Pinnacle West Capital Corp (PNW)

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Institutional Investors' Holdings

Filing Period: Filing is Ongoing

No.	Name	Shares	Value	% Port
1.	Vanguard Group Inc	14,464,661	$1,377,758,961	0.02%
2.	Blackrock, Inc.	10,813,340	$1,029,970,619	0.02%
3.	Massachusetts Financial Services Co	2,695,763	$256,771,427	0.09%
4.	Deutsche Bank Ag\	2,232,813	$212,675,439	0.08%
5.	Pictet Asset Management Holding Sa	1,789,346	$170,435,207	0.19%