iShares Biotechnology ETF (IBB) Holdings List

$210.71 +0.94 (+0.45%)

Closing price 09/28/2026 04:00 PM Eastern

Extended Trading

$210.74 +0.03 (+0.02%)

As of 09/28/2026 08:00 PM Eastern

What stocks does IBB hold?

The iShares Biotechnology ETF (IBB) has 248 holdings, with Gilead Sciences, Vertex Pharmaceuticals, and Amgen among its largest positions. The top 25 IBB holdings ordered by weight make up 69.24% of the total fund. IBB is an equity fund in the sector category that invests in publicly traded companies, focused on health care strategies within the North America region. This page includes a complete IBB stock holdings list ranked by weight, along with a full breakdown of sector, geographic, industry, and currency exposure.

Top 25 IBB Holdings

Rank	Company	Current Price	Weight	Shares Held
1	GILD Gilead Sciences	$152.21 +0.8%	8.16%	5,793,029
2	VRTX Vertex Pharmaceuticals	$527.67 +0.3%	7.65%	1,556,224
3	AMGN Amgen	$418.13 +0.8%	7.53%	1,970,848
4	REGN Regeneron Pharmaceuticals	$752.25 -4.5%	5.57%	743,141
5	MRNA Moderna	$197.28 -0.8%	5.02%	2,739,345
6	NTRA Natera	$411.77 -0.2%	3.88%	1,009,534
7	ARGX argenex	$972.25 +1.3%	3.77%	416,748
8	ILMN Illumina	$271.90 +0.7%	2.91%	1,129,288
9	RVMD Revolution Medicines	$201.74 -1.6%	2.72%	1,445,631
10	ALNY Alnylam Pharmaceuticals	$255.36 -0.2%	2.35%	1,000,201
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11	BIIB Biogen	$228.69 +0.5%	2.34%	1,099,691
12	ONC BeOne Medicines	$367.00 +1.7%	2.14%	630,869
13	INSM Insmed	$117.67 -0.1%	1.85%	1,613,113
14	INCY Incyte	$124.82 +0.8%	1.77%	1,506,822
15	UTHR United Therapeutics	$485.54 +2.1%	1.38%	310,886
16	GMAB Genmab A/S	$35.36 +0.1%	1.36%	4,154,438
17	ROIV Roivant Sciences	$36.98 +3.3%	1.34%	3,930,488
18	ASND Ascendis Pharma A/S	$230.05 +2.0%	1.00%	462,359
19	NBIX Neurocrine Biosciences	$140.44 +1.5%	0.99%	753,603
20	MEDP Medpace	$615.94 -0.5%	0.98%	168,513
21	EXEL Exelixis	$58.37 +0.4%	0.98%	1,799,054
22	CRL Charles River Laboratories International	$294.85 +0.7%	0.98%	354,023
23	HALO Halozyme Therapeutics	$112.89 -0.9%	0.91%	842,037
24	TWST Twist Bioscience	$179.60 -1.8%	0.83%	478,126
25	BMRN BioMarin Pharmaceutical	$59.46 -1.3%	0.83%	1,432,832

IBB Geographic Exposure

IBB's largest geographic exposure is United States at 94.1%, followed by Bermuda at 1.3%.

United States
94.1%
Bermuda
1.3%
Denmark
1.0%
Canada
1.0%
Ireland
0.6%
Switzerland
0.4%
Netherlands
0.3%
Israel
0.1%
Virgin Islands, British
0.1%
Jersey
0.1%
Other
0.3%

IBB Currency Exposure

IBB is exclusively exposed to USD.

USD
100.0%

IBB Sector Exposure

IBB's largest sector exposure is Health Care at 97.5%, followed by Energy at 0.1%.

Health Care
97.5%
Energy
0.1%

IBB Industry Exposure

IBB's largest industry exposure is Biotechnology at 82.5%, followed by Health Care Equipment & Supplies at 5.1%.

Biotechnology
82.5%
Health Care Equipment & Supplies
5.1%
Health Care Providers & Services
4.9%
Life Sciences Tools & Services
2.0%
Pharmaceuticals
1.9%
Diversified Consumer Services
1.0%
Renewable Energy
0.1%

IBB Sub-Industry Exposure

IBB's largest sub-industry exposure is Biotechnology at 77.2%, followed by Life Sciences Tools & Services at 7.7%.

Biotechnology
77.2%
Life Sciences Tools & Services
7.7%
Health Care Services
4.9%
Pharmaceuticals
2.8%
Health Care Equipment
0.4%
Renewable Energy Equipment
0.1%

IBB Coupon Exposure

IBB's largest coupon exposure is 0-2 at 99.9%, followed by 2-4 at 0.1%.

0-2
99.9%
2-4
0.1%

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MarketBeat tracks iShares Biotechnology ETF holdings and portfolio composition, last updated on 9/27/2026.

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iShares Biotechnology ETF (IBB) Holdings List