iShares Biotechnology ETF

1D
1W
1M
3M
YTD
1Y
5Y
ALL

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About IBB

IBB tracks the performance of a modified market-cap-weighted index of US biotechnology companies listed on US exchanges. 

Index-Tracked
NYSE Biotechnology TR USD
Index-TrackedNYSE Biotechnology TR USD
Category
Health
CategoryHealth
Number of holdings
258
Number of holdings258
Inception Date
Feb 5, 2001
Inception DateFeb 5, 2001

What's in this fund

Sectors

As of August 20, 2025
Healthcare100.00%

Top 10 Holdings (48.33% of total assets)

As of August 20, 2025
NameSymbol% Assets
Gilead SciencesGILD7.68%
AmgenAMGN7.32%
RegeneronREGN6.69%
Vertex PharmaceuticalsVRTX6.35%
Alnylam PharmaceuticalsALNY6.21%
IQVIA HoldingsIQV3.59%
Mettler-ToledoMTD2.96%
argenx SEARGX2.77%
Insmed IncorporatedINSM2.51%
NateraNTRA2.25%

IBB Key Statistics

AUM
5.71B
AUM5.71B
Price-Earnings ratio
-516.39
Price-Earnings ratio-516.39
30-Day yield
—
30-Day yield—
Average volume
1.51M
Average volume1.51M
High today
$141.62
High today$141.62
Low today
$139.29
Low today$139.29
Open price
$139.61
Open price$139.61
Volume
1.31M
Volume1.31M
52 Week high
$150.57
52 Week high$150.57
52 Week low
$107.43
52 Week low$107.43
Expense ratio
0.44
Expense ratio0.44
View Prospectus and Reports

Average Annual Return

All investments involve risks, including the loss of principal. Performance data represents past performance and is no guarantee of future results. Investment returns and principal value will fluctuate and are subject to market volatility. An investment, when redeemed, may be worth more or less than the original cost. Current performance may be lower or higher than the performance data quoted.