<SEC-DOCUMENT>0001171471-15-000004.txt : 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>
<PAGE>      PAGE  1
000 B000000 10/31/2015
000 C000000 0001171471
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 CALAMOS CONVERTIBLE OPPORTUNITIES&INCOME FUND
001 B000000 811-21080
001 C000000 6302457200
002 A000000 2020 CALAMOS COURT
002 B000000 NAPERVILLE
002 C000000 IL
002 D010000 60563
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 N
007 B000000  0
007 C010100  1
008 A000001 CALAMOS ADVISORS LLC
008 B000001 A
008 C000001 801-29688
008 D010001 NAPERVILLE
008 D020001 IL
008 D030001 60563
010 A000001 State Street Bank and Trust Company
010 B000001 028-00733
010 C010001 Boston
010 C020001 MA
010 C030001 02111
012 A000001 COMPUTERSHARE
012 B000001 85-05006
012 C010001 College Station
012 C020001 TX
012 C030001 77842
012 C040001 3170
013 A000001 Deloitte & Touche LLP
013 B010001 Chicago
013 B020001 IL
013 B030001 60606
014 A000001 CALAMOS FINANCIAL SERVICES LLC
014 B000001 8-37854
015 A000001 STATE STREET BANK & TRUST COMPANY
015 B000001 C
015 C010001 BOSTON
015 C020001 MA
015 C030001 02111
<PAGE>      PAGE  2
015 E010001 X
015 A000002 EUROCLEAR BANK
015 B000002 S
015 C010002 BRUSSELS
015 D010002 BELGIUM
015 E040002 X
018  000000 Y
019 A000000 Y
019 B000000   27
019 C000000 CALAMOSINV
020 A000001 SUSQUEHANNA INVESTMENTS
020 B000001 23-2626048
020 C000001     56
020 A000002 Deutsche Bank A.G.
020 B000002 13-2730828
020 C000002     31
020 A000003 MORGAN STANLEY &  CO., INC.
020 B000003 13-2655998
020 C000003     24
020 A000004 BARCLAYS CAPITAL INC.
020 B000004 94-3231066
020 C000004     12
020 A000005 CREDIT SUISSE FIRST BOSTON
020 B000005 13-2853402
020 C000005      7
020 A000006 JONESTRADING INSTITUTIONAL SERVICES LLC
020 B000006 51-0484896
020 C000006      6
020 A000007 INVESTMENT TECHNOLOGY GROUP, INC.
020 B000007 95-2848406
020 C000007      6
020 A000008 CITIGROUP, INC.
020 B000008 52-1568099
020 C000008      3
020 A000009 BTIG, LLC
020 B000009 04-3695739
020 C000009      3
020 A000010 GOLDMAN SACHS & CO.
020 B000010 13-5108880
020 C000010      0
021  000000      148
022 A000001 JPMORGAN CHASE SECURITIES INC.
022 B000001 13-3224016
022 C000001    100562
022 D000001     44104
022 A000002 CREDIT SUISSE FIRST BOSTON
022 B000002 13-2853402
022 C000002     72545
022 D000002     57644
022 A000003 JEFFERIES & COMPANY, INC.
022 B000003 95-2622900
<PAGE>      PAGE  3
022 C000003     65417
022 D000003     63115
022 A000004 BANK OF AMERICA
022 B000004 56-0906609
022 C000004     53980
022 D000004     52424
022 A000005 GOLDMAN SACHS & CO.
022 B000005 13-5108880
022 C000005     37824
022 D000005     24690
022 A000006 BARCLAYS CAPITAL INC.
022 B000006 94-3231066
022 C000006     25559
022 D000006     26991
022 A000007 WELLS FARGO SECURITIES, LLC
022 B000007 94-3379992
022 C000007     21897
022 D000007     27493
022 A000008 CITIGROUP, INC.
022 B000008 52-1568099
022 C000008      7830
022 D000008     25276
022 A000009 NOMURA SECURITIES INTERNATIONAL, INC.
022 B000009 13-2642206
022 C000009      6177
022 D000009      8670
022 A000010 MORGAN STANLEY &  CO., INC.
022 B000010 13-2655998
022 C000010     11941
022 D000010      2073
023 C000000     438531
023 D000000     374732
024  000000 Y
025 A000001 JEFFERIES & COMPANY, INC.
025 B000001 95-2622900
025 C000001 D
025 D000001    2800
026 A000000 N
026 B000000 Y
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027  000000 N
028 A010000         0
028 A020000         0
028 A030000         0
028 A040000         0
<PAGE>      PAGE  4
028 B010000         0
028 B020000         0
028 B030000         0
028 B040000         0
028 C010000         0
028 C020000         0
028 C030000         0
028 C040000         0
028 D010000         0
028 D020000         0
028 D030000         0
028 D040000         0
028 E010000         0
028 E020000         0
028 E030000         0
028 E040000         0
028 F010000         0
028 F020000         0
028 F030000         0
028 F040000         0
028 G010000         0
028 G020000         0
028 G030000         0
028 G040000         0
028 H000000         0
030 A000000      0
030 B000000  0.00
030 C000000  0.00
031 A000000      0
031 B000000      0
032  000000      0
033  000000      0
035  000000      0
036 B000000      0
038  000000      0
042 A000000   0
042 B000000   0
042 C000000   0
042 D000000   0
042 E000000   0
042 F000000   0
042 G000000   0
