Qualcomm Stock Surges as Investor Sentiment Shifts Toward AI Device Boom SP 500 Edges Higher as Healthcare and Tech Lead Communication Services Weighs Tesla Stock Forms ThreeWeeksTight Pattern Amid Recovery From Deep Slump Enphase Energy Shares Surge 137 Following Goldman Sachs Optimistic Outlook Healthcare Tech Lift SP 500 Dow Outperforms on Broad Gains Japans Role in Fentanyl Smuggling Route Raises Trade and Security Concerns US Tech Stocks Plunge as Chinese AI Startup DeepSeek Sparks Infrastructure Selloff