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iShares Biotechnology ETF

Ticker: IBB ISIN: US4642875565
Add to portfolio Portfolio analysis in 2min
ETF Broad market exposure Concentrated top holdings
Morningstar
★★★
TER
0.45%
Fund size
$7.99B
Holdings
227
Top 10
43.8%
Issuer
iShares
$216.40 1.82%
Price as of 2026-08-25 · NASDAQ

Performance by timeframe

Rolling returns
1 Month +14.90%
6 Months +22.81%
1 Year +58.28%
5 Years +5.05% p.a.+27.93%
10 Years +8.91% p.a.+134.66%
Since inception +8.53% p.a.+672.39%
Calendar year returns
YTD +28.33%
2025 +27.98%
2024 -2.41%
2023 +3.76%
2022 -13.69%
2021 +0.95%

Key stats

AUM
7.99B
Expense ratio
0.45%
Holdings
227
1Y return
58.28%
Volatility (1Y)
21.66%
52-week range
116.21 - 179.51
Section 1

Fund overview

Fund profile data from fundamentals.

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.

Category Health
Issuer iShares
Domicile USA
Section 2

Exposure breakdown

Exposure breakdown shows how the fund is allocated across assets, sectors, regions, and size buckets.

Asset allocation

Stock US
92.85%
Stock non-US
6.55%
Cash
0.60%

Sectors

Healthcare
100.00%

Regions

North America
94.00%
Europe Developed
3.93%
United Kingdom
1.70%
Asia Emerging
0.17%
Asia Developed
0.11%
Australasia
0.09%

Market cap mix

Medium
37.84%
Small
24.36%
Big
22.60%
Micro
13.11%
Section 3

Top holdings

Concentrated top holdings

Top holdings show which underlying securities drive the fund most.

Gilead Sciences Inc
7.50%
Vertex Pharmaceuticals Inc
7.13%
Amgen Inc
7.07%
Regeneron Pharmaceuticals Inc
6.66%
Alnylam Pharmaceuticals Inc
3.59%
Natera Inc
2.67%
Biogen Inc
2.59%
Revolution Medicines Inc
2.27%
United Therapeutics Corporation
2.22%
BEIGENE ADS REPRESENTING LTD
2.08%
Section 4

Performance & risk

Historical return and risk indicators over fixed windows.

Returns

YTD return 77.00%
1M return 14.90%
6M return 22.81%
1Y return 58.28%
3Y return 9.41%
5Y return 27.93%
10Y return 7.43%

Risk

Volatility (1Y) 21.66%
Volatility (3Y) 17.09%
Sharpe ratio (3Y) 0.32
Beta 0.74
52-week range 116.21 - 179.51
Section 5

Portfolio characteristics

Broad diversification

Fund concentration and composition metrics from source fields.

Overview

Holdings count 227
Top 10 weight 43.78%
Expense ratio 0.45%
Fund size 7.99B
Turnover 13.00%
Avg. market cap 20.36K

Details

Instrument metadata and source update timestamps.

Symbol IBB
Name iShares Biotechnology ETF
Asset type ETF
Exchange NASDAQ
Currency USD
ISIN US4642875565
Country USA
Code + exchange IBB.NASDAQ
Last price date 2026-05-08
Fundamentals updated 2026-05-11

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