iShares Biotechnology ETF (IBB)
NASDAQ: IBB · Real-Time Price · USD
173.80
-0.34 (-0.20%)
At close: Feb 3, 2026, 4:00 PM EST
174.05
+0.25 (0.14%)
After-hours: Feb 3, 2026, 4:17 PM EST

IBB Holdings Information

IBB is an equity ETF with a total of 263 individual holdings. The top holdings are Gilead Sciences stock at 9.12%, Vertex Pharmaceuticals at 8.77%, Amgen at 8.00%, Regeneron Pharmaceuticals at 6.48%, and Alnylam Pharmaceuticals at 3.79%.

Total Holdings
263
Top 10 Percentage
48.98%
Asset Class
Equity
ETF Category
Health
Assets
8.63B
PE Ratio
24.11

Sector Allocation

Top 25 Holdings

No.SymbolName WeightShares
1GILDGilead Sciences, Inc.9.12%5,469,239
2VRTXVertex Pharmaceuticals Incorporated8.77%1,587,260
3AMGNAmgen Inc.8.00%1,992,260
4REGNRegeneron Pharmaceuticals, Inc.6.48%743,867
5ALNYAlnylam Pharmaceuticals, Inc.3.79%953,909
6ARGXargenx SE2.94%297,537
7INSMInsmed Incorporated2.85%1,546,031
8NTRANatera, Inc.2.62%965,506
9BIIBBiogen Inc.2.28%1,076,589
10ONCBeOne Medicines AG2.13%531,533
11ILMNIllumina, Inc.1.86%1,091,775
12UTHRUnited Therapeutics Corporation1.68%305,344
13INCYIncyte Corporation1.68%1,427,539
14GMABGenmab A/S1.39%3,614,590
15RVMDRevolution Medicines, Inc.1.38%1,215,185
16MRNAModerna, Inc.1.32%2,547,893
17NBIXNeurocrine Biosciences, Inc.1.14%713,636
18MEDPMedpace Holdings, Inc.1.14%166,115
19IONSIonis Pharmaceuticals, Inc.1.13%1,167,726
20BBIOBridgeBio Pharma, Inc.1.10%1,209,576
21EXELExelixis, Inc.0.93%1,908,810
22BMRNBioMarin Pharmaceutical Inc.0.92%1,391,585
23ASNDAscendis Pharma A/S0.91%340,614
24CRLCharles River Laboratories International, Inc.0.88%357,603
25MDGLMadrigal Pharmaceuticals, Inc.0.87%151,619
Showing 25 of 263 holdings
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As of Jan 30, 2026