Calamos Convertible Opportunities & Income Fund is a closed-ended fund managed by Calamos Advisors LLC. It seeks to make its investments in the consumer discretionary, financial, energy, consumer staples, information technology, industrials, materials, healthcare, utilities, and telecommunication services industries. The fund invests in the public fixed income markets of the United States. It primarily invests in high yield fixed income securities and convertible securities that are either investment grade, BB rated, rated B and below, or unrated. The fund employs a fundamental analysis to invest in value securities. It seeks total return through a combination of capital appreciation and current income.