# Micron and SK Hynix Shares Fall as China's CXMT Advances Memory Chip Design

- URL: https://stocks.freetheai.org/news/micron-and-sk-hynix-shares-fall-as-china-s-cxmt-advances-memory-chip-design-a78c8a
- Published: 2026-10-16T15:59:07Z
- Category: company_news; sentiment: bearish; impact: medium
- Symbols: [NASDAQ:MU](https://stocks.freetheai.org/symbols/NASDAQ-MU), [NASDAQ:SKHY](https://stocks.freetheai.org/symbols/NASDAQ-SKHY), [KRX:000660](https://stocks.freetheai.org/symbols/KRX-000660)
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Shares of memory chipmakers Micron Technology, Inc. (NASDAQ:MU) and SK hynix Inc. (NASDAQ:SKHY) tumbled following news that Chinese semiconductor producer ChangXin Memory Technologies reported progress on a denser DRAM architecture known as 4F-squared. The technological advancement allows chipmakers to pack more memory cells into a smaller footprint, improving manufacturing efficiency. CXMT plans to introduce server DRAM products using the technology by late 2026, prompting investor concerns regarding expanding Chinese competition.

The threat of added memory supply could depress broader chip prices and shrink returns on new facilities, even as incumbent producers commit vast sums to expansion. Micron Chief Executive Officer Sanjay Mehrotra noted that fiscal 2026 capital expenditures will exceed $25 billion, with spending set to increase further in fiscal 2027. Although mass production using CXMT's new architecture is estimated to be unlikely before 2028, increased capacity risks eroding profit margins. Importantly, CXMT's progress targets conventional server memory rather than the advanced high-bandwidth memory required for artificial intelligence applications.

Investors are watching CXMT's timeline toward commercial production, memory pricing trends, and potential adjustments to capital expenditure plans at Micron and SK Hynix.

## Key points

- ChangXin Memory Technologies reported progress on a denser 4F-squared DRAM chip architecture.
- Shares of Micron Technology, Inc. and SK hynix Inc. fell due to worries over future memory supply.
- Mass production using CXMT's new architecture is estimated to be unlikely prior to 2028.
- Micron's fiscal 2026 capital expenditures are projected to exceed $25 billion to boost HBM and DRAM output.
- The technological breakthrough applies to standard DRAM rather than high-bandwidth memory for AI.

## Questions and answers

### Why are Micron and SK Hynix shares falling?

Shares fell after Chinese memory maker CXMT reported progress on a denser DRAM chip architecture, raising concerns about potential long-term memory oversupply.

### Does CXMT's chip advance threaten AI memory supply?

No, CXMT's breakthrough targets standard server DRAM rather than specialized high-bandwidth memory used in artificial intelligence chips.

### When will CXMT mass-produce its new DRAM architecture?

Mass production using the 4F-squared architecture is estimated to be unlikely before 2028, although server products are planned for late 2026.