Nuveen S&P 500 Buy-Write Income Fund (NYSE: BXMX) is a closed-end fund that seeks attractive total return with less volatility than the S&P 500 Index by investing in a diversified equity portfolio substantially replicating the price movements of the S&P 500 Index and selling index call options covering approximately 100% of the Fund's equity portfolio value. The Fund invests at least 80% of its assets in securities comprising the S&P 500 Index to support its buy-write option strategy, with substantially all managed assets (at least 90%) allocated to the equity portfolio or related pursuits; premiums from selling call options on the S&P 500 Index or individual holdings supplement dividend income, enhance total return, provide downside cushion during volatility, and smooth distributions, though the approach may limit upside in strong markets. It primarily serves income-oriented investors targeting U.S. public equity markets across diversified sectors, with operations focused in the United States.
The Fund, formerly known as Nuveen Equity Premium Income Fund, was launched on July 23, 2004 (inception October 26, 2004), and is headquartered in Chicago, Illinois at 333 West Wacker Drive; it is managed by Nuveen Fund Advisors, LLC and co-managed by Gateway Investment Advisers, LLC, as a subsidiary of Nuveen Asset Management under TIAA.
In September 2025, the Boards of Trustees of BXMX, Nuveen Dow 30 Dynamic Overwrite Fund (DIAX), and Nuveen S&P 500 Dynamic Overwrite Fund (SPXX) approved a proposal to merge BXMX and DIAX into SPXX, pending shareholder approval at special meetings on January 29, 2026, to create a larger fund with lower net operating expenses and increased exchange trading volume. This strategic reorganization represents the most significant recent development for BXMX, with no other major acquisitions, funding rounds, partnerships, or product launches reported in the past 1-2 years. The Fund continues quarterly distributions, recently yielding around 7.68% with an ex-dividend date of June 13, 2025.