Micron stock closes up 3% as DRAM prices tick higher — why MU is moving today
NEW YORK, December 29, 2025, 4:09 PM ET — After-hours Micron Technology (MU) shares rose 3.4% on Monday to end at $294.40, rebounding from an early slide and finishing near the session high. The stock traded between $278.51 and $294.45 on volume of about 25.6 million shares, market data showed. The move matters because Micron sits in a pricing-driven corner of semiconductors, where small shifts in memory prices can flow quickly through earnings. Investors have been watching for signs that supply remains tight as AI-related demand pulls capacity toward higher-end products. A key focus is high-bandwidth memory, or HBM —