    <SEC-DOCUMENT>0001104659-25-124669-index.html : 20251229
    <SEC-HEADER>0001104659-25-124669.hdr.sgml : 20251229
    <ACCEPTANCE-DATETIME>20251229121025
    ACCESSION NUMBER:		0001104659-25-124669
    CONFORMED SUBMISSION TYPE:	N-CSR
    PUBLIC DOCUMENT COUNT:		51
    CONFORMED PERIOD OF REPORT:	20251031
    FILED AS OF DATE:		20251229
    DATE AS OF CHANGE:		20251229
    EFFECTIVENESS DATE:		20251229

    FILER:

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

    	FILING VALUES:
    		FORM TYPE:		N-CSR
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-21080
    		FILM NUMBER:		251607040

    	BUSINESS ADDRESS:
    		STREET 1:		2020 CALAMOS COURT
    		STREET 2:		C/O CALAMOS ADVISORS LLC
    		CITY:			NAPERVILLE
    		STATE:			IL
    		ZIP:			60563
    		BUSINESS PHONE:		6302451046

    	MAIL ADDRESS:
    		STREET 1:		2020 CALAMOS COURT
    		STREET 2:		C/O CALAMOS ADVISORS LLC
    		CITY:			NAPERVILLE
    		STATE:			IL
    		ZIP:			60563
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>N-CSR
    <SEQUENCE>1
    <FILENAME>tm2532074d2_ncsr.htm
    <DESCRIPTION>N-CSR
    <TEXT>
    Document 1 - file: tm2532074d2_ncsr.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CODEETH
    <SEQUENCE>2
    <FILENAME>tm2532074d2_ex99-codeeth.htm
    <DESCRIPTION>EXHIBIT 99.CODEETH
    <TEXT>
    Document 2 - file: tm2532074d2_ex99-codeeth.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CERT
    <SEQUENCE>3
    <FILENAME>tm2532074d2_ex99-cert.htm
    <DESCRIPTION>EXHIBIT 99.CERT
    <TEXT>
    Document 3 - file: tm2532074d2_ex99-cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(A)(3)(III)
    <SEQUENCE>4
    <FILENAME>tm2532074d1_ex99-xax3xiii.htm
    <DESCRIPTION>EXHIBIT 99.(A)(3)(III)
    <TEXT>
    Document 4 - file: tm2532074d1_ex99-xax3xiii.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(A)(3)(IV)
    <SEQUENCE>5
    <FILENAME>tm2532074d2_ex99-xax3xiv.htm
    <DESCRIPTION>EXHIBIT 99.(A)(3)(IV)
    <TEXT>
    Document 5 - file: tm2532074d2_ex99-xax3xiv.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.906 CERT
    <SEQUENCE>6
    <FILENAME>tm2532074d2_ex99-906cert.htm
    <DESCRIPTION>EXHIBIT 99.906 CERT
    <TEXT>
    Document 6 - file: tm2532074d2_ex99-906cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>7
    <FILENAME>ck0001171471-20251031.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
    <TEXT>
    Document 7 - file: ck0001171471-20251031.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>8
    <FILENAME>ck0001171471-20251031_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE
    <TEXT>
    Document 8 - file: ck0001171471-20251031_def.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>9
    <FILENAME>ck0001171471-20251031_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
    <TEXT>
    Document 9 - file: ck0001171471-20251031_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>10
    <FILENAME>ck0001171471-20251031_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
    <TEXT>
    Document 10 - file: ck0001171471-20251031_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>j25320747_aa001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: j25320747_aa001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>j25320747_aa002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: j25320747_aa002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>j25320747_aa003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: j25320747_aa003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>j25320747_aa004.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: j25320747_aa004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>j25320747_aa005.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: j25320747_aa005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>j25320747_ba006.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: j25320747_ba006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>j25320747_ba007.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: j25320747_ba007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>j25320747_ba008.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: j25320747_ba008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>j25320747_ca009.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: j25320747_ca009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>j25320747_ca010.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: j25320747_ca010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>j25320747_ca011.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: j25320747_ca011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>j25320747_ca012.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 22 - file: j25320747_ca012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>j25320747_ca013.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 23 - file: j25320747_ca013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>j25320747_ca014.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 24 - file: j25320747_ca014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>j25320747_ca015.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 25 - file: j25320747_ca015.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>j25320747_da016.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 26 - file: j25320747_da016.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>j25320747_da017.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 27 - file: j25320747_da017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>j25320747_da018.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 28 - file: j25320747_da018.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>29
    <FILENAME>j25320747_da019.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 29 - file: j25320747_da019.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>30
    <FILENAME>j25320747_da020.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 30 - file: j25320747_da020.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>31
    <FILENAME>j25320747_da021.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 31 - file: j25320747_da021.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>32
    <FILENAME>j25320747_dc022.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 32 - file: j25320747_dc022.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>33
    <FILENAME>j25320747_dc023.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 33 - file: j25320747_dc023.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>34
    <FILENAME>j25320747_dc024.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 34 - file: j25320747_dc024.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>35
    <FILENAME>j25320747_dc025.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 35 - file: j25320747_dc025.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>36
    <FILENAME>j25320747_de026.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 36 - file: j25320747_de026.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>37
    <FILENAME>j25320747_de027.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 37 - file: j25320747_de027.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>38
    <FILENAME>j25320747_de028.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 38 - file: j25320747_de028.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>39
    <FILENAME>j25320747_de029.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 39 - file: j25320747_de029.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>40
    <FILENAME>j25320747_ia030.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 40 - file: j25320747_ia030.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>41
    <FILENAME>j25320747_za031.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 41 - file: j25320747_za031.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>42
    <FILENAME>j25320747_za032.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 42 - file: j25320747_za032.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>43
    <FILENAME>tm2532074d2_ex99a34img01.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 43 - file: tm2532074d2_ex99a34img01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>45
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 45 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>46
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 46 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>47
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 47 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>49
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 49 - file: FilingSummary.html

    Document 49 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>51
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 51 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>52
    <FILENAME>0001104659-25-124669-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 52 - file: 0001104659-25-124669-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>53
    <FILENAME>tm2532074d2_ncsr_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 53 - file: tm2532074d2_ncsr_htm.html

    Document 53 - RAW XML: tm2532074d2_ncsr_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>