AI Memory Leader Soars 10% on Earnings Expectations, Adding Over 200 Trillion Won in Just One Day

U.S. memory chipmaker Micron Technology, Inc. (NASDAQ: MU) saw its shares jump 9.83% from the previous trading day, closing around $1,246 (about KRW 1.74 million). Trading volume reached roughly 38.36 million shares, and its market capitalization swelled by approximately $153 billion to about $1.4 trillion (around KRW 1,970 trillion) in a single session.

Micron is scheduled to release its fiscal 2026 third-quarter earnings on June 24 (local time). Thanks to a surge in demand for AI-server memory, Wall Street analysts are forecasting sharp gains in both revenue and profit, driving investor enthusiasm to fever pitch. The company has also reconfirmed its plans to expand “Made in America” memory production—most notably through a capacity increase at its Virginia plant—bolstering its long-term growth story.

Headquartered in the U.S., Micron is a global leader in memory semiconductors. It manufactures DRAM, NAND flash, solid-state drives (SSDs) and high-bandwidth memory (HBM), supplying essential components for AI servers, data centers, smartphones and PCs. Since the global memory supply shortage began in 2024 and AI demand has surged, Micron has emerged as one of the industry’s biggest beneficiaries and a symbol of the memory sector’s transformation from a cyclical business to a more resilient growth story.