Nuveen Municipal High Income Opportunity Fund (NMZ)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Morgan Stanley	1,934,119	$19,109,105	0%
2.	Ubs Group Ag	1,542,134	$15,236,284	0%
3.	Guggenheim Capital Llc	1,155,870	$11,419,996	0.08%
4.	Wells Fargo & Company	619,794	$6,123,568	0%
5.	Gridiron Partners, Llc	502,715	$4,966,824	3.5%