COVER 6 filename6.htm

Letter to the SEC

		ROPES & GRAY LLP
		191 NORTH WACKER DRIVE
		32nd FLOOR
		CHICAGO, ILLINOIS 60606-4302
		WWW.ROPESGRAY.COM

Matthew A. Brunmeier

T +1 312 845 1376

matthew.brunmeier@ropesgray.com

February 28, 2019

VIA EDGAR

Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

Re: Calamos Convertible Opportunities and Income Fund (File Nos. 333-229042, 811-21080) (the “Registrant”)

Ladies and Gentleman:

On behalf of the Registrant, we are filing today, pursuant to the Securities Act of 1933, as amended and the Investment Company Act of 1940, as amended, by electronic submission via EDGAR, Pre-Effective Amendment No. 2 to the Registration Statement on Form N-2 (the “Amendment”). This Amendment is being filed for the purposes of responding to comments from the staff of the Securities and Exchange Commission, filing exhibits, completing open information and to make certain other non-material changes. This Amendment has been marked to indicate changes made from the Trust’s initial Registration Statement on Form N-2, filed on December 27, 2018.

A registration fee of $11,998.80 was previously paid in connection with Pre-Effective Amendment No. 1 to the Registration Statement on February 22, 2019, and a registration fee of $121.20 was previously paid in connection with the initial registration statement on December 27, 2018. No fees are required in connection with this filing.

Very truly yours,

/s/ Matthew A. Brunmeier

Matthew A. Brunmeier

cc:   John P. Calamos, Sr.

J. Christopher Jackson, Esq.

Paulita Pike, Esq.

Jeremy Smith, Esq.