Chip stocks led the market lower today as investors took profits across the AI trade, weighing on the Nasdaq-100 (NDX) after notable weakness in Nvidia (NVDA) and other semiconductor names. Meanwhile, Apple (AAPL) reclaimed the title of the world's most valuable company by market cap ahead of earnings. China's ChangXin Memory Technologies made headlines with a 466% surge in its Shanghai trading debut. Marley Kayden highlights the key stories moving markets to start the trading week.