South Korea's Kospi has climbed more than 20% from its July low, crossing the threshold commonly used to define a bull market, as investors returned to the semiconductor companies that dominate the benchmark index.
The reversal follows a sharp selloff driven partly by leveraged positions and forced selling that pushed the Kospi into bear-market territory last month. The speed of the recovery has drawn attention from analysts who say the durability of the rally depends heavily on whether earnings fundamentals can support increasingly optimistic expectations.
"The AI rally and continued strong earnings have been a constant during the sell-off, so it is fundamentals returning the market back to normalcy rather than the other way around," said Peter Kim, head of global investment strategy at KB Securities.
Kim added that valuations and earnings were never seriously in doubt during the semiconductor rout, which he attributed to technical factors and fund flows rather than deteriorating business conditions. The unwinding of leveraged positions has eased after regulators tightened rules and brokerages normalized margin and risk requirements.
Strong U.S. technology earnings and continued commitments to AI infrastructure spending have helped revive confidence that demand for memory chips will remain robust — a critical factor for index heavyweights including SK Hynix and Samsung.
Phillip Wool, head of research at Rayliant Global Advisors, described the rebound as partly technical, as forced selling subsided and dip buyers returned. But he also credited stronger-than-expected earnings from major technology companies for reinforcing expectations around AI infrastructure spending and driving upward revisions to growth forecasts for Korean hardware firms.
"Korea's equity market is basically synonymous with the AI hardware trade at this point," Wool said.
He cautioned that any disruption to that narrative — soft capital-expenditure guidance from hyperscalers, weaker token pricing, or Federal Reserve tightening concerns — could trigger a pullback. "Expect continued volatility as long as there's uncertainty about how AI hardware spending will play out," he said.
Supporters of the rally also cited structural factors. Billy Leung, investment strategist at Global X ETFs, pointed to South Korea's corporate-governance reforms and its "Value-Up" program, which he said have helped narrow the so-called "Korea discount" — the longstanding tendency of South Korean companies to trade at lower valuations than comparable global peers.
"The KOSPI is in a bull market, but the more important question is whether the rally is being driven by speculation or by a genuine improvement in fundamentals," Leung said. He characterized Korea's market as closer to a fundamentally supported bull market than a speculative bubble, while noting that elevated retail participation, heavy index concentration, and ambitious market targets are beginning to resemble late-cycle behavior.
Jung In Yun of Fibonacci Asset Management Global urged caution about attaching too much significance to the 20% milestone. He described the rebound as a mix of technical recovery from forced selling and "a genuine return of stability," but said the broader bull trend would likely continue at a slower and bumpier pace.
"After such a steep rebound, some consolidation would be healthy, and investors should not expect the market to rise at the same pace from here," Yun said.
The Kospi's heavy concentration in a small number of semiconductor names remains a central risk factor, analysts say, leaving the index acutely sensitive to any shift in sentiment around AI spending — the same dynamic that fueled both its rout and its recovery.
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