KOSPI in a tailspin again: daily crashes of 8% — the market lost $360 billion. Analyzing 5 structural disasters.
The South Korean stock market is experiencing another shock. The KOSPI index has once again plunged more than 8% in a single trading session, marking the fifth forced trading halt in the past month. Over 400 trillion won — equivalent to $360 billion — has evaporated from the market. Key stocks like Samsung and SK Hynix each lost about 9%.
On June 8, the index had already collapsed by 8% within the first three minutes, and on June 22-23, the decline reached 10% — the second worst day in KOSPI history amid rumors of a tax on unrealized profits. Now, we are witnessing a systemic crisis, not a one-time glitch.
Five reasons why KOSPI is breaking down
1. Retail structure. About 60% of trading volumes are generated by "ants" — retail investors who trade on the principle of quick entry and even quicker exit. Every downturn turns into an avalanche, every rebound into a sharp spike.
2. Monstrous concentration on two stocks. Samsung and SK Hynix together account for 45-50% of the index. For comparison, Nvidia and Apple make up only 14% of the S&P 500. Two stocks control an entire economy — and when they fall, the market loses its balance.
3. Record margin debt. It has reached 32.67 trillion won ($22.4 billion), up 25% year-over-year. Leveraged ETFs on individual stocks like Samsung and SK Hynix double the daily movement: a 9% drop turns into an 18% loss for holders, triggering a cascade of forced sell-offs.
4. Weakening won. The Korean won is not a reserve currency — foreigners sell it more aggressively during capital flight. The exchange rate has already fallen to a 17-year low, raising import costs and preventing the Bank of Korea from cutting rates even amid the stock market crash.
5. The pension fund is a seller, not a stabilizer. The National Pension Service (NPS) holds assets equal to 60% of the country's GDP, but has exceeded its limit on the equity share in its portfolio. Instead of buying the dips, the fund is forced to sell on every rebound — even on the day when the circuit breaker was triggered.
The bullish scenario has vanished
An additional blow came at the end of June when Korea was not included in the MSCI watch list for an upgrade to developed market status. This deprived the market of the last catalyst for which foreign capital was willing to tolerate volatility.
Now, KOSPI fluctuates by 8-10% almost daily. Between crashes, the market also rebounds sharply — in March, it surged nearly 10% in a single day right after a record 12% drop. But this is not a recovery; it is the convulsions of a system lacking stabilizers and an anchor scenario.
My analysis: The South Korean market has fallen into the classic trap of an overheated retail bubble amid structural vulnerabilities. Until an external catalyst emerges — whether it be inclusion in MSCI or decisive regulatory action — we will continue to see "sticking" in extreme volatility. Investors accustomed to 2% movements must rethink their models.