BlackRock MuniYield Fund, Inc. is a closed ended fixed income mutual fund launched by BlackRock, Inc. The fund is managed by BlackRock Advisors, LLC. It invests in fixed income markets. The fund primarily in long-term investment-grade municipal bonds with a maturity of more than ten years. It is exempt from federal income taxes. BlackRock MuniYield Fund, Inc. was formed on November 29, 1991 and is domiciled in United States.