Nuveen Municipal High Income Opportunity Fund (NMZ)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Morgan Stanley	2,610,415	$28,218,596	0%
2.	Ubs Group Ag	1,852,977	$20,030,681	0%
3.	Guggenheim Capital Llc	1,592,392	$17,213,758	0.13%
4.	Raymond James Financial Inc	869,938	$9,404,030	0%
5.	Wells Fargo & Company	752,536	$8,134,908	0%