US Tech Stocks Plunge as Chinese AI Startup DeepSeek Sparks Infrastructure Selloff SpaceXs Potential SP Sector Classification Rockets Satellites and AI Under One Ticker Corn Futures Decline in LateWeek Trade as Market Consolidates Salesforce Shares Dip Following Soft Revenue Forecast Amid AI Transformation Pressures Healthcare Tech Lift SP 500 Dow Outperforms on Broad Gains Perpetua Resources Secures 29 Billion US Loan for Idaho GoldAntimony Project Amid Critical Mineral Push Tony Blairs Economic Diagnosis Hits Mark But AIFocused Prescription Draws Scepticism