The JPMorgan Mortgage Backed Securities Fund Class A (OMBAX) is a mutual fund that primarily invests in mortgage-backed securities, which are debt securities that are backed by a pool of mortgages. This fund is managed by JPMorgan Asset Management and aims to provide investors with a diversified portfolio of mortgage-backed securities, potentially offering a steady stream of income and potential for capital appreciation. As a Class A fund, it may have a front-end sales charge and a lower expense ratio compared to other share classes.