Calamos Convertible Opportunities & Income Fund (CHI)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	D.a. Davidson & Co.	940,247	$9,016,970	0.07%
2.	Marathon Strategic Advisors, Llc	205,442	$1,970,186	2.12%
3.	Oppenheimer & Co Inc	171,779	$1,647,361	0.02%
4.	Total Wealth Planning & Management, Inc.	75,684	$725,810	0.69%
5.	Wealth Enhancement Advisory Services, Llc	57,314	$549,637	0%