RiverNorth Managed Duration Municipal Income Fund, Inc.

RiverNorth Managed Duration Municipal Income Fund, Inc. (RMM) shows no cyber incidents or red-flag 8-K filings in our recent 90-day monitoring window. This absence of acute events does not establish a complete risk picture—low signal in a short window can mask structural vulnerabilities in fund strategy, leverage exposure, or shareholder dilution patterns. The full $49 Report extends analysis to 12 months of SEC filings, applies our dilution risk scoring model, maps financing and derivative history, and flags emerging AI-detected covenant and liquidity signals. The full $49 Report adds quantified dilution trajectory, 12-month 8-K context, and forward-risk indicators you won't find in headline data.