Summary of Key Points
This news report focuses on the recent turmoil in the South Korean stock market: On August 6, the KOSPI index plummeted by more than 5%. This was due to regulatory measures that tightened the investment restrictions on leveraged ETFs (exchange-traded funds that amplify profits and losses), prompting South Korean retail investors to shift their funds to leveraged ETFs in countries such as the United States. However, this move did not reduce risks; instead, it exposed them to even greater investment dangers due to exchange rate fluctuations, higher leverage levels overseas, and the intense volatility of global tech stocks.
I. The Sharp Drop in the South Korean Stock Market: A Double Blow from Leverage Regulations and the Appreciation of the Won
During the Asia-Pacific trading session on August 6, the KOSPI index fell by over 5%. Giants such as Samsung Electronics and SK Hynix declined by more than 6% and 9%, respectively. The South Korean stock exchange even activated a mechanism to “suspend automated selling orders” to prevent further declines caused by computer-driven sales.
Why such a sharp drop? There are two key reasons:
1. Appreciation of the Won: The won rose against the US dollar to 1415.30, its highest level since October 2025. A stronger local currency makes South Korean export companies’ products more expensive overseas, reducing their profits and leading to lower stock prices.
2. Tighter leverage regulations: Previously, the KOSPI index had fallen from a historical high of 9385 points to 5262 points, a decline of over 43%. Regulators believe that leveraged ETFs have amplified these fluctuations (for example, investors can use less capital to gain more profits but also suffer greater losses). As a result, new regulations have raised the investment threshold: previously, an investment of 10 million won (which could also include stocks) was sufficient; now, 30 million won in cash are required, effectively excluding many retail investors.
II. Retail Investors Shift to Overseas Markets Due to Domestic Restrictions
The enthusiasm of South Korean retail investors for leveraged products has not been dampened by the regulations; instead, they have turned to overseas markets in search of opportunities.
Data speaks for itself: The trading volume of 16 domestic leveraged/reverse ETFs dropped from 13 trillion won before the regulation (on July 15) to 1.3 trillion won on August 4, a sharp decrease of 89.8%. During the same period, South Korean retail investors aggressively bought US leveraged ETFs:
- The most purchased was the US semiconductor triple-leveraged fund SOXL, with a net purchase of $2.487 billion (equivalent to 18 billion yuan).
- They also invested $214 million in Tesla’s double-leveraged ETF.
- In July alone, they bought $4.67 billion in US stocks, the largest amount since January this year.
Why the US? Some experts argue that the US market is relatively stable, but this is a misconception—overseas leveraged products carry greater risks.
III. The Hidden Dangers of Overseas Leveraged ETFs: Exchange Rate and High Leverage
By investing in overseas leveraged ETFs, retail investors have encountered two additional major risks:
1. Exchange rate risk: For example, if you profit from buying a US ETF in dollars but the won appreciates, the amount of won you receive upon converting back will be less (for instance, if 1 dollar used to exchange for 1400 won, now it only exchanges for 1415 won). Conversely, a depreciation of the won can also result in losses.
2. Higher leverage = faster losses: Many US leveraged ETFs have 2x or 3x leverage (such as SOXL, which is triple-leveraged for semiconductors), leading to more intense price fluctuations compared to domestic products. For example, if the semiconductor index falls by 10%, SOXL could fall by 30%, resulting in much larger losses.
Experts warn: “These overseas products carry higher risks than domestic ones, and investors may be exposed to even greater dangers.”
IV. The Global Tech Stock Meltdown and Its Impact on South Korean Retail Investors
Worse still, most of the overseas leveraged ETFs purchased by South Korean investors are linked to tech stocks. In July, global tech stocks experienced a severe sell-off:
- The Philadelphia Semiconductor Index fell by 21%, the largest monthly decline since 2008.
- Hedge funds lost nearly 3% of their annual returns due to tech stock trades, and equity pick-and-put funds in the Asia-Pacific region lost an average of 9.4%.
JPMorgan analysis: Hedge funds may reduce their holdings in tech stocks, meaning that in the future, tech stocks will rely more on retail investor support, leading to even greater volatility.
This means that the US tech leveraged ETFs purchased by South Korean investors could experience even more extreme price movements in the future—providing substantial gains when markets rise but also potentially resulting in total losses when they fall.
Conclusion
South Korean retail investors hoped to profit quickly through leverage, but domestic regulations have forced them to turn to overseas markets, only to find themselves facing additional risks due to exchange rate fluctuations, higher leverage levels, and greater volatility in tech stocks. For ordinary investors, it is advisable to stay away from high-leveraged products and not to be blinded by short-term gains.