Blackrock Munivest Fund II. Replay the stock market charts of MVT day by day, back to 2003. Open long and short positions without spending any money. 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.