787 Seventh Avenue New York, NY 10019-6099 Tel:  212 728 8000 Fax: 212 728 8111

January 3, 2013

VIA EDGAR

Securities and Exchange Commission

100 F Street, NE

Washington, DC 20549

Re:	Credit Suisse Opportunity Funds
	File Nos. 33-92982; 811-9054

Ladies and Gentlemen:

On behalf of the Registrant and pursuant to Rule 497(e) under the Securities Act of 1933, as amended, attached for filing are exhibits containing interactive data format risk/return summary information that mirrors the risk/return summary information in the Prospectus, dated March 5, 2012, as amended December 21, 2012, for the Credit Suisse Multialternative Strategy Fund, a series of the Registrant (the “Fund”). The purpose of the filing is to submit the 497(e) filing dated December 21, 2012 in XBRL for the Fund.

Any questions or comments on the attached should be directed to the undersigned at 212-728-8138.

Sincerely,

/s/Elliot J. Gluck

Elliot J. Gluck

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