BlackRock U.S. Government Bond Portfolio Investor A Shares 

This fund aims to generate the highest possible overall return while also providing consistent income and utilizing responsible investment strategies. It achieves this by investing in fixed-income assets that the fund's managers identify as having a beneficial social and/or environmental impact. To accomplish its objective, the fund commits a minimum of 80% of its net assets, plus any capital borrowed for investment, to mortgage-backed debt instruments and other mortgage-linked securities that are issued or guaranteed by the United States government and its agencies.