BlackRock MuniVest Fund II, Inc. is a closed ended fixed income mutual fund launched by BlackRock, Inc. It is managed by BlackRock Advisors, LLC. The fund invests in fixed income markets. It invests primarily in long-term municipal bonds exempt from federal income taxes. BlackRock MuniVest Fund II, Inc. was formed on March 29, 1993 and is domiciled in United States.