Nuveen Municipal High Income Opportunity Fund (NMZ)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Morgan Stanley	2,697,905	$29,434,151	0%
2.	Ubs Group Ag	1,827,110	$19,933,770	0%
3.	Guggenheim Capital Llc	1,548,216	$16,891,037	0.16%
4.	Raymond James Financial Inc	999,795	$10,907,759	0%
5.	Wells Fargo & Company	803,412	$8,765,225	0%