HBM Memory: SK hynix, Samsung, Micron — 2026-09-18
SK hynix has reportedly begun mass shipments of 16-layer HBM4 for Nvidia’s next-gen "Vera Rubin" platform, solidifying its lead in advanced packaging. Meanwhile, Micron faces potential supply disruptions from labor disputes in Taiwan, even as it targets doubling its HBM wafer capacity to 100,000 per month by year-end. Samsung continues to close the market share gap with SK hynix, driven by rising HBM4 yields and aggressive capacity expansions.
HBM Memory: SK hynix, Samsung, Micron — 2026-09-18
SK hynix initiates mass shipments of 16-layer HBM4 for Nvidia
According to a supply chain report published on September 16, 2026, SK hynix has started mass shipping 48GB 16-layer HBM4 units for Nvidia’s "Vera Rubin" AI platform. This move marks a critical milestone in the third quarter, positioning SK hynix ahead of competitors in the high-capacity segment required for next-generation AI accelerators. The early adoption of 16-layer stacks addresses the increasing bandwidth demands of large language models and reinforces SK hynix’s dominant position in Nvidia’s supply chain.
Micron targets 100k wafer monthly capacity amid labor tensions
Micron is aggressively expanding its High Bandwidth Memory (HBM) production, aiming to double its monthly capacity to approximately 100,000 wafers by the end of 2026. However, this expansion faces headwinds from labor disputes at its Taiwan facilities, where unions are demanding a share of operating profits and threatening strikes that could disrupt global memory supply. If the production ramp proceeds as planned, Micron could significantly narrow the gap with Korean rivals, but any supply interruption would exacerbate the current DRAM shortage.
Samsung and SK hynix shift focus to 8-layer HBM4 for stability
Both Samsung Electronics and SK hynix are increasing the shipment ratio of 8-layer HBM4 units to Nvidia in the second half of 2026. While 12-layer and 16-layer products are being prepared for the Vera Rubin platform, the shift to 8-layer configurations is driven by thermal management challenges and Nvidia’s strategy to diversify its supply options. This move suggests that while higher-layer counts are technically feasible, yield rates and heat dissipation remain critical bottlenecks for mass deployment.
Apple accepts 30-40% DRAM price hikes from Samsung
Samsung Electronics has successfully enforced a 30-40% price increase for its DRAM chips on major customers, including Apple, which had previously resisted higher costs. The acceptance of these hikes underscores the severe supply tightness in the memory market, where AI-driven demand for HBM has cannibalized conventional DRAM capacity. This pricing power for Samsung signals a strong earnings outlook for the third quarter, with server DRAM fixed trading prices having surged 5.5 times year-over-year.
Local view
Korean financial media are closely monitoring the divergence in analyst ratings between SK hynix and Samsung. While some analysts have lowered SK hynix’s target price due to competition concerns, others highlight Samsung’s rising HBM market share, which reached 33% in Q2 2026, up from 21% previously. The local press emphasizes that despite stock volatility caused by "AI slowdown" rumors, actual order books for HBM remain robust, with inventory levels at both companies dropping below 10 days of supply.
Context & numbers
- HBM Market Share: SK hynix holds approximately 50% of the HBM market, followed by Samsung at 33%, and Micron at 18%.
- DRAM Inventory: Major manufacturers are operating with less than 10 days of finished DRAM inventory, a historically low level driven by HBM4 production consuming three times the wafer capacity of conventional DRAM.
- Price Trends: Server DRAM fixed trading prices have increased by 5.5 times over the past year. Forecasts suggest HBM average selling prices could rise by another 79% in 2027.
- Micron Capacity Target: Micron aims for ~100,000 HBM wafer starts per month by end-2026, up from ~50,000 previously.
On the radar
- US Manufacturing Talks: SK hynix is reportedly in discussions with Intel to potentially lease an Ohio plant or form a joint venture for US-based memory chip manufacturing, which could mark the first major HBM fab in the US.
- Micron Labor Strike: The outcome of the labor negotiations at Micron’s Taiwan facility is a key short-term risk factor for global HBM supply chains.
This content was collected, curated, and summarized entirely by AI — including how and what to gather. It may contain inaccuracies. Crew does not guarantee the accuracy of any information presented here. Always verify facts on your own before acting on them. Crew assumes no legal liability for any consequences arising from reliance on this content.
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