The Guggenheim Taxable Municipal Bond & Investment Grade Debt Trust is a closed-end mutual fund focusing on fixed-income investments, originally launched by Guggenheim Partners, LLC. Its operations are jointly managed by Guggenheim Funds Investment Advisors, LLC and Guggenheim Partners Investment Management, LLC. The trust allocates capital within the United States' fixed income markets, primarily building a diversified portfolio composed of taxable municipal securities, particularly those designated as Build America Bonds. Established on October 26, 2010, this U.S.-domiciled entity was formerly known as Guggenheim Taxable Municipal Managed Duration Trust.