South Korea's stock market experienced a strong rebound, but new financial regulations quickly cooled trading in single-stock leveraged ETFs.
On July 31, according to data from the Korea Exchange (KRX), the first day of stricter rules on single-stock leveraged ETFs saw total trading volume across 16 such products and their inverse counterparts fall to 3.3071 trillion won. This marks a sharp 75.3% decline from the previous session's 12.4485 trillion won and is significantly below the average daily turnover of 12.27 trillion won seen since the start of July.
Meanwhile, the KOSPI index posted a strong rally, triggering a buy-side circuit breaker as semiconductor heavyweights like Samsung Electronics and SK Hynix led the gains.
Reports citing multiple market participants in South Korea suggest that the day's rally was not directly driven by the new leveraged ETF regulations. Instead, it was more influenced by shifts in global fund flows, foreign investors covering short positions, and a recovery from previous excessive pessimism. Analysts caution that the surge should not be interpreted as a fundamental shift in the underlying trend of the South Korean stock market.
Leveraged ETF Activity Plummets on First Day of New Rules
South Korean financial regulators implemented new rules starting July 31, raising the bar for individual investors to trade single-stock leveraged ETFs.
Under the new regulations, the required base deposit for individual investors to buy single-stock leveraged ETFs has been raised from 10 million won to 30 million won. Additionally, the rules eliminate the eligibility of securities assets to be used as collateral for the deposit and introduce a T+2 cash payment system. These measures aim to restrict short-term leveraged trading that relies on capital recycling.
The impact of the regulation was immediately apparent on the first day of trading. KRX data shows that the combined trading volume of 16 single-stock leveraged and inverse ETFs fell from 12.4485 trillion won the previous day to 3.3071 trillion won, a 75.3% drop. Excluding inverse products, the trading volume of the 14 main single-stock leveraged ETFs decreased from 6.9354 trillion won to 2.4686 trillion won, a reduction of 64.4%.
Market participants believe the new rules have effectively reduced the concentration of capital in single-stock leveraged products in the short term, helping to correct the previous supply-demand imbalance in the South Korean market. Kim Jae-seung, an analyst at Hyundai Motor Securities, noted that the heat in single-stock leveraged ETF funds had already begun to subside earlier in July. Net buying volume fell from 1.13 trillion won in May-June to approximately 380 billion won so far in July.
At the same time, net buying of regular stock ETFs expanded from 220 billion won to 470 billion won, indicating that some capital is shifting from high-risk leveraged products to traditional stock ETFs. He pointed out that as capital concentration in single-stock leveraged ETFs decreases, the internal structure of KOSPI's gains and losses has improved, with a rotation driven by large-cap stocks starting to form. However, since the capital shift is primarily an internal adjustment within the ETF market, its impact on the KOSDAQ market, which is dominated by individual investors, remains limited.
The Key Driver of the KOSPI Rally: Foreign Short Covering
Although the first day of the new regulations coincided with a strong rally in the South Korean stock market, market analysts generally believe there is no direct causal relationship between the two.
Hwang Su-uk, an analyst at Meritz Securities, stated that the sharp decline in single-stock leveraged ETF trading volume confirms that the regulatory policy has reduced the risk of capital concentration. However, attributing the rise in large-cap stocks like Samsung Electronics and SK Hynix directly to the new rules would be an overinterpretation. He noted that recent news of global hedge funds reducing positions, particularly institutional adjustments by firms like Citadel, has become a focal point for investors, seen as a significant signal of short-squeeze pressure in the market.
After a period of concentrated selling in South Korean semiconductor stocks, foreign capital has begun to flow back in, driving a rapid rebound in major tech stocks. Hwang Su-uk believes this is more akin to a repair process following a market supply-demand imbalance, with capital returning to fundamentals-based pricing, rather than a direct stock price increase driven by the regulatory measure.
Lee Sang-hun, an analyst at iM Securities, echoed this view, stating that the day's rally in large-cap stocks was primarily a technical move driven by foreign investors covering previously established short positions. He pointed out that since short selling was primarily concentrated in the top-tier market cap stocks Samsung Electronics and SK Hynix, capital flow during the covering phase naturally prioritized these stocks. The key question for the market going forward is whether the rally can broaden to more sectors and individual stocks, rather than relying solely on a few heavyweights to support the index.
An official at a South Korean asset management firm also believes the day's market movement was more reflective of a technical rebound. He stated that the current macro environment, characterized by high interest rates, geopolitical risks in the Middle East, and inflationary pressures, has not significantly eased, and therefore a short-term rally should not be mistaken for a market trend reversal.
Retail Investors Question Regulatory Timing
The timing of the new rules, coinciding with a surge in key heavyweights like Samsung Electronics and SK Hynix, has sparked controversy among South Korean individual investors on social media platforms.
Some investors complain that the regulator's decision to raise the threshold for leveraged ETF trading coincided with the market rebound, preventing ordinary investors from participating in the upside. Others argue that the requirement for 30 million won in cash deposits significantly raises the barrier to entry, further limiting the operational flexibility for investors who have already suffered losses.
However, market institutions believe the timing of the policy implementation and the market rally is largely coincidental. Analysts point out that while the decline in single-stock leveraged ETF trading volume does reflect the regulatory changes shaping the capital structure of the South Korean market, the primary driver of the KOSPI's rebound on that day was still changes in global fund flows and foreign short covering.
Whether the South Korean stock market can transition from a technical repair to a sustained uptrend still depends on improvements in the macro environment and a continued return of capital, rather than the short-term impact of a single regulatory measure.
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