Calamos Convertible Opportunities and Income Fund is a closed ended fixed income mutual fund launched by Calamos Investments LLC It is managed by Calamos Advisors LLC The fund invests in the fixed income markets of the United States It primarily invests in a diversified portfolio of convertible securities and high yield corporate bonds rated Ba or lower by Moodys or BB or lower by Standard Poors The fund employs both fundamental and quantitative analysis with a focus on such factors as financial soundness ability to make interest and dividend payments earnings and cashflow forecast and quality of management to create its portfolio Calamos Convertible Opportunities and Income Fund was formed on April 17 2002 and is domiciled in the United States