# Micron's biggest quarter ever: HBM sold out, margins near 81%
> Fiscal Q3 2026 reported June 24, record revenue on AI memory, data-centre revenue up ~150%, full-year HBM capacity already booked

**Meta:** type: event · date: 2026-06-24 · heads: Whose Money, The Quiet Shift · 9 takes · 3 lenses · 4 regions

## Summary

[Micron Technology](/en/entity/micron) reported fiscal Q3 2026 after the US close on 24 June, in what analysts
billed as its biggest quarter on record. Consensus pointed to roughly $34.7B revenue (~283% YoY growth)
and gross margin near 81%, company guidance had been ~$33.5B at ~81%. The driver is [high-bandwidth
memory](/en/entity/hbm): Micron began volume HBM4 (36GB, 12-high) shipments in calendar Q1 for [Nvidia's](/en/entity/nvidia)
[Vera Rubin](/en/n/nvidia-vera-rubin-hbm4-allocation) platform, with the ramp running roughly twice as fast as
HBM3E, and its data-centre revenue grew about 150% on HBM3E. Micron has said its entire 2026 HBM output is
already sold out. The same supply discipline tightening AI-accelerator memory is lifting commodity DRAM
and NAND prices downstream, a cost that flows through to PCs and phones.

## By the numbers

- ~$34.7B, consensus Q3 revenue (~283% YoY); company guidance ~$33.5B ±$750M.
- ~81%, guided gross margin (consensus reaching toward 81.6%).
- ~150%, data-centre revenue growth on HBM3E supply to AI accelerators.
- 2x, HBM4 ramp speed vs. the HBM3E ramp.
- >2.8 TB/s, bandwidth of Micron's 12-high HBM4 for Vera Rubin (>20% better power efficiency vs HBM3E).
- Sold out, Micron's full-year 2026 HBM capacity.

## Why it matters

Micron is the US-headquartered HBM supplier in a market otherwise led by Korea. A clean print at ~81%
margin validates the AI-memory supercycle as structural, not a spike, and confirms memory, not just
logic, as a value-dense chokepoint. It also sharpens the political stakes of the China memory probe
and CXMT's rise against the three incumbents.

## What to watch

- Q4 revenue/margin guidance, whether the supercycle is still accelerating.
- HBM4 yield and any Vera Rubin allocation gains vs. SK Hynix and Samsung.
- Pass-through of memory tightness into consumer DRAM/NAND prices through H2 2026.

## Regional takes (batched by bias / lens)

### unlabelled
- **Micron Technology (investor relations)** (United States, en) — Micron's own fiscal Q3 2026 release (reported after market close, June 24), revenue, gross margin, HBM4 ramp and next-quarter guidance.
  Source: https://investors.micron.com/
- **TradingKey (preview)** (Global, en) — 
  Source: https://www.tradingkey.com/analysis/stocks/us-stocks/261979099-micron-q3-earnings-preview-gross-margin-expected-break-80-mark-tradingkey
- **Money Morning** (United States, en) — 
  Source: https://moneymorning.com/2026/06/24/micron-technology-mu-earnings-q3-2026-hbm-ai-memory
- **indmoney** (India, en) — 
  Source: https://www.indmoney.com/blog/us-stocks/micron-earnings-preview-hbm-ai-memory-mu-stock
- **Yahoo Finance** (United States, en) — 
  Source: https://finance.yahoo.com/markets/stocks/articles/micron-reports-earnings-june-24-215600703.html
- **TradingKey (HBM sold out)** (Global, en) — 
  Source: https://www.tradingkey.com/analysis/stocks/us-stocks/261930650-micron-mu-hbm-ai-datacenter-sold-out-margin-expansion-fibonacci-breakout-memory-scarcity-guidance-raise-tradingkey
- **eciks** (Global, en) — 
  Source: https://eciks.org/10616-91575-micron-q3-earnings-june-24-2026

### markets/trading desk
- **IG** (United Kingdom, en) — Frames the print around three numbers: revenue (consensus ~$34.7B), the gross-margin line (guidance ~81%, consensus reaching toward 81.6%), and HBM4. Argues a clean beat on margin plus a healthy Q4 outlook cements HBM as a durable franchise rather than a cyclical memory spike.
  > "Consensus projects ~283% revenue growth and record gross margins near 81.6%, the print tests whether HBM is a durable franchise or a cresting cycle."
  Source: https://www.ig.com/en/news-and-trade-ideas/micron-q3-fy2026-earnings-preview-260623

### consumer-tech angle
- **TechTimes** (United States, en) — Reads Micron's record margins as an 'AI memory tax' on consumers: HBM capacity diverted to AI accelerators tightens commodity DRAM/NAND, pushing up PC and phone memory prices. The supply discipline that enriches Micron is the same force raising costs downstream.
  > "Record margins confirm an AI memory tax: capacity pulled into HBM tightens commodity DRAM and NAND, lifting the price of your next PC."
  Source: https://www.techtimes.com/articles/318825/20260622/micron-earnings-2026-record-margins-confirm-ai-memory-tax-your-next-pc.htm

## Across the graph
- Related: [[sk-hynix-samsung-market-cap-flip]], [[nvidia-vera-rubin-hbm4-allocation]]
- Entities: Micron, United States, Hbm, Nvidia

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