Micron Technology shares traded in a wide range during the week of October 26, 2026, closing near $903 on Monday before surging to an intraday high of $990 on October 28 after SK Hynix reported record results and signaled memory demand outpacing supply through 2030. The rally reflected AI-driven demand for HBM and DRAM, reinforced by Micron’s own fiscal Q4 2026 beat with $54.23 billion revenue and a $60–63 billion Q1 2027 guide. However, broader tech weakness from Alphabet, Amazon, and Intel results triggered a sharp reversal, pushing the stock below $900 by October 30 amid concerns over AI spending returns. Traders are weighing sustained supply tightness and margin expansion against near-term sentiment shifts and the next catalyst in December earnings.