South Korea’s Stock Market Crash Wipes Out Billions Amid AI Boom and Leveraged ETFs
South Korea’s stock market, once the world’s hottest due to the artificial intelligence (AI) surge, has experienced a severe crash wiping out trillions in market value and devastating many retail investors. The Kospi index, which more than tripled over the past year and a half fueled by optimism around AI and memory chip giants Samsung Electronics and SK Hynix, plunged 40% in six weeks during June and July 2026. This collapse erased roughly $2.5 trillion in market capitalization and inflicted heavy losses on millions of individual investors, known locally as "ants," who dominate daily trading volumes.
The crash followed the introduction in May 2026 of leveraged exchange-traded funds (ETFs) in South Korea that track single stocks like Samsung and SK Hynix. These ETFs, which allow investors to double their exposure using debt and derivatives, magnified both gains and losses. Many retail investors, encouraged by the government’s deregulation under President Lee Jae-myung, heavily invested in these funds, believing in the sustained growth of AI chipmakers. However, when chip prices fell amid rising competition from China and concerns about AI demand, the market reversed sharply.
The government responded by tightening trading rules on leveraged ETFs and increasing margin requirements to curb volatility. Despite these measures, the political fallout has been significant, with President Lee’s approval ratings dropping to historic lows and opposition parties calling for investigations into regulatory failures. Meanwhile, some investors like accountant Jake Chung and software developer Lee Ka-young have suffered steep losses, with Chung’s investment in SK Hynix and related ETFs dropping 69% and Lee losing all her gains from the market rally.
The turmoil also affected U.S. investors, as American hedge funds with large positions in South Korean chip stocks faced heavy losses. The crash has sparked calls from investor groups for stronger protections and compensation for retail investors. Market volatility remains high, though the Kospi has recovered about 20% from its lows. Analysts remain divided, with some seeing long-term value in Korean chip stocks despite the recent roller-coaster ride.
Key Points: - South Korea’s Kospi index plunged 40% in six weeks, erasing $2.5 trillion amid AI stock sell-off. - Leveraged ETFs on single stocks Samsung and SK Hynix amplified losses for retail investors. - Government tightened ETF trading rules and margin requirements to reduce market volatility. - President Lee Jae-myung faces political backlash over deregulation and market crash. - U.S. hedge funds with Korean chip stock exposure suffered significant losses. - Retail investors lost millions, prompting calls for regulatory reforms and investor aid.
Entities: People: Lee Jae-myung, Jake Chung, Lee Ka-young, Jonathan Fines, Kim Young-bum Organizations: Samsung Electronics, SK Hynix, Kospi, Situational Awareness hedge fund, Roundhill Investments, Federated Hermes Places: South Korea, United States
Summary: South Korea’s stock market, driven by AI enthusiasm and chipmaker stocks, crashed 40% in mid-2026, wiping out trillions and devastating retail investors who had heavily leveraged their bets through new ETFs. The government has since tightened regulations amid political fallout, while some investors and U.S. funds face heavy losses. The market shows signs of partial recovery but remains volatile.
Topic: economy israel_relevant: false
