South Korea’s benchmark Kospi index closed 18% higher in a record single-day surge, capping an extraordinary month of market volatility. According to businessinsider.com, the Friday rally followed an overnight tech rally on Wall Street that restored optimism to beaten-down artificial intelligence stocks. Despite the dramatic rebound, the index ended July 22% lower and remains approximately 30% below its June peak.
South Korea’s Kospi Records Historic Single-Day Surge
The severe monthly correction marked South Korea’s worst monthly decline since October 2008, when the market plunged 23% during the global financial crisis. The largest monthly loss on record remains a 27% slump in October 1997 during the Asian financial crisis.
Tech Giants and AI Stocks Lead the Rebound
Shares of major technology and memory chip companies spearheaded the market recovery. Samsung Electronics and SK Hynix led the rebound with gains of 27% and 30%, respectively, in reports detailed by businessinsider.com (associated press reports similarly noted Samsung surging 21% and SK Hynix soaring 24.6% during intraday trading). The broader recovery tracked gains on Wall Street, which were fueled by Microsoft reporting stronger-than-expected quarterly profits that signaled big spending on artificial intelligence is translating into earnings.
Prior to the rebound, the Kospi had sunk more than 17% over a three-day span as investors dumped technology stocks amid worries over an AI bubble, stretched valuations, and rising competition from chipmaking and AI rivals in China. Analysts at Goldman Sachs noted that the sell-off reflected positioning de-grossing and investor fears regarding new open-source frontier models, Chinese memory-chip maker CXMT’s listing, and advances in China’s domestic chipmaking capabilities.
Retail Leverage and Market Vulnerability
The market’s extreme vulnerability stemmed partly from its heavy dependence on Samsung Electronics and SK Hynix, whose rapid rise had previously pushed the benchmark index to more than double during a blistering first-half rally. Retail leverage added another layer of risk as investors piled into leveraged single-stock exchange-traded funds linked to the two memory giants after the products launched in May.
When investors began cutting exposure to AI stocks globally, these leveraged ETFs amplified the sell-off by forcing rebalancing into falling markets. Jeff Kim, head of research at KB Securities, stated that the sharp correction reflected short-term distortions in trading dynamics rather than weakening fundamentals, noting that he expects AI memory shortages to persist for years because new memory capacity takes years to build.
Spillover Effects in Crypto and Regional Markets
The intense stock market turbulence also reverberated across digital asset trading volumes in South Korea. Data from the largest South Korean exchange, Upbit, showed trading volume between the Korean won and Tether spiking 600% to near 200 billion won on July 29, up from 20 million USDT on July 25.
Cho Yoon-sung, a senior researcher at Tiger Research, indicated that demand may have increased for moving funds to overseas exchanges or personal wallets to trade perpetual stock futures as investors sought to capitalize on volatility or find protection. Meanwhile, regional markets also tracked positive momentum, with Taiwan’s Taiex surging more than 7%, Tokyo’s Nikkei 225 climbing 4.4%, and Australia’s S&P/ASX 200 adding 0.4%.
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