Calamos Convertible Opportunities & Income Fund (CHI)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Ubs Group Ag	1,871,008	$22,339,836	0.01%
2.	Wells Fargo & Company	1,772,538	$21,164,107	0%
3.	Morgan Stanley	1,372,950	$16,393,026	0%
4.	Bank Of America Corp	1,370,133	$16,359,384	0%
5.	D.a. Davidson & Co.	909,857	$10,863,703	0.08%