The trading volume of double-leverage single-stock ETFs for Samsung Electronics and SK Hynix has slumped to just 4% of their peak in June. An unprecedented monthly net capital outflow of roughly $1 billion is anticipated in August. As of August 27, the assets under management for these ETFs have dwindled from $11.4 billion in late June to $5 billion. Since July, South Korea has progressively tightened its trading regulations, with measures such as mandatory simulated trading coming into effect on August 19, which has significantly reduced the participation of retail investors. Concurrently, market anxieties regarding the AI industry have sparked a sell-off in tech stocks, exacerbating the contraction in trading scale. While stricter regulations are likely to sustain short-term capital outflows, the cooling trading activity has also alleviated market volatility, with the Korea Composite Stock Price Index (KOSPI) volatility indicator reaching a four-month low. The benchmark Korean stock index has soared by 61% year-to-date, yet it remains 25% below its all-time high achieved two months ago.