On Wednesday, U.S. equity futures experienced modest gains, with S&P 500 and Nasdaq 100 futures increasing by nearly 0.3%, whereas the Dow Jones futures remained relatively unchanged following a previous session of losses. The market sentiment improved due to renewed optimism surrounding artificial intelligence advancements. Notably, Alibaba's premarket shares surged by almost 9% after the CEO revealed plans to increase AI investment beyond the initial target of over $50 billion. Additionally, Micron Technology's shares rose by more than 1%, driven by better-than-expected earnings and a favorable outlook. Prominent tech companies Nvidia and Broadcom saw their stocks rise by 0.8% and 0.5% respectively in premarket activity. Concurrently, investors continued to assess Federal Reserve Chair Powell's comments, which highlighted ongoing labor market and inflation risks while warning that equities remain overvalued.