The First Trust Energy Infrastructure Fund (FIF) is a mutual fund that focuses on investing in companies involved in the energy infrastructure sector. This includes companies that own and operate pipelines, storage facilities, and other critical infrastructure for the production, transportation, and distribution of energy. The fund aims to provide investors with exposure to this sector, which is essential for the functioning of the global economy, and potentially generate long-term capital appreciation. FIF may also provide regular income through dividends from its investments.