IBB ETF

IBB ETF
$218.14
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IBB holds 51.2% of its assets in its 10 largest positions as of Oct 16, 2026. IBB is iShares Biotechnology ETF.

Showing the top 10 of 246 holdings · as of Oct 16, 2026
Top 10 weight
51.24%
IBB top 10 holdings, by weight
#TickerNameWeightCumulativeSharesMkt valueSectorIndustry
1
GILD
Gilead Sciences Inc
8.62%		8.6%5,912,876$907.86M--
2
AMGN
Amgen Inc.Health Care · Pharmaceuticals
8.14%		16.8%2,011,630$857.18MHealth CarePharmaceuticals
Sector and industry · Pro
3
VRTX
Vertex Pharmaceuticals Inc
7.52%		24.3%1,588,417$791.83M
4
MRNA
Moderna Inc
6.01%		30.3%2,796,024$632.74M
5
REGN
Regeneron Pharmaceuticals, Inc.
5.61%		35.9%758,513$590.40M
6
NTRA
Natera Inc
3.86%		39.8%1,030,429$406.76M
7—Argenx Se Sponsored Adr (1 Ads : 1 Ordinary)
3.31%		43.1%425,379$348.09M
8
ILMN
Illumina, Inc.
2.98%		46.0%1,152,661$313.25M
9
RVMD
Revolution Medicines Inc
2.71%		48.8%1,475,535$285.55M
10
BIIB
Biogen Inc.
2.48%		51.2%1,122,434$261.34M
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Themes in the top 10
BiotechnologyPharmaceuticalsOncologyLife Sciences ToolsBiotechnology ToolsImmunologyAging PopulationDigital Health

IBB ETF Top Holdings

IBB holdings top 10 positions. The top 10 holdings account for 51.2% of the fund, led by Gilead Sciences Inc at 8.6%, Amgen Inc. at 8.1%, Vertex Pharmaceuticals Inc at 7.5%.

IBB portfolio concentration is relatively high, with the top 10 representing 51.2% of total assets. The largest sector exposure is Health Care at 87.7%.

IBB sectors provide a detailed breakdown. IBB overlap shows how holdings compare to other funds in your portfolio.

Compare IBB

IBB vs SPYIBB vs QQQIBB vs VOOIBB vs VTIIBB vs IVVIBB vs SCHDIBB vs VYMIBB vs VXUS
Showing 10 of 246 holdingsTop 10 Weight: 51.24%
#TickerNameIndustryWeightAllocation
1GILDGilead Sciences IncUnknown8.62%
2AMGNAmgen Inc.Health Care8.14%
3VRTXVertex Pharmaceuticals IncHealth Care7.52%
4MRNAModerna IncHealth Care6.01%
5REGNRegeneron Pharmaceuticals, Inc.Health Care5.61%
6NTRANatera IncHealth Care3.86%
7ARGX:ASArgenx Se Sponsored Adr (1 Ads : 1 Ordinary)Health Care3.31%
8ILMNIllumina, Inc.Health Care2.98%
9RVMDRevolution Medicines IncHealth Care2.71%
10BIIBBiogen Inc.Health Care2.48%
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Holdings Distribution

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