<SEC-DOCUMENT>0001839882-22-013781-index.html : 20220624 <SEC-HEADER>0001839882-22-013781.hdr.sgml : 20220624 <ACCEPTANCE-DATETIME>20220624162821 ACCESSION NUMBER: 0001839882-22-013781 CONFORMED SUBMISSION TYPE: N-CSRS PUBLIC DOCUMENT COUNT: 13 CONFORMED PERIOD OF REPORT: 20220430 FILED AS OF DATE: 20220624 DATE AS OF CHANGE: 20220624 EFFECTIVENESS DATE: 20220624 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: N-CSRS SEC ACT: 1940 Act SEC FILE NUMBER: 811-21080 FILM NUMBER: 221040453 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>N-CSRS <SEQUENCE>1 <FILENAME>chi-ncsrs_043022.htm <DESCRIPTION>CERTIFIED SEMI-ANNUAL SHAREHOLDER REPORT <TEXT> Document 1 - file: chi-ncsrs_043022.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.CERT <SEQUENCE>2 <FILENAME>ex99-cert.htm <DESCRIPTION>CERTIFICATIONS <TEXT> Document 2 - file: ex99-cert.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.906 CERT <SEQUENCE>3 <FILENAME>ex99-906cert.htm <DESCRIPTION>SECTION 906 CERTIFICATIONS <TEXT> Document 3 - file: ex99-906cert.htm
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</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>13 <FILENAME>chi-sar_043022img010.gif <DESCRIPTION>GRAPHIC <TEXT> Document 13 - file: chi-sar_043022img010.gif
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