AI Stocks Today (Dec. 12, 2025): Broadcom and Oracle Spark Fresh AI Bubble Fears as Nvidia, AMD and Big Tech Slide at Midday
Broadcom shares fell about 10% by midday Friday after warning on margins tied to AI sales, triggering a sharp selloff in AI and semiconductor stocks. Nvidia dropped 2.2%, AMD 4%, and Oracle 5%. The Nasdaq-100 slid 1.7% and semiconductor ETFs lost over 3.5%. Investors shifted into sectors seen as less exposed to AI valuation risk.