Big Tech Stocks Sink as AI Payoff Fears Hit Broadcom and Oracle; Nvidia’s China Signal Adds a Twist (Dec. 12, 2025)
Broadcom shares fell 11.4% and Oracle dropped 4.5% on Dec. 12, 2025, after warnings about AI margins and infrastructure spending reignited concerns over the sector’s profitability. The Nasdaq slid 1.69% to 23,195.17, with the Philadelphia Semiconductor Index down 5.1% for its worst session since October. Investors shifted focus to margins and cash flow, hitting chip and AI infrastructure stocks hardest.