Micron Technology (MU) FY2026 Q3 Earnings: Revenue Surges 346% YoY, Gross Margin Hits Record 84.9%, Q4 Guidance Crushes Estimates

Key Takeaways

Micron Technology delivered an explosive FY2026 third fiscal quarter (ending May 31, 2026). Revenue surged approximately 346% year-over-year to $41.46B, while Non-GAAP adjusted EPS reached $25.11 — more than 12 times the year-ago level — both far exceeding Wall Street consensus estimates. Adjusted gross margin hit a record 84.9%, more than double the level from a year ago. Most critically, Micron's Q4 FY2026 guidance came in 15–22% above expectations on both revenue and EPS, decisively refuting near-term concerns about AI memory demand cooling and peak earnings. The stock surged more than 16% in after-hours trading.

Detailed Breakdown

1. Overall Revenue and Earnings Performance

• Quarterly Revenue: $41.46B, +346% YoY, beating consensus of ~$35.69B by approximately $5.77B (+16%)
• Non-GAAP EPS: $25.11, +1,200%+ YoY, beating consensus of $20.71 by $4.40 (+21.25%)
• Adjusted Gross Margin: 84.9%, beating consensus of 81.9% by ~3 percentage points; more than double the ~40% level from a year ago
• Adjusted Operating Income: ~$33.68B, implying an adjusted operating margin of approximately 81.2%
• Revenue, EPS, and gross margin all set new single-quarter records, and all accelerated sequentially versus Q2 FY2026

2. Data Center and AI Business (Primary Highlight)

• Core Data Center Revenue: $11.52B, approximately 7.5× the year-ago level, beating analyst consensus of ~$6.80B by approximately 69% — the single most important beat in the report
• Cloud Storage Revenue: $13.77B, approximately 4× year-over-year, beating consensus of ~$10.69B by approximately 29%
• Combined data center + cloud storage revenue: $25.29B, representing approximately 61% of total revenue
• HBM Revenue: Exceeded $1B for the second consecutive quarter; full-year 2026 HBM capacity is fully committed with long-term supply agreements with key AI customers
• AI server demand continues to drive sustained growth in HBM, high-capacity DRAM, and enterprise SSDs

3. Other Segment Performance

• DRAM Revenue: More than tripled year-over-year (+300%+)
• NAND Flash Revenue: More than doubled year-over-year (+200%+)
• Mobile and Client Business: Revenue ~$11.52B, beating consensus of ~$9.73B by approximately 18%, demonstrating that storage pricing power is spreading beyond AI into broader end markets
• Traditional end markets (PC, smartphone, gaming) are also seeing tightening supply as advanced capacity is consumed by AI demand

4. Q4 FY2026 Guidance (Key Upside Driver)

• Q4 Revenue Guidance: Range $49B–$51B; midpoint $50.00B, approximately +15.6% above pre-guidance consensus of ~$43.24B
• Q4 Non-GAAP EPS Guidance: Range $30–$32; midpoint $31.00, approximately +22.5% above pre-guidance consensus of ~$25.31
• Q4 Capital Expenditure Guidance: ~$10B, approximately +12% above consensus of ~$8.9B; incremental investment focused on HBM, advanced DRAM, and advanced packaging capacity
• At guidance midpoints, Q4 revenue would grow approximately 20.6% sequentially from Q3's $41.46B, indicating continued acceleration rather than peak earnings

5. AI Memory Supply and Demand Outlook

• CEO Sanjay Mehrotra stated: "The AI era is increasing the criticality of memory and storage, and this trend is still in a very early stage"
• HBM supply-demand tightness expected to persist through 2027 and beyond; overall memory supply constraints to gradually improve from 2028, with no clear visibility on when supply will fully catch up with demand
• Surging demand from AI training, inference, and AI agent applications continues to drive structural upward pressure on memory and storage requirements at data centers

6. Market Context and Investor Considerations

• The day before earnings, South Korean media reported rival SK Hynix was slowing HBM4 expansion, sending Micron shares down approximately 13% and reigniting AI demand concerns
• Micron's results directly refuted those concerns: core data center revenue beat consensus by nearly 70%, providing the clearest data-point rebuttal possible
• Post-earnings, shares that had closed down ~0.4% surged more than 16% in after-hours trading; overnight price ~$1,183 (+12.8%)
• The stock had already rallied nearly 270% YTD ahead of the print, raising the performance bar exceptionally high — clearing it by this margin underscores the genuine strength of the AI memory upcycle
• Core risk remains the inherent cyclicality of the memory industry: as new capacity gradually comes online, the sustainability of current record-high margins and pricing remains the key long-term question