Based on notional value, the top 3 ETF holders of Costco Wholesale (COST) are QQQ ($9.9B), VOO ($7.5B) and IVV ($5.8B).

FUND	HOLDING	% OF FUND	VALUE ($)
QQQ	Costco Wholesale (COST)	2.168%	$9.9B
VOO	Costco Wholesale (COST)	0.79%	$7.5B
IVV	Costco Wholesale (COST)	0.725%	$5.8B
SPY	Costco Wholesale (COST)	0.726%	$5.5B
VTI	Costco Wholesale (COST)	0.7%	$4.5B
VUG	Costco Wholesale (COST)	1.48%	$3.2B
VIG	Costco Wholesale (COST)	2.12%	$2.2B
IWF	Costco Wholesale (COST)	1.441%	$1.8B
QQQM	Costco Wholesale (COST)	2.144%	$1.8B
XLP	Costco Wholesale (COST)	9.521%	$1.4B
VDC	Costco Wholesale (COST)	12.44%	$1B
SCHG	Costco Wholesale (COST)	1.663%	$932.2M
SPHQ	Costco Wholesale (COST)	4.839%	$833.3M
IVE	Costco Wholesale (COST)	1.579%	$779.5M
VONG	Costco Wholesale (COST)	1.6%	$682.7M
SPLG	Costco Wholesale (COST)	0.692%	$672.9M
QUAL	Costco Wholesale (COST)	1.311%	$656.7M
ITOT	Costco Wholesale (COST)	0.64%	$570.3M
JEPI	Costco Wholesale (COST)	1.248%	$562M
JEPQ	Costco Wholesale (COST)	1.473%	$556.7M
SPYV	Costco Wholesale (COST)	1.582%	$535.1M
SCHX	Costco Wholesale (COST)	0.692%	$473.2M
VRGWX	Costco Wholesale (COST)	1.6%	$420.5M
VV	Costco Wholesale (COST)	0.81%	$410.8M
IUSV	Costco Wholesale (COST)	1.492%	$382.3M

Holdings are tracked for approximately 2000 ETFs.