Full Breakdown
US Chip Stocks Slide as China’s CXMT Sparks Competition Concerns
By Drooid · · How we work
Market Impact and Data
On Oct 13, shares of U.S. semiconductor companies fell, with the Philadelphia Semiconductor Index (.SOX) down 1.5% for a fifth consecutive session and hitting its lowest level in about four weeks. Memory-focused firms led the decline: Micron slipped 4.5% to its lowest price since Sept 16, marking a fourth straight daily drop; SanDisk fell 4.3%, Seagate 5.9%, and Western Digital 5.8%. South Korean memory leaders Samsung and SK Hynix each fell more than 7% and 10%, respectively, after media reports said Chinese memory chip maker CXMT had achieved “key progress” on a new cell architecture that could raise memory density. Broadcom, Nvidia, Intel, AMD and Marvell also posted modest losses, extending the sector-wide weakness despite a year-to-date gain of over 70% in the index driven by AI-related demand expectations.
Industry Reactions
Robert Pavlik, senior portfolio manager at Dakota Wealth, described the sell-off as a rapid profit-taking move, noting that “when you back off and realize there might be competition coming, all the sheep run to the door at the same time.” Broadcom CEO Hock Tan, speaking earlier in the week, likened current AI-sector investments to “casino gambling,” underscoring investor unease about the sustainability of AI-driven spending.
Official Statements & Responses
Broadcom’s leadership highlighted the need for caution, emphasizing that the sector’s recent rally may be overstretched. No formal comment was released by CXMT, Samsung, SK Hynix or U.S. chipmakers regarding the reported technological advance.
Verbatim Quotes
- “When you back off and realize there might be competition coming, all the sheep run to the door at the same time,” — Robert Pavlik
The episode illustrates how reports of a potential Chinese breakthrough in memory technology can quickly reshape market sentiment, prompting a broad retreat across both memory and non-memory semiconductor stocks despite the overall bullish backdrop from AI demand.
