Micron's revenue increased fourfold due to the demand for AI memory, resulting in gross margins surpassing 81 percent.

      Micron's Q3 revenue reached nearly $42 billion, an increase of four times compared to just over $9 billion a year ago, driven by a surge in AI memory demand. The company's gross margins exceeded 81 percent, and its guidance for Q4 is $50 billion.

      On Tuesday, Micron Technology announced fiscal third-quarter revenue of almost $42 billion, significantly surpassing Wall Street predictions and quadrupling from the previous year's revenue. The company's performance highlights its strong position in the AI memory market, having seen its stock rise around 700 percent over the last year.

      Adjusted earnings were more than $25 per share, surpassing analyst forecasts of about $21. GAAP net income was over $28 billion, approximately $25 per share, up from nearly $2 billion in the same quarter last year. Gross margins improved to over 81 percent, rising from 69 percent in the last quarter and 27 percent year-over-year.

      Revenue growth is the key aspect, with Micron earning close to $42 billion, against an anticipated $36 billion, primarily due to heightened demand for high-bandwidth memory (HBM), which are the stacked DRAM chips utilized next to GPUs in AI accelerators made by companies like Nvidia and Google. HBM has become the limiting factor in expanding AI infrastructure, and Micron is one of only three global manufacturers of this product.

      CEO Sanjay Mehrotra noted that Micron can currently satisfy only half to two-thirds of the demand for HBM. The company has sold out its entire 2026 HBM supply through multi-year contracts and has received $22 billion in customer cash deposits, representing prepayments from hyperscalers eager to secure supplies.

      Micron’s advanced HBM4 chips are ramping up production at double the speed of the previous HBM3E generation, with HBM4 revenue already surpassing one billion dollars. This technology is vital for the latest accelerators from Nvidia and Google, where memory bandwidth increasingly influences inference performance.

      Looking ahead, Micron provided an optimistic Q4 revenue projection of around $50 billion, with a margin of one billion, in contrast to analyst estimates of about $44 billion and last year’s revenue exceeding $11 billion. Additionally, the company increased its full-year capital expenditure outlook to above $25 billion from a previous target of $20 billion to boost HBM and advanced DRAM production capabilities.

      Micron’s market capitalization surpassed one trillion dollars on May 26, marking it as the latest memory chip manufacturer to achieve this milestone amid the AI-driven memory supercycle affecting valuations throughout the semiconductor sector. The stock's notable 700 percent rise over the past year illustrates a shift in how the market values memory, viewing it not merely as a cyclical commodity but as foundational to AI infrastructure.

      The company anticipates the total addressable market for HBM will expand at a compound annual growth rate of about 40 percent through 2028, growing from around $35 billion in 2025 to approximately $100 billion. Micron aims to return 100 percent of excess free cash flow to shareholders, a strategy made possible by its cash deposit program that mitigates the capital risk of its growth.

      However, there are important considerations. Micron is the smallest among the three HBM suppliers, trailing SK Hynix and Samsung, and its share of Nvidia's HBM4 allocations is the least among them. The overall memory market is also evolving, with Chinese manufacturers like CXMT aggressively entering consumer DRAM segments that the leading three have deprioritized in favor of AI chips.

      Memory pricing is inherently cyclical, and the current supercycle relies on continuing strong capital expenditures by hyperscalers. If spending on AI infrastructure slows or HBM supply catches up with demand, Micron’s current margin levels could quickly decrease. The reported 81 percent gross margin is historically remarkable for a memory company and reflects both the shortage dynamics as well as product excellence.

      At present, the data speaks volumes. Revenue that has quadrupled in a year, margins that have tripled, and a guidance forecast exceeding estimates by over $6 billion are exceptional outcomes for any company, especially one that faced losses two years ago. Micron’s financial results underscore the intensifying AI memory shortage and indicate that firms producing chips for AI accelerators are gaining value at a pace that the market is still adjusting to recognize.