
KOSPI drops more than 8 percent, triggering first 20-minute trading halt in 16 sessions
AI-generated summary
South Korea's benchmark KOSPI index fell below 5,000 points on Friday following a tech sell-off on Wall Street. The decline was driven by fears that Democratic Party victories in the U.S. midterm elections could slow AI data center construction. Samsung Electronics and SK hynix, which account for nearly half of the KOSPI market, saw shares plunge more than 10 percent.
SEOUL, Nov. 6 (Yonhap) -- South Korea's benchmark Korea Composite Stock Price Index (KOSPI) sank below 5,000 points Friday, hit by fears that a Democratic Party victory in the U.S. midterm elections could slow the pace of data center construction for artificial intelligence (AI).
Taking a cue from a tech sell-off on Wall Street overnight, the KOSPI plummeted more than 8 percent, prompting trading on the market to be halted for 20 minutes.
It was the first time in 16 trading sessions that the KOSPI's 20-minute trading halt was activated.
Shares of Samsung Electronics and SK hynix, which account for nearly half of the KOSPI market, plunged more than 10 percent in morning trading.
With Democrats winning majorities in both the U.S. Senate and House of Representatives, analysts have predicted that the power of U.S. President Donald Trump will be weakened during the final two years of his term.
One of the key things to watch going forward is whether a Democrat-controlled Congress slows the pace of building data centers for artificial intelligence.
As the Democratic Party won the gubernatorial leadership in Texas, a key U.S. state in pushing for AI data centers, the tech-heavy NASDAQ slumped more than 5 percent overnight.
Some analysts expected volatility to remain elevated in the local stock market.
Han Ji-young, an analyst at Kiwoom Securities, said that volatility in the local stock market is likely to continue after the sharp decline.
The fear gauge of South Korea's stock market has also jumped as Wall Street's tech sell-off hurt global markets.
The KOSPI 200 volatility index (VKOSPI) rose to a three-month high of 64.74 on Friday, according to the Korea Exchange.
In a research note, Daishin Securities said the market's reaction to the AI-driven rout was excessive.
Lee Kyung-min, an analyst at Daishin Securities, said that the Democratic Party's win may have prompted delays in the construction of AI data centers, but the likelihood of full-scale suspension of such build-out was low.
Finance Minister Lee Hyoung-il has vowed to take steps to cope with the excessive volatility in the local stock market.
Lee told a meeting with relevant ministers earlier in the day that the government "will preemptively set up measures and take them to prevent our stock markets from excessively responding" to the U.S. tech sell-off.
The finance minister said that South Korea will closely monitor external uncertainties but noted that the nation's economic fundamentals remain solid.
AI outlook โ possibilities, not facts
Volatility in South Korea's local stock market is likely to continue after the sharp decline.
Likely ยท Within days
The South Korean government will implement preemptive measures to prevent excessive market response to the U.S. tech sell-off.
Possible ยท Within weeks

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Heads of research centers at major domestic securities companies said that the KOSPI plunged as fears spread about a decline in AI investment due to concerns about strengthening data center regulations after the U.S. midterm elections, but that semiconductor performance was solid and the decline in stock prices was excessively reflected. The point to watch is whether foreign selling will slow down in the KOSPI range of 4,500 to 4,800.

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With the KOSPI plummeting below the 5,000 mark and a circuit breaker being activated, individual investors net bought more than 9 trillion won in Samsung Electronics and SK Hynix over the course of a month. Uncertainty caused by the results of the U.S. midterm elections and President Trump's announcement of reciprocal tariffs triggered a stock market crash, and experts analyzed the market as not reflecting traditional fundamental logic.