South Korea’s KOSPI tumbles 8%, triggering circuit breakers for sixth time this year
Currency traders watch monitors near a screen showing the Korea Composite Stock Price Index (KOSPI) at the foreign exchange dealing room of the Hana Bank headquarters in Seoul, South Korea, on Jul 7, 2026. (File photo: AP/Ahn Young-joon)
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SEOUL: South Korean shares fell 8 per cent on Tuesday, led by chipmakers, as investors questioned whether record earnings tied to AI could hold up.
The benchmark KOSPI was down 646.85 points, or 8.03 per cent, at 7,404.48, as of 4.53am GMT (12.53pm, Singapore time). It triggered circuit breakers at 4.51am GMT, halting trading for 20 minutes.
It was the sixth time circuit breakers were activated on the index this year during heightened volatility in semiconductor stocks, and the 12th time in history.
Shares of Samsung Electronics dropped 9.75 per cent even after the chipmaker forecast a 19-fold jump in second-quarter operating profit from a year earlier, underscoring concern that strong results may already be priced in after a sharp rally in memory-chip stocks.
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“It is good news but can’t be interpreted entirely as good news, as market expectations have grown too high to be raised further, fanning worries that high earnings will not be sustained,” said Seo Sang-young, an analyst at Mirae Asset Securities.
Peer chipmaker SK Hynix dropped 10.58 per cent, while chip stocks in neighbouring Japan also fell sharply, with memory chip maker Kioxia down more than 10 per cent.
“Although there is no issue when it comes to the chip sector’s fundamentals, such as earnings, there remains demand for profit-taking, while noises regarding AI and the chip sector are being raised again and again, raising market volatility,” said Han Ji-young, an analyst at Kiwoom Securities.
Samsung Electronics and SK Hynix have led the KOSPI’s rally this year rising more than 130 per cent and 220 per cent, respectively. Despite Tuesday’s losses, the KOSPI is still up 76 per cent year-to-date.
Among other index heavyweights, LG Energy Solution slid 8.74 per cent, after the battery maker said it expected its April to June operating profit to fall 77 per cent as sluggish electric-vehicle demand weighed on battery sales.
Hanwha Ocean plunged 24.29 per cent after Canada selected German submarines over South Korean competitors in a contract battle.
Of the total 912 traded issues, 192 shares advanced, while 698 declined. Foreigners were net sellers of shares worth 3.3 trillion won (US$2.16 billion).
The won was quoted at 1,523.5 per dollar on the onshore settlement platform, 0.43 per cent higher than its previous close at 1,530.0.
Source: Reuters/co
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