Berkshire Hathaway Makes Major Portfolio Shift New Stakes in Delta Air Lines and Alphabet US Treasury Yields Surge as RiskFree Asset Assumptions Shift Amid Geopolitical and Inflation Concerns Kevin Warsh Sworn In as Federal Reserve Chair Amid Trumps Push for Lower Rates Guzman y Gomez Exits US Market After Struggling with Intense Competition Golds Puzzling Slide Amid Falling Yields Whats Driving the Divergence Berkshire Hathaway Revamps Portfolio New Stakes in Delta Air Lines Alphabet Increase AI Washing Gains Traction as UK Firms Rebrand Automation as Artificial Intelligence