iShares Biotechnology ETF (IBB)

IBB Holdings List

As of May 9, 2025

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No.	Symbol	Name	% Weight	Shares
1	VRTX	Vertex Pharmaceuticals Incorporated	8.43%	998,503
2	AMGN	Amgen Inc.	8.21%	1,555,154
3	GILD	Gilead Sciences, Inc.	8.07%	4,191,056
4	REGN	Regeneron Pharmaceuticals, Inc.	6.89%	656,953
5	ALNY	Alnylam Pharmaceuticals, Inc.	3.85%	771,562
6	IQV	IQVIA Holdings Inc.	3.22%	1,086,652
7	ARGX	argenx SE	2.87%	262,615
8	MTD	Mettler-Toledo International Inc.	2.76%	128,326
9	WAT	Waters Corporation	2.52%	369,395
10	NTRA	Natera, Inc.	2.40%	796,192
11	BIIB	Biogen Inc.	2.13%	907,545
12	BNTX	BioNTech SE	1.87%	1,017,063
13	UTHR	United Therapeutics Corporation	1.64%	274,617
14	ONC	BeiGene, Ltd.	1.58%	342,521
15	ILMN	Illumina, Inc.	1.48%	982,375
16	INSM	Insmed Incorporated	1.42%	1,101,711
17	INCY	Incyte Corporation	1.39%	1,188,539
18	NBIX	Neurocrine Biosciences, Inc.	1.39%	603,508
19	BMRN	BioMarin Pharmaceutical Inc.	1.37%	1,173,795
20	EXEL	Exelixis, Inc.	1.22%	1,697,821
21	GMAB	Genmab A/S	1.11%	2,876,628
22	MRNA	Moderna, Inc.	1.03%	2,129,928
23	HALO	Halozyme Therapeutics, Inc.	0.99%	759,028
24	TECH	Bio-Techne Corporation	0.97%	974,275
25	MEDP	Medpace Holdings, Inc.	0.92%	155,755
26	CRL	Charles River Laboratories International, Inc.	0.87%	315,229
27	RVMD	Revolution Medicines, Inc.	0.81%	1,006,988
28	RGEN	Repligen Corporation	0.81%	329,523
29	ASND	Ascendis Pharma A/S	0.79%	261,875
30	BPMC	Blueprint Medicines Corporation	0.75%	391,011
31	MDGL	Madrigal Pharmaceuticals, Inc.	0.68%	116,014
32	BBIO	BridgeBio Pharma, Inc.	0.63%	930,759
33	IONS	Ionis Pharmaceuticals, Inc.	0.62%	964,264
34	TEM	Tempus AI, Inc.	0.59%	485,625
35	ALKS	Alkermes plc	0.59%	988,117
36	ROIV	Roivant Sciences Ltd.	0.58%	2,756,654
37	ADMA	ADMA Biologics, Inc.	0.56%	1,419,562
38	AXSM	Axsome Therapeutics, Inc.	0.53%	249,694
39	LEGN	Legend Biotech Corporation	0.50%	790,686
40	PCVX	Vaxcyte, Inc.	0.48%	779,771
41	BRKR	Bruker Corporation	0.48%	642,389
42	CYTK	Cytokinetics, Incorporated	0.45%	718,272
43	PTCT	PTC Therapeutics, Inc.	0.42%	479,394
44	SRPT	Sarepta Therapeutics, Inc.	0.40%	560,291
45	KRYS	Krystal Biotech, Inc.	0.40%	153,204
46	SWTX	SpringWorks Therapeutics, Inc.	0.40%	437,025
47	RYTM	Rhythm Pharmaceuticals, Inc.	0.40%	350,037
48	VRNA	Verona Pharma plc	0.40%	316,725
49	NUVL	Nuvalent, Inc.	0.38%	276,079
50	RNA	Avidity Biosciences, Inc.	0.38%	691,542

As of May 9, 2025

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