Putnam High Income Securities Fund is a closed-ended fixed income mutual fund launched and managed by Putnam Investment Management, LLC. The fund is co-managed by Putnam Investments Limited (U.K.). It invests in the fixed income markets of the United States. The fund seeks to invest in high yield convertible securities. For its fixed income portfolio, it looks for convertible, high yield, lower rated securities to make its investments. The fund benchmarks the performance of its portfolio against the Merrill Lynch All-Convert. Speculative Index and JP Morgan Dev. High yield Index. It was formerly known as Putnam High Income Bond Fund. Putnam High Income Securities Fund was formed on July 9, 1987 and is domiciled in the United States.