AB Select US Equity Portfolio Class C (AUUCX) is an open-end mutual fund managed by AllianceBernstein that primarily invests at least 80% of its net assets in equity securities of U.S. companies, focusing on large- and mid-cap stocks with a flexible, unconstrained approach unbiased by investment style; it employs bottom-up fundamental analysis to identify companies with growth potential while emphasizing downside risk management and normally holds 50 to 70 stocks across sectors such as technology (24.78%), financial services (19.49%), healthcare (11.53%), communication services (10.86%), and industrials (10.83%). Top holdings typically include major names like Microsoft Corp. (5.73%), Apple Inc. (5.71%), NVIDIA Corp. (5.18%), Berkshire Hathaway Inc. (4.00%), and cash equivalents, comprising about 24.69% of the portfolio, with 94.41% allocated to U.S. stocks, 4.07% to cash, and minor non-U.S. exposure. The fund, launched on December 8, 2011, and domiciled in the United States, is led by portfolio managers Kurt Feuerman (since inception) and Anthony Nappo (since June 30, 2015), with total net assets of approximately $296.88 million and a net expense ratio of 2.24% for the Class C shares. Geographically, it targets the U.S. market and serves investors seeking large blend equity exposure through various share classes including Advisor (AUUYX), Institutional (AUUIX), and others offered by AllianceBernstein, a global investment manager. Recent developments at AllianceBernstein include the launch of the AB US Equity ETF (NYSE: XCHG) on December 15, 2025, an actively managed ETF pursuing long-term capital appreciation via U.S. equity securities with Citadel Securities (initially reported) or Jane Street as lead market maker, expanding AB's U.S. ETF lineup to 23 funds managing over $13 billion; additionally, in July 2025, AB announced plans to convert certain bond and municipal mutual funds to ETFs, reflecting a strategic shift toward ETF offerings amid industry trends.