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World stocks hit one-month low as chip rout worsens

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Yahoo Finance

July 28, 2026
World stocks hit one-month low as chip rout worsens

Global markets are reeling as a massive sell-off in AI-related chip stocks triggers circuit breakers in South Korea. Investors are retreating amid fears of over-leveraged AI infrastructure spending, rising U.S. interest rates, and intensifying competition from Chinese chip manufacturing.

Global Markets Shaken by AI Chip Sell-Off

Global financial markets are currently experiencing significant volatility as a concentrated sell-off in artificial intelligence-related stocks gains momentum. Investors, previously emboldened by the rapid expansion of AI infrastructure, are now engaging in a sharp retreat, leading to a one-month low for world stocks. This shift in sentiment is primarily driven by mounting skepticism regarding the sustainability of the current AI boom and the massive capital expenditure required to maintain it.

The South Korean Market Crisis

South Korea’s Kospi index has found itself at the epicenter of this downturn, suffering a dramatic decline of over 10% on Tuesday. The intensity of the sell-off was such that market authorities were forced to trigger circuit breakers—a mechanism designed to pause trading and mitigate panic. This marks the eighth time this year that the Kospi has required such intervention. The scale of the decline is historic, with the index currently facing its largest monthly drop on record, even surpassing the volatility observed during the 1997 Asian financial crisis.

Semiconductors Under Pressure

At the core of the market turmoil are major semiconductor manufacturers, specifically Samsung Electronics and SK Hynix. Both firms saw their shares plummet by more than 10% as investors reassessed the long-term profitability of the chip sector. This local decline mirrors broader global trends, evidenced by Nvidia’s recent 5% drop in New York, which saw the tech giant relinquish its title as the world’s most valuable listed company to Apple.

Strategic Concerns: Debt and Competition

Investors are increasingly wary of the financial health of AI-focused companies, particularly regarding the high levels of borrowing used to fund massive data center expansion projects. This financial anxiety is compounded by geopolitical and technological shifts; specifically, reports indicating that China has begun mass production of homegrown deep ultraviolet (DUV) chip-making tools. This development threatens the dominance of established chipmakers by introducing cheaper, localized competition into the global supply chain.

Macroeconomic Headwinds

Beyond industry-specific fears, the broader macroeconomic environment is contributing to the bearish outlook. Analysts point to the rising probability of a U.S. interest rate hike as a significant factor dampening investor mood. Higher interest rates typically increase the cost of borrowing, which is particularly detrimental to high-growth tech firms that rely on debt to fund their aggressive expansion plans.

Future Implications

The rapid rise and subsequent correction of the Kospi—which had more than tripled in value in the 12 months leading to June before shedding a third of that value—highlights the fragility of the recent AI-driven rally. Moving forward, the market is likely to remain volatile as investors wait to see if the demand for AI infrastructure can justify the massive capital investments currently being made, or if the sector is entering a period of prolonged consolidation.

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