Global stock markets are in turmoil, with South Korea and Japan experiencing severe sell-offs.

The South Korean stock market is facing a catastrophic collapse. On July 29, the Korea Composite Stock Price Index (KOSPI) fell nearly 6%, closing near the 5,600-point mark. This is a dramatic reversal from its all-time high of 9,385.59 points reached on June 19, which prompted a wave of optimism online, described by some as the "best summer." In just over a month, the index has plummeted nearly 40% from its peak.

During the trading session, the KOSPI at one point plunged over 8%, triggering a market-wide circuit breaker and hitting a new low below the 5,600-point threshold. This marks the ninth time this year and the second consecutive trading day that South Korea's market-wide circuit breaker has been activated. Since the mechanism was introduced in 2000, it has only been triggered 13 times in history.

The scale of the disaster is starkly illustrated by the data. The crash has triggered margin calls on over 1.2 million leveraged accounts, with more than 350,000 retail investor accounts completely liquidated, wiping out their entire principal. Strikingly, 62% of those forced to close positions were young people aged 20 to 30, many of whom had heavily bet on semiconductor leaders through leveraged ETFs.

Among popular individual stocks, SK Hynix fell nearly 10%, and Samsung Electronics dropped over 5%. Despite reporting strong financial growth for the second quarter, SK Hynix's operating profit fell short of market expectations of around 64 trillion won, and its revenue also missed the forecast of approximately 84 trillion won.

Market analysts point to the uniquely sensitive nature of the South Korean market. With a population of about 50 million, the country has over 100 million stock accounts. The "army of ant" retail investors are known for their aggressive, high-risk strategies, often borrowing heavily to invest. Remarkably, nearly all of their margin financing is concentrated in Samsung Electronics and SK Hynix, which together account for over 50% of the KOSPI's weight. The core issue is the massive scale of "borrowing to buy stocks" and the extreme crowding of capital in a few names.

In the face of demands for an apology, South Korean Finance Minister Choi Sang-mok expressed regret for the "insufficient consideration" given before launching single-stock leveraged ETFs. After the KOSPI fell over 6% in early trading, the minister stated that the government is internally studying market stabilization measures and will further adjust regulations on single-stock leveraged ETFs to manage volatility. According to the Ministry of Economy and Finance's website, the government plans to issue 150 billion won in personal investment bonds in August.

Japan's stock market is also suffering a sharp decline today. As of press time, the Nikkei 225 index was down 1.49% at 61,434.14 points. Kioxia Holdings, a representative Japanese memory chip company, fell over 15%, while other semiconductor-related stocks like Tokyo Electron and Advantest also saw significant drops.

Bruce Kirk, Goldman Sachs' chief Japan equity strategist, expects volatility to persist in the short term as investor positions remain crowded. Data from Goldman Sachs' prime brokerage shows that hedge funds' total and net exposure to Japanese stocks are both at the 98th percentile of their five-year range, representing historically extreme levels.

Financial crisis warning voice Meredith Whitney, who gained fame for her early warning before the 2007 global financial crisis, has spoken out. As the Federal Reserve prepares to announce its latest interest rate decision on July 30, widely seen as one of the most uncertain policy meetings in recent years, Whitney warns that the U.S. economy could face a "reckoning" in the fourth quarter.

While market pricing suggests a high probability (over 70%) that the Fed will hold rates steady, the remaining nearly 30% chance of a rate hike is unnerving investors. This level of divergence is unprecedented since the intense debate over the pace of rate cuts in 2024. With U.S. inflation stubbornly high and geopolitical tensions disrupting energy supply, every word from the Fed and every dissenting vote could be a significant variable for asset prices.

Whitney stated that the one-time economic boost from the World Cup and the fading impact of fiscal spending are losing their effect. She pointed to weekly credit card balances, a real-time indicator of consumer spending, which have slowed since May. Furthermore, U.S. consumers are also feeling the pressure from rising gasoline prices.

Whitney believes these factors provide a rationale for the Fed to maintain its current interest rate. She dismissed arguments from firms like Citadel Securities that a surprise rate hike would bolster the credibility of Fed Chair Kevin Warsh. Whitney argued that Warsh's decision to establish five policy working groups effectively buys him several months, reducing the need for an immediate policy pivot. "I think they will keep rates unchanged and continue to use a relatively hawkish tone to retain flexibility for future action," she said. Commenting on the Fed Chair, Whitney added, "His inclination is to wait and ensure he makes the right judgment."