Semiconductor Stocks Weekly Recap (Dec 1–7, 2025): AI Mega-Deals, New Chip Laws and a Near-4% Sector Surge
The PHLX Semiconductor Index rose 3.9% this week to around 7,294, outpacing broader U.S. indices. Nvidia disclosed a $2 billion stake in Synopsys, boosting Synopsys shares 5% and Nvidia 1%. Chip stocks rallied on AI infrastructure deals, forecasts of $1 trillion in annual sales, and new U.S. export controls targeting China. The iShares Semiconductor ETF closed near $309.40, up 44% year-to-date.