AI Stocks Shake Markets: Big Tech Surges, Mega-Deals, and Bubble Warnings (Sept 7–8, 2025)
The past few days highlighted just how volatile – and influential – AI-focused stocks have become across global markets. In the U.S., major “AI winner” companies saw mixed fortunes. On Friday, Broadcom stunned the market with a +9.4% surge after revealing a massive new $10 billion order for its AI chips and hiking its sales outlook reuters.com. That blockbuster order reinforced Broadcom’s status as a backbone of AI data centers, and its stock jump helped lift tech indexes even as broader markets wobbled. The company’s quarterly results showed why investors are excited – revenue jumped 22%, with its AI-related sales up 63% year-on-year firstonline.info. CEO Hock Tan fueled optimism by touting an expanded partnership with OpenAI to develop AI-dedicated chips, predicting even more robust growth in 2026 firstonline.info. Broadcom’s news didn’t just boost its own shares; it ignited a rally in semiconductor names globally, from Silicon Valley to Europe. Chip suppliers like StMicroelectronics and Infineon leapt mid-single digits in Europe, and ASML – which produces advanced chipmaking equipment – also climbed firstonline.info reuters.com. Meanwhile Nvidia – often seen as the torchbearer of the AI boom – experienced an unusually turbulent week. Early in the week, Nvidia’s stock slid ~2% in