BKN | BlackRock Fixed Income | Good EntryBlackRock Investment Quality Municipal Trust 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 investment grade municipal bonds municipal obligations exempt from federal income taxes. Blackrock Investment Quality Municipal Trust Inc. was formed on February 28, 1993 and is domiciled in United States.