US AI Stocks Plunge as Chinas DeepSeek Sparks Market Selloff Treasury Yields Mixed as New Fed Chair Kevin Warsh Takes Office Amid Persistent Bond Volatility Trump Asks Supreme Court to Halt TikTok Ban Market Implications Unfold Brookings Analysis Potential ShortRun Economic Impacts of 2025 Tariffs on US Economy Birkenstock BIRK Shares Surge 33 on 250 Million Share Buyback Announcement SpaceX OpenAI and Anthropic May Surpass Berkshire Hathaway on Market Debut Prediction Market Suggests Italian Competition Watchdog Investigates EasyJet Over Baggage Pricing Practices