Micron Technology (MU) Stock After the Bell on Dec. 24, 2025: Record-High Run, Today’s News, Fresh Forecasts, and What to Know Before the Next Open
Micron Technology, Inc. (NASDAQ: MU) closed the holiday-shortened Christmas Eve session higher and near record territory, extending a powerful year-end rally that has put the AI-memory trade back at the center of the semiconductor conversation. After the bell today (Wednesday, December 24, 2025)—with U.S. markets closing early at 1:00 p.m. ET—Micron stock finished at $286.53, up 3.71% on the day. MU traded between $277.30 and $289.25 in the shortened session and remains pressed against a fresh all-time/52-week high near $289.30. StockAnalysis+1 But here’s the detail many traders miss in holiday week: the U.S. stock market is closed tomorrow (Thursday, Dec.