The Nuveen S&P 500 Dynamic Overwrite Fund (SPXX) operates as a closed-end, equity-indexed mutual fund, sponsored by Nuveen Investments, Inc. It is jointly managed by Nuveen Fund Advisors LLC and Nuveen Asset Management, LLC. This fund primarily invests in public equities within the United States, focusing on large-capitalization companies spanning various sectors. As part of its investment strategy, it also employs financial derivatives, such as call options. The fund's core objective is to replicate the performance of the S&P 500 Index. Initially launched on November 11, 2004, and domiciled in the U.S., it was previously known as the Nuveen Equity Premium and Growth Fund.