U.S. stock futures remained relatively stable on Wednesday following a decline in major indexes during the previous session. Investors have been processing the cautious statements from Federal Reserve officials, along with ongoing concerns about the sustainability of the recent AI-driven market rally. High valuations have also made the market vulnerable to profit-taking. On Tuesday, the Dow Jones Industrial Average fell by 0.19%, the S&P 500 lost 0.55%, and the Nasdaq Composite decreased by 0.95%, with all three benchmarks falling back from their record highs. Notably, Nvidia saw a decline of 2.8% after Monday's sharp rise linked to its $100 billion investment in OpenAI, as traders expressed skepticism about the deal's structure and significant energy demands. Other major tech companies also experienced declines, including Tesla (-1.9%), Amazon (-3%), Oracle (-4.4%), Microsoft (-1%), and Meta (-1.3%). In contrast, Micron Technology saw gains in after-hours trading, boosted by positive earnings results and a promising forecast.