The top 3 holdings of XBI are EXACT Sciences (EXAS) (3.215%), Alnylam Pharmaceuticals (ALNY) (3.102%) and Neurocrine Biosciences (NBIX) (2.906%).

FUND	HOLDING	% OF FUND	VALUE ($)
XBI	EXACT Sciences (EXAS)	3.215%	$156.5M
XBI	Alnylam Pharmaceuticals (ALNY)	3.102%	$151M
XBI	Neurocrine Biosciences (NBIX)	2.906%	$141.4M
XBI	Natera (NTRA)	2.757%	$134.2M
XBI	United Therapeutics (UTHR)	2.599%	$126.5M
XBI	Incyte (INCY)	2.485%	$120.9M
XBI	Gilead Sciences (GILD)	2.468%	$120.1M
XBI	Blueprint Medicines (BPMC)	2.44%	$118.7M
XBI	Exelixis (EXEL)	2.435%	$118.5M
XBI	Biogen (BIIB)	2.401%	$116.8M
XBI	Insmed (INSM)	2.385%	$116.1M
XBI	Vertex Pharmaceuticals (VRTX)	2.327%	$113.2M
XBI	Regeneron Pharmaceuticals (REGN)	2.299%	$111.9M
XBI	Amgen (AMGN)	2.269%	$110.4M
XBI	AbbVie (ABBV)	2.247%	$109.4M
XBI	Madrigal Pharmaceuticals (MDGL)	2.088%	$101.6M
XBI	Moderna (MRNA)	2.061%	$100.3M
XBI	Biomarin Pharmaceutical (BMRN)	1.872%	$91.1M
XBI	BridgeBio Pharma (BBIO)	1.625%	$79.1M
XBI	Revolution Medicines (RVMD)	1.577%	$76.7M
XBI	TG Therapeutics (TGTX)	1.539%	$74.9M
XBI	Ionis Pharmaceuticals (IONS)	1.449%	$70.5M
XBI	Halozyme Therapeutics (HALO)	1.416%	$68.9M
XBI	Crispr Therapeutics (CRSP)	1.367%	$66.5M
XBI	Summit Therapeutics (SMMT)	1.336%	$65M

Holdings are tracked for approximately 2000 ETFs.