TL;DR
Micron's fiscal Q4 2026 revenue hit a record $54.23 billion, up 379% year-over-year, as AI hyperscalers prepaid $22 billion to lock in future memory supply, signaling the traditional boom-bust memory cycle may be structurally broken.
What happened
- $54.23 billion in Q4 revenue: up 379% year-over-year and 31% quarter-over-quarter, the sixth consecutive quarterly record.
- Full fiscal year 2026 revenue reached $133.19 billion, up 256% from fiscal 2025's $37.38 billion; GAAP net income hit $84.97 billion for the year.
- Non-GAAP gross margins reached 87%, beating Micron's own guidance of 86.25%; operating income surged more than 1,000% year-over-year.
- $22 billion in upfront cash and commitments from hyperscalers paid before delivery, a structural departure from the industry's traditional spot-contract model.
- Q1 2027 guidance set at $61.5 billion in revenue (midpoint), with non-GAAP EPS guided to $38.15, both well above analyst consensus.
Why it matters
- HBM supply for all of calendar 2027 is largely sold out: CEO Sanjay Mehrotra confirmed agreements covering the vast majority of 2027 HBM output, with significant year-over-year price increases locked in.
- The memory cycle is breaking: customers financing a supplier's expansion years in advance replaces the 30-year pattern of quarterly spot contracts, reducing Micron's demand volatility and giving it multi-year pricing power.
- HBM scarcity is structural, not cyclical: each HBM stack consumes 2.4 times the wafer capacity of standard DRAM, and new cleanroom construction takes 18 to 24 months before a single chip ships.
- AI demand is tightening conventional memory too: Reuters reported Micron orders exceed production capacity across all product lines, lifting prices for standard DRAM and NAND, a direct tailwind for Samsung and SK Hynix ahead of their Q3 reports.
- Micron is co-developing NV-HBM with Nvidia: a custom HBM4E implementation for Nvidia's next-generation GPUs, deepening a sole-source relationship that competitors cannot easily replicate.
What to watch next
- Whether Q1 2027 revenue clears $61.5 billion: Micron has beaten consensus six consecutive quarters; a miss would be the first signal that hyperscaler prepayment commitments are softening.
- Samsung and SK Hynix Q3 earnings: Micron's blowout results set a high bar; divergence in Korean competitors' margins would reveal whether Micron's HBM execution lead is widening.
- Capex trajectory and cleanroom completions: CFO Mark Murphy flagged construction spending growing much faster than equipment spending in H2 fiscal 2027; watch for groundbreaking announcements that would set the supply ceiling for 2028 and 2029.
Originally published on Present of AI, a daily source-linked AI news timeline. Read the full timeline or browse the open dataset.