Blackrock 2037 Municipal Target Term. Replay the stock market charts of BMN day by day, back to 2003. Open long and short positions without spending any money. Blackrock 2037 Municipal Target Term Trust is an close-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 invests in n investment grade municipal securities that are rated BBB- or above by S&P and Fitch or Baa3 or above by Moody's. Blackrock 2037 Municipal Target Term Trust is domiciled in the United States.