Kayne Anderson Energy Infrastructure Fund, Inc. (formerly Kayne Anderson MLP Investment Company) functions as a closed-end equity mutual fund. Its primary management is provided by KA Fund Advisors, LLC, with co-management handled by Kayne Anderson Capital Advisors, L.P. The fund directs its investments into public equity markets across the United States, concentrating specifically on companies operating within the energy sector. A significant portion of its portfolio is allocated to master limited partnerships (MLPs) linked to the energy industry. This fund was established on June 4, 2004, and is domiciled in the United States.