Guggenheim Taxable Municipal Bond & Investment Grade Debt Trust is a closed ended fixed income mutual fund launched by Guggenheim Partners, LLC. The fund is co-managed by Guggenheim Funds Investment Advisors, LLC and Guggenheim Partners Investment Management, LLC. It invests in fixed income markets of the United States. The fund primarily invests in a diversified portfolio of taxable municipal securities known as Build America Bonds. It was formerly known as Guggenheim Taxable Municipal Managed Duration Trust. Guggenheim Taxable Municipal Bond & Investment Grade Debt Trust was formed on October 26, 2010 and is domiciled in United States.