South Korean financial authorities announced stricter regulations for single-stock leveraged ETFs on May 16, targeting products based on Samsung Electronics and SK Hynix that accounted for 40% of KOSPI trading volume. The government raised the minimum deposit requirement from 10 million won to 30 million won and increased the trading unit from 1 share to 20 shares, with changes effective in August and November respectively. The regulatory tightening responds to extreme market volatility, including 5 circuit breaker activations and 17 sidecar triggers since the ETFs launched in late May. Financial Services Commission Chairman Lee Chan-jin acknowledged the policy failure, stating the products increased market volatility without meaningful foreign exchange stabilization benefits. President Lee Jae-myung ordered swift corrective measures during a May 15 Financial Services Commission briefing, as the KOSPI index experienced sharp fluctuations between 9,114 and 6,806 points.
South Korean Authorities Raise Minimum Deposit to 30 Million Won
The government held a market situation monitoring meeting on May 16 at the Korea Federation of Banks in Jung-gu, Seoul, where officials finalized the regulatory changes. The minimum deposit requirement increased from 10 million won to 30 million won, with only cash accepted as the base deposit. Previously, the 10 million won requirement allowed 70% valuation of substitute securities including stocks, ETFs, and bonds, but this provision was eliminated. The trading unit change from 1 share to 20 shares aims to reduce transaction volume. The deposit requirement takes effect in August, while the trading unit change implements in November after securities firms complete system development.
Authorities also strengthened deviation rate management, tightening the securities firm management obligation standard from 3% to 2%. Asset management companies with ETFs violating appropriate deviation rates face restrictions on listing new ETFs. Mandatory education hours for single-stock leveraged product investment increased from 2 hours to 3 hours. The government suspended new single-stock leveraged product listings until market stabilization, and existing products cannot be advertised or marketed.
Single-Stock Leveraged ETFs Generate 40% of KOSPI Trading Volume
According to Korea Exchange data, 16 single-stock leveraged and inverse ETFs based on Samsung Electronics and SK Hynix recorded 18.2827 trillion won in trading value on May 14, representing approximately 40% of total KOSPI trading volume that day. One product, "SOL SK Hynix Futures Single Stock Inverse 2X," showed a turnover rate of 2,431.93% on May 14, meaning ownership of listed shares changed 24 times in a single day. The turnover rate measures trading volume relative to circulating shares, with higher numbers indicating more active short-term trading.
The KOSPI index climbed to 9,114 on April 22 before experiencing repeated fluctuations, plunging to 6,806 on May 13. The index recovered to 7,284 on May 15 but dropped 6.4% on May 16 to close at 6,820. Since the product listing, the KOSPI market activated circuit breakers 5 times and sidecars 17 times, demonstrating extreme volatility. Through May 16, sidecars triggered 37 times total in the year (19 sell-side, 18 buy-side).
Negative Compounding Effect Amplifies Losses in Volatile Markets
Single-stock leveraged ETFs track 2x the daily return of a specific stock. When an investor purchases 1 million won of a leveraged ETF, the market operates with an effect equivalent to a 2 million won investment. Financial authorities emphasized the "negative compounding" effect that erodes investment principal when prices repeatedly rise and fall.
For example, when an index falls 20% then rises 20%, a regular 1x product moves from 100→80→96, resulting in a 4% loss. A leveraged 2x product moves from 100→60→84, resulting in a 16% loss. This phenomenon of gradually shrinking assets as the market repeats rises and falls is called the negative compounding effect. Long-term holding of single-stock leveraged ETFs in high-volatility markets increases principal loss risk. While high returns are possible when the underlying asset only rises, volatile markets with sharp swings trigger repeated daily rebalancing, creating "volatility drag" that reduces returns. Additional trading occurs during the adjustment of futures and spot positions near market close, causing additional buying when prices rise and additional selling when prices fall, amplifying volatility.
Lee Sang-heon, researcher at iM Securities, stated, "There is no problem with leveraged ETFs themselves," but noted, "As funds concentrated on Samsung Electronics and SK Hynix, which have absolute market capitalization weight, the market's overall concentration phenomenon became stronger than before." FSC Chairman Lee Chan-jin said at a recent meeting, "While the foreign exchange stabilization effect is not large, stock market volatility is increasing," adding, "We should have blocked it even if we had to lie down." Foreign media also pointed out that Samsung Electronics and SK Hynix leveraged products are disrupting global financial markets, calling it a policy failure by authorities.
FAQ
What regulatory changes did South Korean authorities announce for single-stock leveraged ETFs on May 16?
South Korean authorities raised the minimum deposit requirement from 10 million won to 30 million won (cash only) and increased the trading unit from 1 share to 20 shares. The deposit requirement takes effect in August, and the trading unit change implements in November. Authorities also suspended new product listings, banned advertising for existing products, and increased mandatory education from 2 hours to 3 hours.
How much of KOSPI trading volume did Samsung Electronics and SK Hynix leveraged ETFs represent on May 14?
On May 14, 16 single-stock leveraged and inverse ETFs based on Samsung Electronics and SK Hynix recorded 18.2827 trillion won in trading value, accounting for approximately 40% of total KOSPI trading volume that day according to Korea Exchange data.
What is the negative compounding effect in leveraged ETFs?
The negative compounding effect occurs when prices repeatedly rise and fall. When an index falls 20% then rises 20%, a regular 1x product loses 4% (100→80→96), while a leveraged 2x product loses 16% (100→60→84). This phenomenon gradually shrinks assets as the market repeats rises and falls, with losses amplified in volatile markets through repeated daily rebalancing.
