Calamos Strategic Total Return Fund, a closed-ended balanced mutual fund, invests in the public equity and fixed income markets of the United States, seeking to invest in securities of companies operating across diversified sectors. Managed by Calamos Advisors LLC, the fund employs both fundamental and quantitative analysis with a combination of bottom-up and top-down security picking approaches to create its portfolio. Formed on December 31, 2003, Calamos Strategic Total Return Fund primarily invests in common and preferred stocks of companies across all market capitalizations, as well as convertible securities and high yield corporate bonds with an average credit rating of BB as rated by S&P.