On a Friday in early June, markets from Seoul to Tokyo and Shanghai felt the same tremor, carried across the Pacific from a single earnings-guidance note. Broadcom, a maker of the chips that power the artificial intelligence boom, offered an outlook that did not match the lofty hopes built around it, and investors who had ridden the rally began to take their gains and ask harder questions about margins. The sharpest damage fell on South Korea, where two memory-chip giants carry much of the national index and where the won slid to its weakest level against the dollar since 2009. Whether this is
Broadcom Guidance Sparks Asian Tech Selloff, with South Korean Chip Stocks Triggering Trading Halt
A five-minute halt was imposed after the Kospi 200 Futures fell more than 5%
Mark
Start with the halt. A five-minute pause seems small. Why does it matter?
Mimi
It tells you how concentrated the Korean market is. SK Hynix and Samsung together are about half of the Kospi's market value, so when both fall hard, the index follows. The curb was triggered when Kospi 200 Futures dropped more than 5%.
Luke
And that's a mechanical trigger, not a verdict. The halt says the drop crossed a threshold. It doesn't say why the selling happened.
Mark
What is the reported why?
Mimi
Broadcom's guidance fell short of high expectations, and its shares fell nearly 13% overnight. The worry is that AI spending may come with margin pressure.
Luke
Careful, though. That margin concern is the framing of the report, not a figure we've been shown. The piece doesn't give Broadcom's guidance numbers or say what margins it implied.
Mark
Is this a real turn or just a pause?
Mimi
Analyst Han Ji-young of Kiwoom Securities calls it a pause after rapid gains, not something driven by earnings.
Luke
That's one analyst's read. It may be right, but it's an interpretation, and the piece doesn't test it against other views.
Mark
And the won?
Mimi
It hit its weakest against the dollar since 2009, with the dollar reaching 1,549.25 won intraday, and foreign investors stayed net sellers.
Luke
Worth noting the article doesn't say how much the currency drove the equity drop versus the Broadcom news. Both are present; the weighting is unknown.
Le Pouls
- Kospi was halted for five minutes after its futures index plunged more than 5%, a circuit breaker that rarely comes without alarm.
- SK Hynix fell as much as 9.6% and Samsung as much as 7.5%, dragging the whole index down with them since the two make up about half its value.
- Broadcom's guidance fell short of inflated expectations, and its shares had already tumbled nearly 13% overnight, sending a shiver through Nasdaq and into Asia.
- Foreign investors kept selling Korean equities while the won hit a 2009-era low near 1,549 per dollar, adding currency pressure to the selloff.
- Analysts call it a pause after steep rallies rather than an earnings crisis, but traders are watching whether margin pressure in the AI spending boom keeps weighing on chip valuations.
On a Friday in early June, markets from Seoul to Tokyo and Shanghai felt the same tremor, carried across the Pacific from a single earnings-guidance note. Broadcom, a maker of the chips that power the artificial intelligence boom, offered an outlook that did not match the lofty hopes built around it, and investors who had ridden the rally began to take their gains and ask harder questions about margins. The sharpest damage fell on South Korea, where two memory-chip giants carry much of the national index and where the won slid to its weakest level against the dollar since 2009. Whether this is a pause in a long climb or the first sign of a deeper reckoning is a question the coming weeks will answer.
On Friday morning in Seoul, the Kospi had been sliding for most of the session when the exchange finally stopped the clock. A five-minute halt was triggered after the Kospi 200 Futures index dropped more than 5%, a curb meant to slow excessive swings.
The trigger came from the United States. Broadcom, a major AI chip maker, issued guidance that disappointed investors whose expectations had risen high. Its shares fell nearly 13% overnight, and the pain spread through the Nasdaq into Asian markets, with South Korea hit hardest. Behind the selling lies a growing worry that the AI spending boom may squeeze margins.
Two companies define the Korean picture. SK Hynix, a key supplier of high-bandwidth memory to Nvidia, sank as much as 9.6%, while Samsung Electronics, the world's largest memory-chip maker, lost as much as 7.5%. Together they account for about half the Kospi's market value, so their fall pulled the whole index down.
Kiwoom Securities analyst Han Ji-young read the move as a breather after steep run-ups rather than a verdict on corporate earnings. Traders, he said, were taking profits after strong gains in U.S. tech stocks.
Japan felt the tremor too. Chip-related names led the Nikkei lower, with Tokyo Electron down 7.1% and Advantest down 4.9%. In China, chip stocks that had rallied earlier in the week gave ground.
In Korea, currency weakness deepened the strain. Foreign investors remained net sellers, and the won slid to its weakest level against the dollar since 2009. The coming days will show whether Broadcom's margin signals keep weighing on AI chip valuations, and whether foreign money keeps leaving Korean shares.
On Friday morning in Seoul, the Kospi spent most of the session down around 5%, and then the exchange operator stopped the clock. A five-minute halt was imposed on the benchmark's constituents after the Kospi 200 Futures index fell by more than 5%, the threshold for a curb designed to limit excessive swings.
The trigger came from the United States. Broadcom, the American AI chip maker, issued guidance that fell short of investor expectations that had climbed high. Its shares tumbled nearly 13% in the overnight session, and the weakness in the tech-heavy Nasdaq spilled into Asian markets, with South Korea hit hardest. The concern behind the selling is that the AI spending boom may carry growing margin pressure.
Two companies dominate the Korean picture. SK Hynix, a leading supplier of high-bandwidth memory to Nvidia, fell as much as 9.6% by early afternoon. Samsung Electronics, the world's largest memory-chip maker, lost as much as 7.5%. Together they make up about half of the Kospi's total market capitalization, which is why their drop pulled the whole index down with them. SK Hynix was on track for a third consecutive session of declines, and Samsung for a second straight day.
Kiwoom Securities analyst Han Ji-young framed the move as a breather after steep run-ups. Broadcom's results failed to meet the hopes of some investors, he said, and traders took profits after recent strong gains in U.S. tech stocks. "The recent stock market correction is not driven by fundamental factors such as corporate earnings," Han said. "Rather, it appears to be a pause following the market's rapid gains."
Japan felt it too. Semiconductor-related names led the Nikkei Stock Average lower, and the benchmark was down 1.6% in early afternoon trading. Tokyo Electron, which makes chip-production equipment, was down 7.1%. Renesas Electronics was recently 6.3% lower, and chip-testing-equipment maker Advantest was down 4.9%.
Chinese chip stocks, which had rallied earlier in the week, also gave ground. Semiconductor Manufacturing International, China's largest chip maker, shed 2.3% in Hong Kong. In Shanghai, GigaDevice Semiconductor lost 3.5%, and Foxconn Industrial Internet dropped 2.3%.
In South Korea, currency weakness added to the pressure. Foreign investors remained net sellers on Friday, and the won fell to its weakest level against the U.S. dollar since 2009, as the greenback reached an intraday high of 1,549.25 won.
What to watch next is whether Broadcom's margin signals continue to weigh on AI chip valuations, and whether foreign investors keep selling Korean equities while the won stays weak.
Citations marquantes
The recent stock market correction is not driven by fundamental factors such as corporate earnings. Rather, it appears to be a pause following the market's rapid gains.— Han Ji-young, analyst, Kiwoom Securities
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