RiverNorth Managed Duration Municipal Income Fund, Inc.

RiverNorth Managed Duration Municipal Income Fund, Inc. is a closed-end fixed income mutual fund that invests primarily in investment-grade municipal debt securities issued in the United States. The fund was launched in July 2019 and is managed by RiverNorth Capital Management, LLC, with co-management provided by MacKay Shields LLC. The portfolio employs a combination of fundamental and quantitative analysis to construct positions across municipal securities of varying maturities, with performance benchmarked against the Bloomberg Barclays Municipal Bond Index.

The fund generates revenue through management fees charged on assets under management. Its investment strategy emphasizes proprietary research to identify municipal debt opportunities, allowing flexibility in maturity selection to optimize income generation and risk management. The fund's approach to duration management distinguishes it within the municipal bond fund category, enabling tactical positioning based on interest rate and credit outlooks.

Based in Chicago, Illinois, the fund operates within the broader asset management industry as part of the financial services sector. With a market capitalization of approximately $0.3 billion, RiverNorth Managed Duration Municipal Income Fund represents a specialized vehicle within the closed-end fund landscape, serving investors seeking municipal bond exposure with active management.