Rmr Real Estate Income Fund is a non-diversified closed-end management investment company. The fund's primary investment objective is to earn and pay a high level of current income to its common shareholders. The fund's secondary investment objective is capital appreciation. It pursues its investment objectives by investing in securities issued by real estate companies, including real estate investment trusts. The fund's investment portfolio includes real estate investment trusts, apartments, data centers, free-standing, healthcare, lodging/resorts, manufactured homes, mortgage, regional malls, shopping centers, specialty, storage and other.