042 H000000   0
043  000000      0
044  000000      0
045  000000 Y
046  000000 N
047  000000 Y
048  000000  0.800
048 A010000        0
048 A020000 0.000
<PAGE>      PAGE  5
048 B010000        0
048 B020000 0.000
048 C010000        0
048 C020000 0.000
048 D010000        0
048 D020000 0.000
048 E010000        0
048 E020000 0.000
048 F010000        0
048 F020000 0.000
048 G010000        0
048 G020000 0.000
048 H010000        0
048 H020000 0.000
048 I010000        0
048 I020000 0.000
048 J010000        0
048 J020000 0.000
048 K010000        0
048 K020000 0.000
049  000000 N
050  000000 N
051  000000 N
052  000000 N
053 A000000 N
054 A000000 Y
054 B000000 Y
054 C000000 N
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 N
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 N
054 M000000 Y
054 N000000 N
054 O000000 N
055 A000000 N
055 B000000 Y
056  000000 Y
057  000000 N
058 A000000 N
059  000000 Y
060 A000000 Y
060 B000000 Y
061  000000        0
062 A000000 Y
062 B000000   0.1
<PAGE>      PAGE  6
062 C000000   0.0
062 D000000   0.0
062 E000000   0.0
062 F000000   0.0
062 G000000   0.0
062 H000000   0.0
062 I000000   0.0
062 J000000   0.0
062 K000000   0.2
062 L000000   0.0
062 M000000   0.0
062 N000000   0.0
062 O000000   0.0
062 P000000 112.5
062 Q000000   0.0
062 R000000  31.6
063 A000000   0
063 B000000  5.4
064 A000000 N
064 B000000 N
066 A000000 Y
066 B000000 N
066 C000000 N
066 D000000 N
066 E000000 N
066 F000000 N
066 G000000 Y
067  000000 N
068 A000000 N
068 B000000 N
069  000000 N
070 A010000 Y
070 A020000 N
070 B010000 Y
070 B020000 Y
070 C010000 Y
070 C020000 N
070 D010000 Y
070 D020000 N
070 E010000 Y
070 E020000 N
070 F010000 Y
070 F020000 N
070 G010000 Y
070 G020000 N
070 H010000 Y
070 H020000 N
070 I010000 Y
070 I020000 N
070 J010000 Y
070 J020000 Y
<PAGE>      PAGE  7
070 K010000 Y
070 K020000 Y
070 L010000 Y
070 L020000 Y
070 M010000 Y
070 M020000 Y
070 N010000 Y
070 N020000 Y
070 O010000 Y
070 O020000 Y
070 P010000 Y
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 Y
070 R020000 N
071 A000000    430549
071 B000000    466294
071 C000000   1196491
071 D000000   36
072 A000000 12
072 B000000    49739
072 C000000    10016
072 D000000        0
072 E000000      123
072 F000000     9992
072 G000000        0
072 H000000        0
072 I000000       28
072 J000000       37
072 K000000        0
072 L000000      141
072 M000000       73
072 N000000       15
072 O000000     2532
072 P000000     2990
072 Q000000      222
072 R000000       59
072 S000000      132
072 T000000        0
072 U000000        0
072 V000000        0
072 W000000      108
072 X000000    16329
072 Y000000        0
072 Z000000    43549
072AA000000    15146
072BB000000      866
072CC010000        0
072CC020000   101817
072DD010000    56919
<PAGE>      PAGE  8
072DD020000        0
072EE000000     1309
073 A010000   0.8100
073 A020000   0.0000
073 B000000   0.0200
073 C000000   0.3100
074 A000000        0
074 B000000        0
074 C000000      700
074 D000000   919512
074 E000000   192924
074 F000000     5232
074 G000000     1486
074 H000000        0
074 I000000    60529
074 J000000    11630
074 K000000        0
074 L000000    10857
074 M000000      217
074 N000000  1203087
074 O000000    30611
074 P000000     1011
074 Q000000   353000
074 R010000        0
074 R020000        0
074 R030000        0
074 R040000      973
074 S000000        0
074 T000000   817492
074 U010000    69997
074 U020000        0
074 V010000    11.68
074 V020000     0.00
074 W000000   0.0000
074 X000000       92
074 Y000000   673521
075 A000000        0
075 B000000   886144
076  000000    10.41
077 A000000 Y
077 B000000 Y
077 C000000 N
077 D000000 N
077 E000000 N
077 F000000 N
077 G000000 N
077 H000000 N
077 I000000 N
077 J000000 N
077 K000000 N
077 L000000 N
<PAGE>      PAGE  9
077 M000000 N
077 N000000 N
077 O000000 N
077 P000000 N
077 Q010000 N
077 Q020000 N
077 Q030000 N
078  000000 N
080 A000000 ICI MUTUAL INSURANCE COMPANY
080 C000000    15000
081 A000000 Y
081 B000000  39
082 A000000 Y
082 B000000      100
083 A000000 N
083 B000000        0
084 A000000 N
084 B000000        0
085 A000000 Y
085 B000000 N
086 A010000      0
086 A020000      0
086 B010000      0
086 B020000      0
086 C010000      0
086 C020000      0
086 D010000      0
086 D020000      0
086 E010000      0
086 E020000      0
086 F010000      0
086 F020000      0
087 A010000 Common stock
