Micron (MU) After Hours: What to Know Before the Stock Market Opens on December 12, 2025
Micron Technology, Inc. (NASDAQ: MU) is heading into Friday’s session perched near record highs, even after a choppy day for AI‑linked tech stocks. On Thursday, December 11, 2025, Micron shares closed around $258.46, down about 2% on the day, before recovering to roughly $260.12 in extended trading, a modest after‑hours bounce of about 0.6%. MarketBeat Despite the pullback, Micron remains up more than 200% in 2025, having recently tagged a new 52‑week (and record) high near $264.75, making it one of the top‑performing stocks in the Nasdaq 100 this year. Investopedia+1 Here’s what happened after the bell on December 11—and