TheTechno Optimist.

Micron Technology—Micron signs 16 strategic customer agreements; 14 worth $100B in minimum revenue through 2030HBM4Micron Technology—Micron begins HBM4 volume shipments to NVIDIA Vera Rubin platformHBM4Micron Technology—Micron holds 18% HBM market share; SK Hynix leads at 50%, Samsung at 33%

Micron Technology

HBM4, AI memory, DRAM

USpublic~53,000 staffest. 1978micron.com (opens micron.com)Checked 10 Oct

The brief

Analyst view
  • Micron began shipping HBM4 in March 2026 for NVIDIA Vera Rubin, hitting $1B sales in 4 months.
  • In Q2 2026, Micron held 18% HBM market share; it aims for 20% by year-end.
  • The company signed 16 strategic customer agreements with hyperscalers for long-term HBM supply.

Technical approach

As reported
Stacked Memory

Vertical die stacking raises bandwidth

HBM4 stacks multiple DRAM dies with micro-bumps. Vertical channels (TSVs) connect all layers, multiplying bandwidth while reducing power per bit.

Ramp Speed

2x faster yield curve than HBM3E

HBM4 production doubled its yield ramp speed. Micron targets 15,000 wafers/month by end of 2026, up from slower previous-gen builds.

Partnerships

Strategic customer agreements for supply stability

Micron signed 16 multi-year deals with hyperscalers, securing demand while proving long-term reliability against Samsung and SK Hynix.

Primer