BlackRock Income Trust, Inc. is a closed ended fixed income mutual fund launched by BlackRock, Inc. The fund is managed by BlackRock Advisors, LLC. It invests in the fixed income markets of the United States. The fund invests in securities of companies that operate across diversified sectors. It invests in securities such as U.S. government sponsored agency securities, non-agency mortgage-backed securities, asset-backed securities, and U.S. treasury obligations. The fund invests its assets in securities that are issued or guaranteed by the US government or one of its agencies or instrumentalities or rated at the time of investment either AAA by S&P or Aaa by Moody's. BlackRock Income Trust, Inc. was formed on July 22, 1988 and is domiciled in the United States.