Shares of Micron Technology surged to an all-time high after blockbuster earnings and soaring demand for High Bandwidth Memory positioned the company at the core of the global AI infrastructure race.
Shares of Micron Technology surged sharply, climbing about 14% in a single trading session to reach a record high of $742.15, marking one of the strongest rallies in the semiconductor sector. Over the past year, the company’s stock has risen nearly 690%, reflecting what analysts increasingly describe as a structural transformation rather than a short-term market cycle.
As of May 2026, Micron shares were trading around $732, delivering their strongest weekly performance since 2008. The rally has pushed the company’s market capitalisation beyond $700 billion, signalling renewed investor confidence in the long-term outlook of memory semiconductor businesses once considered highly cyclical.
The momentum follows exceptional financial results for Micron’s fiscal second quarter of 2026. The company reported revenue of $23.86 billion, representing a 196% year-on-year increase. Earnings per share reached $12.20, significantly exceeding market expectations, while gross margins expanded to a record 74.9%, nearly doubling from the previous year. Overall GAAP earnings grew more than sevenfold, highlighting the scale of demand driven by artificial intelligence infrastructure.
Credit ratings agency Fitch upgraded Micron’s rating to BBB+ with a stable outlook, citing improved profitability and stronger revenue visibility supported by long-term contracts with hyperscale cloud providers such as Amazon, Microsoft, and Google.
Central to Micron’s growth story is High Bandwidth Memory (HBM), a specialised memory technology essential for running advanced AI systems. Unlike traditional memory, HBM enables massive data transfer speeds required by modern AI processors produced by companies including Nvidia and AMD.
Micron is one of only three global manufacturers capable of producing HBM at scale, alongside SK Hynix and Samsung Electronics. The company has confirmed that its entire HBM production capacity is already sold out through 2026, underscoring the intensity of AI-driven demand.
Looking ahead, Micron expects the global HBM market to expand rapidly, potentially growing from about $35 billion in 2025 to nearly $100 billion by 2028, positioning the company at the center of the accelerating AI semiconductor revolution.
