisor before investing. Equiscale does not provide investment advice.