MFS INVESTMENT FUNDS - U.S. MUNICIPAL BOND FUND - Sterling Klasse/  LU1774118688  /

The fund’s investment objective is to seek total return with an emphasis on current income, but also considering capital appreciation, as measured in US dollars. The fund invests primarily (at least 70%) in investment grade U.S. municipal debt instruments. The fund generally focuses its investments in taxable municipal debt instruments, but may also invest in U.S. tax-exempt municipal debt instruments and debt instruments of private issuers, including non-profit organizations, used to finance services and/or projects that relate to public or municipal functions. The fund may invest a relatively large percentage of the fund’s assets in municipal and other debt instruments that finance similar projects. The fund may invest a significant percentage of the fund's assets in issuers in a single U.S. state, territory, or possession, or a small number of U.S. states, territories, or possessions.