Micron stock AI demand has transformed the Boise-based chipmaker from a cyclical commodity play into the semiconductor industry's most explosive growth story. Micron Technology (MU) shares have surged approximately 700% over the past 12 months, propelled by an unprecedented boom in high-bandwidth memory (HBM) needed to train and run artificial intelligence models. The stock crossed $800 in May 2026 after gaining another 180% year-to-date, making it the top-performing major AI stock over the trailing year.
The rally reflects a fundamental shift in Micron's business model. What was once a commodity DRAM and NAND flash vendor subject to brutal pricing cycles has become a critical supplier of specialized memory chips that hyperscalers like Microsoft, Google, Amazon, and Meta cannot get enough of. With HBM3e and HBM4 inventory sold out for the year, Micron now commands pricing power that would have been unthinkable two years ago.
What happened
Micron's fiscal second quarter of 2026 (ended late February) delivered results that stunned even the most bullish analysts. Revenue reached $23.86 billion, a staggering 196% increase year-over-year and 75% jump sequentially. Non-GAAP earnings per share of $12.20 crushed the consensus estimate of $8.79 by nearly 39%, while GAAP net income hit $13.79 billion. The gross margin expanded to 74.9%, a level that reflects the pricing power that comes with sold-out capacity in the AI memory market.
The results were driven by explosive demand across Micron's key business units. Cloud memory revenue soared more than 160% to $7.75 billion as hyperscalers raced to build out AI training clusters. The mobile and client unit saw revenue jump to $7.71 billion from $2.24 billion a year ago, fueled by on-device AI features in smartphones and PCs that require more memory per device. Perhaps most importantly, Micron confirmed that its entire HBM3e and HBM4 production capacity is already committed through the end of fiscal 2026, giving the company unprecedented visibility into future revenue.
Forward guidance was equally impressive. Micron projected fiscal Q3 revenue of $33.5 billion, plus or minus $750 million, which would represent yet another record quarter. The company guided for gross margins of approximately 81% and earnings per share of $19.15, suggesting the growth trajectory is accelerating rather than plateauing. Management emphasized that the AI memory supercycle has fundamentally changed the industry's dynamics, with long-term contracts replacing the spot-market volatility that historically plagued the sector.