Micron Reports 346% Revenue Surge as AI Chip Demand Outstrips Supply

Micron Technology posted one of the most dramatic earnings reports of the AI boom era on Wednesday, with fiscal third-quarter revenue jumping 346% year-over-year to $41.46 billion — more than quadrupling the $9.30 billion the memory chipmaker reported in the same quarter last year. The results sailed past Wall Street's already aggressive expectations, and shares jumped as much as 14.6% in extended trading following the announcement. Analysts had forecast revenue of roughly $35.25 to $35.84 billion heading into the report. Micron beat that consensus by more than $6 billion, and even cleared its own guidance midpoint of $33.5 billion by a wide margin. The Numbers Behind the Headline The scale of Micron's quarter goes well beyond the topline revenue figure. GAAP net income exceeded $28 billion, up from just under $2 billion in the year-ago quarter, while adjusted earnings per share came in at $25.11 — far ahead of the roughly $20.49 to $21 analysts had projected. Gross margin, the share of revenue left after the direct cost of making the chips, jumped to nearly 85% in the quarter, up from 74.9% the prior quarter and just 39% a year earlier. Operating cash flow hit $25.39 billion for the quarter, compared with $11.90 billion the prior quarter and only $4.61 billion a year ago. Micron ended the period with $30.2 billion in cash, marketable investments, and restricted cash on hand. The company has now generated as much cumulative cash flow over the past two quarters as in its entire history, according to commentary on the earnings call. Looking ahead, Micron guided for fiscal fourth-quarter revenue of about $50 billion, plus or minus $1 billion — up from just $11.3 billion in the same quarter a year earlier — alongside adjusted earnings per share of roughly $31 and gross margin near 86%. What's Driving It: High-Bandwidth Memory The engine behind Micron's surge is high-bandwidth memory, or HBM — the specialized memory chips that sit directly alongside AI accelerators from Nvidia, AMD, and other chipmakers inside data centers. Micron has said its entire 2026 supply of HBM is effectively sold out, with demand running so far ahead of available production capacity that essentially every chip coming off the line already has a buyer waiting. Data-center revenue alone reached $25 billion for the quarter, and enterprise SSD revenue hit $5 billion, representing 20% of total data-center revenue. CEO Sanjay Mehrotra framed the results as confirmation of memory's growing strategic importance. "Micron's record fiscal Q3 financial results and even stronger outlook for Q4 reflect the strategic value of memory in the AI era," Mehrotra said in the company's earnings statement. "Micron is investing at record levels in technology, products and supply to address our customers' rapidly growing demand." Locking In Demand With Long-Term Contracts Alongside its earnings, Micron disclosed 16 multi-year Strategic Customer Agreements that collectively lock in roughly $100 billion in minimum contracted revenue, along with $22 billion in upfront customer cash. The take-or-pay structure of these deals — meaning customers are bound to purchase committed volumes whether or not they ultimately need them — is designed to give Micron predictable, durable revenue and smooth out the boom-and-bust cycles that have historically plagued the memory chip industry. "When completed, we expect approximately half or more of our company revenue to be under these" agreements, Mehrotra said. CFO Mark Murphy added that the structure benefits both sides: "We get visibility on our demand, it's committed volume that we can be confident about making our investments." Capacity Constraints Loom Large Despite the blowout quarter, Micron's own leadership acknowledged the company has no clear timeline for closing the gap between supply and demand. Executives said on the earnings call that new fabrication facilities currently under construction won't deliver meaningful output until fiscal 2028. The company is simultaneously developing next-generation HBM4E memory, built on its 1-gamma DRAM manufacturing process, with volume production targeted for calendar year 2027. Micron is the only U.S.-based manufacturer producing leading-edge DRAM and the only domestic producer of HBM, a position bolstered by $6.165 billion in CHIPS Act funding finalized in late 2024 and a broader commitment announced last year to invest $200 billion in U.S. semiconductor manufacturing and research over the long term. The company began construction in January on a planned $100 billion semiconductor complex in Clay, New York, that will eventually add significant domestic capacity — though, per the company's own timeline, not soon enough to meet current demand. Micron's own market projections suggest the broader HBM market will grow at a compound annual rate of roughly 40% through 2028, expanding from an estimated $35 billion in 2025 to approximately $100 billion within a few years. A Stock on an Extraordinary Run The earnings reaction adds to what's already been a remarkable run for Micron shares, which have climbed roughly 700% over the past year as investors piled into the AI memory trade. The stock's after-hours pop put shares above $1,199, pushing Micron's market capitalization to roughly $1.16 trillion. Bank of America has set a price target of $1,500 on the stock, according to recent analyst commentary, though some valuation models suggest shares may already be trading above fair value at current levels. With rival memory makers Samsung and SK Hynix also racing to expand their own HBM production, the central question for Micron's next several quarters isn't whether AI memory demand will hold up — it's whether the industry's notorious history of overbuilding capacity eventually catches up with today's extraordinary pricing and margins. For now, Micron's results suggest that reckoning, if it comes, remains some distance away.