087 A020000 128117108
087 A030000 CHI
088 A000000 N
088 B000000 N
088 C000000 Y
088 D000000 N
SIGNATURE   CURTIS HOLLOWAY
TITLE       TREASURER

</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.77B ACCT LTTR
<SEQUENCE>2
<FILENAME>CVXBExh77B.txt
<DESCRIPTION>CVXB AUDIT LETTER
<TEXT>
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Shareholders and Board of Trustees of Calamos Convertible
 Opportunities and Income Fund
In planning and performing our audit of the financial statements of Calamos
 Convertible Opportunities and Income Fund (the Fund) as of and for the year
 ended October 31, 2015 in accordance with the standards of the Public Company
 Accounting Oversight Board (United States), we considered the Funds internal
 control over financial reporting, including controls over safeguarding
 securities, as a basis for designing our auditing procedures for the purpose
 of expressing our opinion on the financial statements and to comply with the
 requirements of Form N-SAR, but not for the purpose of expressing an opinion
 on the effectiveness of the Funds internal control over financial reporting.
 Accordingly, we express no such opinion.
The management of the Fund is responsible for establishing and maintaining
 effective internal control over financial reporting. In fulfilling this
 responsibility, estimates and judgments by management are required to assess
 the expected benefits and related costs of controls. A companys internal
control over financial reporting is a process designed to provide reasonable
 assurance regarding the reliability of financial reporting and the
preparation of financial statements for external purposes in accordance with
 generally accepted accounting principles. A companys internal control over
financial reporting includes those policies and procedures that (1) pertain
 to the maintenance of records that, in reasonable detail, accurately and
fairly reflect the transactions and dispositions of the assets of the
company; (2) provide reasonable assurance that transactions are recorded
as necessary to permit preparation of financial statements in accordance
with generally accepted accounting principles, and that receipts and
expenditures of the company are being made only in accordance with
authorizations of management and directors of the company; and (3) provide
 reasonable assurance regarding prevention or timely detection of
unauthorized acquisition, use, or disposition of a companys assets that
could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial
 reporting may not prevent or detect misstatements. Also, projections of any
 evaluation of effectiveness to future periods are subject to the risk that
controls may become inadequate because of changes in conditions or that the
degree of compliance with the policies or procedures may deteriorate.
A deficiency in internal control over financial reporting exists when the
design or operation of a control does not allow management or employees,
in the normal course of performing their assigned functions, to prevent or
detect misstatements on a timely basis. A material weakness is a deficiency,
 or a combination of deficiencies, in internal control over financial
reporting, such that there is a reasonable possibility that a material
misstatement of the companys annual or interim financial statements will
not be prevented or detected on a timely basis.
Our consideration of the Funds internal control over financial reporting
 was for the limited purpose described in the first paragraph and would not
 necessarily disclose all deficiencies in internal control that might be
material weaknesses under standards established by the Public Company
Accounting Oversight Board (United States). However, we noted no deficiencies
 in the Funds internal control over financial reporting and its operation,
 including controls for safeguarding securities, that we consider to be a
material weakness, as defined above, as of October 31, 2015.
This report is intended solely for the information and use of management and
 the Board of Trustees of Calamos Convertible Opportunities and Income Fund
and the Securities and Exchange Commission and is not intended to be and
 should not be used by anyone other than these specified parties.
/s/ DELOITTE & TOUCHE LLP
Chicago, Illinois
December 16, 2015

</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
