The investment seeks as high a level of current income, exempt from federal income tax, as is consistent with the preservation of capital. The fund normally invests at least 80% of assets in investment-grade municipal securities (i) whose interest is exempt from federal income tax and (ii) that Fidelity Management & Research Company LLC (FMR) (the Adviser) believes have positive environmental, social and governance (ESG) benefits. It normally maintains a dollar-weighted average maturity between three and 10 years.