<SEC-DOCUMENT>0001171471-15-000004-index.html : 20151229
<SEC-HEADER>0001171471-15-000004.hdr.sgml : 20151229
<ACCEPTANCE-DATETIME>20151229161416
ACCESSION NUMBER:		0001171471-15-000004
CONFORMED SUBMISSION TYPE:	NSAR-B
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20151031
FILED AS OF DATE:		20151229
DATE AS OF CHANGE:		20151229
EFFECTIVENESS DATE:		20151229

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND
		CENTRAL INDEX KEY:			0001171471
		IRS NUMBER:				030426532
		FISCAL YEAR END:			1031

	FILING VALUES:
		FORM TYPE:		NSAR-B
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-21080
		FILM NUMBER:		151311500

	BUSINESS ADDRESS:	
		STREET 1:		2020 CALAMOS COURT
		STREET 2:		C/O CALAMOS ADVISORS LLC
		CITY:			NAPERVILLE
		STATE:			IL
		ZIP:			60653
		BUSINESS PHONE:		6302451046

	MAIL ADDRESS:	
		STREET 1:		2020 CALAMOS COURT
		STREET 2:		C/O CALAMOS ADVISORS LLC
		CITY:			NAPERVILLE
		STATE:			IL
		ZIP:			60653
</SEC-HEADER>
<DOCUMENT>
<TYPE>NSAR-B
<SEQUENCE>1
<FILENAME>cvxbanswers.fil
<DESCRIPTION>CVXB ANSWERS 10.31.15
<TEXT>
Document 1 - file: cvxbanswers.fil

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.77B ACCT LTTR
<SEQUENCE>2
<FILENAME>CVXBExh77B.txt
<DESCRIPTION>CVXB AUDIT LETTER
<TEXT>
Document 2 - file: CVXBExh77B.txt

</DOCUMENT>
</SEC-DOCUMENT>