<SEC-DOCUMENT>0000950123-11-104507.txt : 20111229
<SEC-HEADER>0000950123-11-104507.hdr.sgml : 20111229
<ACCEPTANCE-DATETIME>20111229153410
ACCESSION NUMBER:		0000950123-11-104507
CONFORMED SUBMISSION TYPE:	NSAR-B
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20111031
FILED AS OF DATE:		20111229
DATE AS OF CHANGE:		20111229
EFFECTIVENESS DATE:		20111229

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:		111286542

	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>answer.fil
<DESCRIPTION>ANSWER FILE
<TEXT>
<PAGE>      PAGE  1
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001 A000000 CALAMOS CONVERTIBLE OPPORTUNITIES&INCOME FUND
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002 A000000 2020 CALAMOS COURT
002 B000000 NAPERVILLE
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<PAGE>      PAGE  4
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SIGNATURE   CURTIS HOLLOWAY
TITLE       TREASURER

</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.77B ACCT LTTR
<SEQUENCE>2
<FILENAME>c66517ex77b.txt
<DESCRIPTION>EX-99.77B
<TEXT>
<PAGE>
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, 2011, in accordance with the standards of the Public Company
Accounting Oversight Board (United States), we considered the Fund's 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 Fund's 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 company's 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 company's 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 company's 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
company's annual or interim financial statements will not be prevented or
detected on a timely basis.

Our consideration of the Fund's 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 Fund's
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, 2011.

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, 2011
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.77C VOTES
<SEQUENCE>3
<FILENAME>c6651777c.txt
<DESCRIPTION>EX-99.77C
<TEXT>
<PAGE>
RESULTS OF ANNUAL MEETING

The Fund held its annual meeting of shareholders on June 30, 2011. The purpose
of the annual meeting was to elect two Trustees to the Fund's board of trustees
for a three year term, or until the trustee's successor is duly elected and
qualified, and to conduct any other lawful business of the Fund. Mr. John P.
Calamos, Sr. and Mr. William R. Rybak were nominated for reelection as Trustees,
and were elected as such by a plurality vote as follows:

<TABLE>
<CAPTION>
                                                               BROKER NON-
TRUSTEE NOMINEE          VOTES FOR     VOTES WITHHELD     VOTES AND ABSTENTIONS
--------------           ---------     --------------     ---------------------
<S>                      <C>           <C>                <C>
John P. Calamos, Sr.     59,937,374       864,850                    0
William R. Rybak         59,940,973       861,251                    0
</TABLE>

Messrs. Marsh, Neal, Timbers and Tripples' terms of office as Trustees continued
after the meeting.

</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.77E LEGAL
<SEQUENCE>4
<FILENAME>c66517ex77e.txt
<DESCRIPTION>EX-99.77E
<TEXT>
<PAGE>
LEGAL PROCEEDINGS

The Fund, the Fund's Board of Trustees, Calamos Advisors LLC (the "Adviser"),
and the corporate parent of the Adviser, Calamos Asset Management, Inc. have
been named as defendants in putative class action complaints filed by plaintiffs
in the Circuit Court of Cook County, Illinois and removed by the defendants to
the United States District Court for the Northern District of Illinois related
to the Fund's redemption of its previously outstanding Auction Rate Cumulative
Preferred Shares (the "ARPS") at their liquidation preference. The complaints,
captioned Brown v. Calamos, et al. and Bourrienne v. Calamos, et al., generally
allege that the Fund's Board of Trustees breached certain fiduciary duties owed
to the common shareholders of the Fund by approving the redemption of the Fund's
ARPS at their liquidation preference, and by recapitalizing the Fund with
debt-based borrowings that were allegedly less advantageous to the Fund's common
shareholders. The complaints also allege that the Adviser and the corporate
parent of the Adviser aided and abetted the Trustees' alleged breaches of
fiduciary duty and were unjustly enriched as a result, while the Brown complaint
also alleges that the Fund itself aided and abetted these actions and was
similarly unjustly enriched as a result. Both complaints allege identical causes
of action and encompass materially identical putative classes and class periods.
The suits seek indeterminate monetary and punitive damages from the named
defendants, as well as injunctive relief. On March 14, 2011, the judge assigned
to the Brown case dismissed it, and the plaintiff filed a Notice of Appeal in
the United States Court of Appeals for the Seventh Circuit. The Seventh Circuit
issued a decision on November 10, 2011 affirming the dismissal of the case
entered by the lower court. On August 4, 2011, the judge assigned to the
Bourrienne case dismissed it, and the plaintiff filed a Notice of Appeal in the
United States Court of Appeals for the Seventh Circuit. The Seventh Circuit
issued an order on December 7, 2011 dismissing the appeal pursuant to the
parties' stipulation of dismissal.

The Calamos Convertible & High Income Fund ("CHY"), CHY's Board of Trustees, the
Adviser and the corporate parent of the Adviser, Calamos Asset Management, Inc.,
among other persons, also have been named as defendants in a putative class
action complaint captioned Rutgers Casualty Ins. Co. v. Calamos, et al., which
relates to the redemption of ARPS by CHY. The complaint, which is similar to the
Brown and Bourrienne complaints, is currently pending in the United States
District Court for the Northern District of Illinois. The Rutgers complaint
generally alleges that CHY's Board of Trustees breached certain fiduciary duties
owed to the common shareholders of CHY by approving the redemption of CHY's ARPS
at their liquidation preference, and by recapitalizing CHY with debt-based
borrowings that were allegedly less advantageous to CHY's common shareholders.
The complaints also allege that the Adviser, the corporate parent of the
Adviser, and CHY itself aided and abetted the Trustees' alleged breaches of
fiduciary duty and were unjustly enriched as a result. The suit seeks
indeterminate monetary and punitive damages from the named defendants, as well
as injunctive relief. The defendants believe that the Rutgers complaint is
without merit, intend to defend themselves vigorously against the allegations,
and have moved to dismiss the case. That motion is pending before the district
court. The Fund believes that the litigation does not have any present material
adverse effect on the Fund or on the ability of the Adviser to perform its
obligations under its investment advisory contract with the Fund.
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
