BlackRock MuniVest Fund, Inc. operates as closed end investment fund. Its investment objective is to provide shareholders with as high a level of current income exempt from federal income taxes as is consistent with its investment policies and prudent investment management. The trust seeks to achieve its investment objective by investing its assets in municipal obligations exempt from federal income taxes. BlackRock MuniVest Fund was founded on September 29, 1988 and is headquartered in Wilmington, DE.