South Korea's Kospi index crashed nearly 11% on Tuesday as investors feared the artificial intelligence boom had become a bubble. The sell-off heavily impacted semiconductor giants Samsung Electronics and SK Hynix amid rising competition from China .
The 10.8% plunge of the Kospi index
The benchmark Kospi index closed at 6,023.66 on Tuesday, marking its lowest point since April and triggering temporary trading halts. According to the report, the decline was spearheaded by the semiconductor sector,with Samsung Electronics seeing its shares sink 13.4% and SK Hynix tumbling 14.7%.
This volatility highlights the extreme sensitivity of the South Korean economy to the semiconductor cycle. As a primary global producer of memory chips, South Korea's equity markets often act as a canary in the coal mine for the broader tech sector's health.
CXMT's 466% debut and the DUV tool threat
Investor panic was significantly amplified by the market entry of the Chinese memory chipmaker CXMT, which saw a 466% jump in its stock during its Monday trading debut. While those shares dipped 4% on Tuesday, the initial surge signaled a growing appetite for Chinese alternatives to established Korean and American chipmakers.
Further aniety stems from reports that China has comemnced mass production of homegrown deep ultraviolet (DUV) chipmaking tools. These tools are essential for printing the intricate circuit patterns on silicon wafers, and their domestic production in China threatens to reduce reliance on foreign technology providers.
From the Nikkei 225 to the Nasdaq's vulnerability
The contagion spread rapidly across Asian markets, with Tokyo's Nikkei 225 dropping 4% and Taiwan's Taiex skidding 4.7%. in the United States, the sell-off extended to industry leaders, as Nvidia dropped 5%, AMD sank 5.2%, and Micron Technology fell 2.3%.
As reported, this movement reflects a broader reassessment of AI valuations. Analysts at Morningstar suggest the market is adjusting to the realities of global supply chain shifts and intensifying technological competition. This trend echoes a wider vulnerability in growth stocks, which remain sensitive to the Federal Reserve's cautious stance on interest rates, as evidenced by the Nasdaq's decline on Monday.
Can ASML and Applied Materials withstand Chinese DUV production?
A critical unresolved question is the actual degree of threat posed by China's DUV tools to established equipment giants like ASML, Tokyo Electron, and Applied Materials. While some experts argue that patent protections and technological gaps will take years to close, the market is currently pricing in a faster disruption than previously anticipated.
It remains unclear whether the current rout is a temporary "knee-jerk overreaction," as some analysts claim, or the start of a structural downturn. The source primarily presents the tension between panicked investors and optimistic analysts, leaving the actual viability of China's new chip tools unverified by independent technical audits.
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