Babson Capital Corporate Investors trust is a closed-end fixed income mutual fund launched and managed by Babson Capital Management LLC. It invests in fixed income markets of the United States. The fund seeks to invest in securities of companies operating across diversified sectors. It primarily invests in a portfolio of privately placed, below-investment grade, long term corporate debt obligations. The fund also invests in marketable investment grade debt securities, other marketable debt securities, and marketable common stocks. It was formerly known as MassMutual Corporate Investors fund. Babson Capital Corporate Investors trust was formed in 1971 and is domiciled in the United States.