Micron Technology (MU) shares have exhibited sharp volatility in October 2026 amid a post-earnings pullback, trading near $880–$935 after closing as high as $983 late last week, well below the $1,255 peak reached earlier in the year. The primary driver remains the September 30 fiscal Q4 and full-year 2026 results, which delivered revenue of $54.23 billion and $133.19 billion respectively—both up over 250% year-over-year—along with non-GAAP EPS of $33.42 and gross margins near 87%, fueled by AI-driven demand for high-bandwidth memory and DRAM. Management guided fiscal Q1 2027 revenue at $61.5 billion with continued margin strength, citing committed shipments and supply tightness through 2028. Analyst consensus targets cluster near $1,560, though broader semiconductor weakness and profit-taking have pressured near-term levels ahead of month-end resolution and the December earnings release.