The Fiduciary/Claymore Energy Infrastructure Fund (FMO) is a U.S.-domiciled, closed-end equity mutual fund overseen by Guggenheim Funds Investment Advisors, LLC, with Advisory Research, Inc. serving as co-manager. This fund strategically allocates capital to public equity markets within the United States, targeting companies primarily engaged in a range of energy-related sectors. These include diversified gas and midstream oil infrastructure, propane, oil and gas production, coal, and marine transportation. A core aspect of its strategy requires investing a minimum of 80% of its managed assets in Master Limited Partnership (MLP) entities, with at least 65% specifically dedicated to equity securities of MLPs. The fund measures its performance against the Alerian MLP Index. Established on December 22, 2004, the fund was formerly known as the Fiduciary/Claymore MLP Opportunity Fund.