Blackrock Income Trust Inc is a diversified investment fund with an investment objective to manage a portfolio of high-quality securities to achieve both preservations of capital and high monthly income. The trust seeks to achieve its investment objective by investing at least 65% of its assets in mortgage-backed securities. The Fund invests at least 80% of its assets in securities that are (i) issued or guaranteed by the U.S. government or one of its agencies or instrumentalities or (ii) rated at the time of investment either AAA by S&P Global Ratings ("S&P") or Aaa by Moody's Investors Service, Inc ("Moody's"). The Fund may invest directly in such securities or synthetically through the use of derivatives.