AI optimism fuels global stock rebound after big-quarter beats

Stock futures rose on optimism from Amazon's upbeat earnings and AI-related growth, with Nasdaq 100 futures up about 0.5%, Dow +0.2%, and S&P 500 +0.1%; in Asia, Korea's Kospi and Japan's Nikkei led gains on strong chipmakers; after hours, Amazon jumped around 9% while Apple beat on revenue but fell on services, and Microsoft rally earlier boosted AI-linked chips; the 30-year Treasury yield climbed above 5.2% as investors price in slower Fed rate cuts; despite volatility, major indices were on track for weekly gains, and energy stocks climbed to record highs on strong crack spreads; several individual names moved in after-hours trading.