BNY Mellon Smallcap Stock Index Fund (DISIX) is an open-end mutual fund managed by BNY Mellon Investment Adviser, Inc., a subsidiary of The Bank of New York Mellon Corporation, that seeks to provide investment results corresponding to the total return performance of small-cap U.S. companies, as represented by the S&P SmallCap 600 Index. The fund employs a passive management strategy through a portfolio of small-cap stocks that closely replicates the composition and weighting of the benchmark index; invests at least 80% of its assets in securities included in the index; and may engage in securities lending and derivatives such as futures and swap agreements for risk management and efficient portfolio implementation. It targets institutional and retail investors seeking broad exposure to the U.S. small-cap equity market segment, operates primarily in the United States with global custody services provided through its parent company's network, and is headquartered in New York, New York, under the broader BNY Mellon organization founded in 1784. In recent developments, the fund continues to align with BNY Mellon's strategic focus on expanding index-based investment solutions amid market volatility, including enhancements to its ESG integration options and fee structure optimizations announced in late 2024 to attract sustainable investing inflows; BNY Mellon as parent completed the integration of its acquisition of Insight Investment in 2024, bolstering fixed income and alternatives capabilities that indirectly support equity index products like DISIX; and launched updated share classes with lower expense ratios in early 2025 to compete in the passive small-cap space dominated by ETFs.