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South Korea spent much of this year as a poster child of the scorching global AI trade. Now, by almost every measure, the $4.3 trillion stock market is rapidly losing relevance with investors. Turnover has collapsed 70% from its peak in late May, foreigners are retreating at the fastest pace in Asia and local retail investors are also pulling back. The Kospi, the world’s best-performing major equities benchmark in the first half, has since lost 22% to be the worst in the second half while its AI-heavy Taiwanese and US peers set new highs. Behind the reversal is a market whose AI fortunes hinge disproportionately on Samsung Electronics Co. and SK Hynix Inc., the two memory-chip giants at the heart of the global AI supply chain. That concentration is now a liability as investors question the durability of memory chips’ boom cycle, while the brutal leverage-driven selloff in the summer has made some global funds hesitant to return. “The biggest challenge I see for most investors — especially those who only recently got into Korea for the memory chip trade — is that the easy money in that theme has been made,” said Phillip Wool, head of portfolio management at Rayliant Global Advisors, adding his fund has been taking profit in Korean AI stocks and is now underweight SK Hynix and Samsung Electronics. The two chipmakers together account for over half of Kospi’s weighting and powered its ascent earlier this year. Foreign funds pulled $131 billion from Korean stocks this year, the most among major Asian markets, according to exchange data compiled by Bloomberg. Skepticism over memory chip demand was on full display when shares of Samsung, the world’s top producer of such semiconductors, fell Thursday despite a nearly nine-fold surge in quarterly operating profit. Korea is now struggling to lure buyers, a problem amplified by the nearing completion of combined 55 trillion won stock buybacks by Samsung and SK Hynix. Repurchases by the two chipmakers accounted for the bulk of the $23 billion worth of buy orders in the market last month, according to JPMorgan Chase & Co. “We have seen capital increasingly gravitate back toward US equities, contributing to ongoing foreign outflows from the Korean market,” said Richard Tang, head of research Hong Kong at Julius Baer. Individual investors, a key force behind Kospi’s 100% rally in the first half, remain elusive following the July rout. Margin loans outstanding have hovered around 33 trillion won over the past month, after peaking at 38.6 trillion won in June, according to data from the Korea Financial Investment Association. Brokerage account balances — or investor deposits awaiting deployment — have also fallen to around 100 trillion won from a record of near 140 trillion won. “The memory names in particular have become value names, cheap at current earnings,” said Jon Withaar, a portfolio manager at Pictet Asset Management in Singapore. “But retail and fast money hedge funds do not chase value or the concept ‘cheap’. They chase growth.” To be sure, the declines have opened up buying opportunities for some investors who see AI spending and memory chip profitability still holding up. Korea’s ongoing initiative to boost corporate value is also another draw. Thanks to earlier gains, Kospi is still among the best performers for 2026 overall. Yet for those less convinced, the competing Asian semiconductor hub of Taiwan is gaining favor due to its wider and deeper linkages across the AI supply chain and a more upbeat earnings outlook. Up 70% this year, the Taiex Index beat the Kospi by about 23 percentage points last quarter, the widest margin since the turn of the century. Taiwan’s stock gains are also more broad-based, with about 10% of the local gauge’s members having at least doubled in value this year. That compares to 4.7% for Kospi. “At this point in time, we prefer to express our tactical AI exposure through Taiwan equities, which offer a more complete technology hardware ecosystem and are supported by robust spending plans from major technology companies,” said Chun-Lai Wu, head of Asia Asset Allocation at UBS Global Wealth Management Chief Investment Office. ©2026 Bloomberg L.P. This article was generated from an automated news agency feed without modifications to text. Catch all the Business News , Market News , Breaking News Events and Latest News Updates on Live Mint. Download The Mint News App to get Daily Market Updates. Oops! Looks like you have exceeded the limit to bookmark the image. Remove some to bookmark this image.
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