PIMCO Municipal Income Fund (NYSE: PMF) is a closed-end fixed income mutual fund that seeks to provide current income exempt from federal income tax by investing primarily in a diversified portfolio of investment-grade municipal bonds. The fund, under normal circumstances, invests at least 90% of its total assets in municipal bonds whose interest is exempt from regular federal income taxes, with up to 20% potentially subject to the federal alternative minimum tax; it employs a fundamental analysis approach with top-down stock picking and proprietary in-house research models to select securities across diversified sectors in the U.S. fixed income markets. Launched on June 29, 2001, and domiciled in the United States with headquarters at 650 Newport Center Drive, Newport Beach, California, the fund is managed by Allianz Global Investors Fund Management LLC and co-managed by Pacific Investment Management Company LLC, a subsidiary of Allianz S.E.
In a major strategic reorganization completed on August 1, 2025, PIMCO Municipal Income Fund was merged into PIMCO Municipal Income Fund II (NYSE: PML) as part of a broader consolidation of six PIMCO municipal income funds into three streamlined vehicles to enhance operational efficiency, reduce costs, improve liquidity, and eliminate redundancies in portfolio management and administration. Shareholders of PMF approved the merger on June 27, 2025, following its announcement on April 4, 2025, with PMF shareholders receiving common shares and Remarketable Variable Rate MuniFund Term Preferred Shares (RVMTP Shares) of PML based on relative net asset values as of the merger date. This restructuring reduced PIMCO's municipal fund offerings from nine to three core funds focused on national, New York, and California tax jurisdictions, positioning the combined entity for greater stability and focus amid a favorable municipal bond market backdrop.
The fund targets income-seeking investors, including individuals and institutions, through its emphasis on tax-exempt yields from U.S. municipal securities, with geographic operations centered in the United States and no international exposure specified. Post-merger, the surviving PML continues the legacy strategy with an expanded asset base from the acquisition, maintaining investment-grade municipal bonds as the core holding while benefiting from PIMCO's expertise as a leading global fixed income manager founded in 1971.