Business

Chip firms fall in US and Asia as AI jitters rattle investors

BBC Business · 2026-07-28

AI SUMMARY

• What happened: Major semiconductor companies' shares fell sharply in the US and Asia, with South Korea's Kospi index experiencing a temporary trading halt after dropping 8% and ultimately settling around 10% lower. • Why it matters: The decline is driven by investor concerns over AI stocks, particularly following a significant drop in Nvidia's shares, which has raised questions about the profitability of AI technologies amid substantial investments in the sector. • What to watch next: Investors will be closely monitoring the tech sector's volatility and any developments regarding Nvidia's potential $250 billion investment in OpenAI, as well as the broader implications for AI-related stocks.

**Chip Firms Experience Significant Decline Amid AI Stock Sell-Off**

Shares in major semiconductor companies have seen a sharp decline in both the United States and Asia, driven by increasing investor concerns surrounding artificial intelligence (AI) stocks. This downturn has particularly impacted South Korea's benchmark Kospi index, which experienced a temporary trading halt on Tuesday morning after plummeting by 8%. Once trading resumed, the index continued to decline, ultimately settling around 10% lower.

The sell-off was primarily led by technology firms, with notable declines from industry giants Samsung Electronics and SK Hynix, both of which saw their stock prices drop by over 10%. This trend follows a significant dip in Nvidia's shares, which fell by 5% in New York on Monday. The decline in Nvidia's stock resulted in the company losing its title as the world's most valuable publicly traded company to Apple.

The Kospi index, known for its heavy weighting in technology stocks, has faced increased volatility this year, having already triggered circuit breaker mechanisms eight times to mitigate panic selling. Since peaking in mid-June, the index has lost approximately one-third of its value, a stark contrast to its more than 100% increase from the beginning of the year to that point.

In the United States, SK Hynix's shares fell by 7.5% on Monday, dropping significantly below the $149 offer price established during its record-breaking debut on the Nasdaq on July 9. The broader trend of declining tech stocks has also affected Japan's Nikkei 225 index, which was down nearly 4.5% on Tuesday morning.

The recent downturn in AI-related stocks coincides with reports that Nvidia is in discussions to invest around $250 billion in OpenAI as part of a large-scale data center project. This news has raised questions among analysts regarding the profitability of AI technologies, especially given the substantial investments being made by governments and companies in the sector.

As the market continues to react to these developments, investors are closely monitoring the situation, weighing the long-term potential of AI against the immediate volatility in the tech sector.

Source: BBC Business
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