Managed by AllianceBernstein L.P., the AllianceBernstein National Municipal Income Fund is a closed-end mutual fund dedicated to fixed income investments within the United States. Its primary objective is to acquire investment-grade municipal securities that offer interest exempt from federal income tax, specifically targeting bonds rated Baa/BBB or higher. The fund's portfolio construction utilizes a comprehensive strategy, blending both quantitative analysis and fundamental research. Performance evaluation for this fund is benchmarked against the Barclays Municipal Bond Index. Founded on November 9, 2001, and domiciled in the U.S., it was formerly known as Alliance National Municipal Income Fund Inc.