Lenovo Shares Surge Nearly 20 as Record Earnings Highlight AI Revenue Growth US Stocks Advance as Oil Prices Slide on USIran Diplomatic Signals Warren Buffett Teases Tiny Purchase in March Berkshire Filing May Identify the Investment Qualcomm Surges as Investors Anticipate AI Device Boom Persistent Inflation Pressures Beyond Energy Where Consumers Face Rising Costs London Stock Exchange Group Reports Income Growth Driven by Tradeweb Performance USChina Trade Tensions Persist APEC Highlights Continued Divergence