This investment product seeks to deliver an attractive overall return, placing a significant emphasis on generating robust current income while simultaneously pursuing capital growth. MFS typically allocates the fund's assets predominantly across a wide variety of debt instruments. These obligations are issued by both domestic and international corporations, governmental agencies, and other types of entities. The strategy permits holdings of below-investment-grade quality debt and fixed-income securities originating from developing market countries. Specifically, MFS concentrates its investments on corporate bonds, mortgage-backed securities, other structured financial instruments, U.S. government debt, and bonds from emerging market issuers.