After weeks of relentless good points that made it the world’s best-performing main inventory index this 12 months, South Korea’s Kospi came upon Wednesday amid renewed jitters over a synthetic intelligence bubble, marking its steepest drop in three months.
The benchmark Kospi index plunged 2.9% to shut at 4,004.42, after sinking as a lot as 6.2% intraday to set off a sell-side circuit breaker, generally known as a sidecar, which suspends futures buying and selling for 5 minutes to cease panic promoting.
It marked the largest one-day fall since Aug. 1, when traders had been disenchanted by the Korean authorities’s tax reform plan.
The Kosdaq index additionally misplaced 2.7% to 901.89, marking the primary time since August 5, 2024 that each the Kospi and Kosdaq triggered sidecar halts on the identical day.
FOREIGN INVESTORS TAKE PROFIT
Overseas traders unloaded about 2.5 trillion received ($1.7 billion) value of Korean shares, sparking broad selloffs.
The pullback adopted in a single day weak point in US chip and AI shares, with Palantir and AMD falling regardless of robust earnings, reigniting fears that the sector’s valuations have peaked.
Japan’s Nikkei 225 and Taiwan’s Taiex each dropped greater than 1%, underscoring a broader retreat in Asia’s semiconductor-heavy markets.
“After the market zoomed about 20% final month alone, profit-taking was inevitable,” stated Lee Han-young, head of fairness funding at Vogo Fund Asset Administration, calling the drop “a pure correction inside an prolonged bull run.”
The Korean received weakened sharply, closing at 1,449.40 per US greenback, up 11.5 received from the day gone by and briefly breaching 1,450 for the primary time in seven months.
The forex’s slide was largely pushed by heavy international outflows and broader greenback energy, merchants stated.
RETAILER INVESTORS BUY THE DIP
Retail traders stepped in aggressively to soak up international promoting, shopping for a web 2.6 trillion received in Kospi shares.

Their dip-buying centered on large-cap chipmakers SK Hynix Inc. and Samsung Electronics Co., together with Doosan Enerbility Co., LG CNS Co., Hanwha Options Corp. and Naver Corp.
Mother-and-pop traders have poured roughly 7 trillion received into home equities over the previous three classes, reversing months of warning.
Lively retail accounts have surpassed 95 million, up 9% from the tip of final 12 months, whereas margin mortgage stability has climbed to 25 trillion received, nearing the report set in 2021, in line with the Korea Financal Funding Affiliation on Wednesday.
“Liquidity is ample,” stated Na Jeong-hwan, analyst at NH Funding & Securities Co. “For now, particular person traders will possible proceed to underpin the market.”
SHORT-SELLING ACTIVITY ADDS TO CAUTION
Alongside the rally, short-selling positions have recently surged, amplifying volatility as extra traders guess on a pullback.
As of end-October, quick curiosity on the Kospi reached 12.46 trillion received, up 9% in a month, whereas that on the Kosdaq rose 14% to five.3 trillion received.
Securities on mortgage, a proxy for future quick trades, jumped 17% over the identical interval to 123.7 trillion received, reflecting heightened hedging exercise after the Kospi’s surge from 3,400 in late September to above 4,100 by late October.

Essentially the most aggressive short-selling occurred within the nation’s biotech and clean-energy shares comparable to HLB Co., HLB Pharmaceutical Co. and LS Supplies Ltd., which had soared 40-60% over the previous month.
The Korea Trade quickly restricted quick trades in a few of these names after exercise exceeded regulatory thresholds.
COOLING, NOT CRASHING
Regardless of the day’s turbulence, most analysts view the correction as wholesome slightly than structural.
With valuations stretched after a greater than 60% surge in Korean equities this 12 months and a weaker received prompting some profit-taking, the market seems to be recalibrating after an overheated run.
Nonetheless, few see the decline as the beginning of an enduring downturn. Ample liquidity circumstances and upbeat earnings prospects for chipmakers recommend the broader development stays intact.
“Immediately’s drop was largely pushed by profit-taking after current good points, compounded by the weak point in US tech shares and warnings from Morgan Stanley and Goldman Sachs CEOs of a possible 10-15% correction,” stated Lim Jeong-eun, analyst at KB Securities Co.
“However the Kospi stays in a transparent bull-market zone, and with the 20-day shifting common performing as a technical help stage, the pullback is more likely to be short-lived.”
