Semiconductor Stocks Today (Dec. 18, 2025): Micron’s AI Memory Surge Meets Nvidia Capex Jitters, TSMC Tailwinds, and Fresh China-EUV Risk
Micron shares jumped 9% premarket Thursday after the company issued a much stronger-than-expected profit forecast, citing tight supply and surging demand for high-bandwidth memory used in AI. The upbeat results contrast with Wednesday’s sharp selloff in chip stocks, which was driven by concerns over AI infrastructure spending and financing. Micron’s CEO expects memory markets to remain tight beyond 2026.