iShares Biotechnology ETF (IBB)
NASDAQ: IBB · Real-Time Price · USD
168.93
-1.83 (-1.07%)
Dec 30, 2025, 11:26 AM EST - Market open

IBB Holdings Information

IBB is an equity ETF with a total of 267 individual holdings. The top holdings are Vertex Pharmaceuticals stock at 8.67%, Gilead Sciences at 8.05%, Amgen at 7.83%, Regeneron Pharmaceuticals at 6.89%, and Alnylam Pharmaceuticals at 4.51%.

Total Holdings
267
Top 10 Percentage
49.02%
Asset Class
Equity
ETF Category
Health
Assets
8.68B
PE Ratio
23.92

Sector Allocation

Top 25 Holdings

No.SymbolName WeightShares
1VRTXVertex Pharmaceuticals Incorporated8.67%1,612,549
2GILDGilead Sciences, Inc.8.05%5,556,399
3AMGNAmgen Inc.7.83%2,024,017
4REGNRegeneron Pharmaceuticals, Inc.6.89%755,726
5ALNYAlnylam Pharmaceuticals, Inc.4.51%969,109
6INSMInsmed Incorporated3.24%1,570,660
7ARGXargenx SE2.97%302,276
8NTRANatera, Inc.2.66%980,896
9BIIBBiogen Inc.2.25%1,093,755
10ONCBeOne Medicines AG1.96%539,999
11UTHRUnited Therapeutics Corporation1.83%310,209
12ILMNIllumina, Inc.1.74%1,109,172
13INCYIncyte Corporation1.69%1,450,288
14GMABGenmab A/S1.43%3,672,214
15NBIXNeurocrine Biosciences, Inc.1.22%725,006
16RVMDRevolution Medicines, Inc.1.16%1,234,540
17MEDPMedpace Holdings, Inc.1.11%168,771
18IONSIonis Pharmaceuticals, Inc.1.10%1,186,330
19BBIOBridgeBio Pharma, Inc.1.08%1,228,874
20MDGLMadrigal Pharmaceuticals, Inc.1.07%154,051
21EXELExelixis, Inc.1.04%1,939,203
22BMRNBioMarin Pharmaceutical Inc.0.98%1,413,762
23MRNAModerna, Inc.0.94%2,588,493
24RNAAvidity Biosciences, Inc.0.86%1,031,414
25CRLCharles River Laboratories International, Inc.0.86%363,218
Showing 25 of 267 holdings
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As of Dec 26, 2025