Micron Stock (MU) Jumps on Blowout Forecast: AI Memory Shortage, HBM Sold Out for 2026, and What Wall Street Expects Next
Micron Technology, Inc. (NASDAQ: MU) is back at the center of the AI trade on December 18, 2025, after delivering record fiscal Q1 results and issuing a second-quarter outlook that dramatically exceeded Wall Street expectations—sparking a sharp rally in Micron stock and lifting sentiment across semiconductors. MarketWatch+2Barron’s+2 The key takeaway behind today’s headlines is simple but powerful: memory is becoming one of the main bottlenecks in the AI buildout. Micron says demand—especially for high-bandwidth memory (HBM) used in AI accelerators—remains so tight that the company has already completed price-and-volume agreements for its entire calendar 2026 HBM supply, including next-generation HBM4.