The Pioneer Municipal High Income Opportunities Fund, Inc. (MIO) is a mutual fund that focuses on investing in high-yield municipal bonds. These bonds are issued by state and local governments to fund various projects and are generally considered to be low-risk investments. The fund aims to provide investors with a steady stream of tax-free income while also seeking capital appreciation. With a diverse portfolio of municipal bonds, the Pioneer Municipal High Income Opportunities Fund, Inc. offers investors the potential for both income and growth.