[South Korea's Central Bank Warns: Single Leverage ETFs Based on Samsung Electronics and SK Hynix May Amplify Stock Market Risks] According to a report by Jinse Finance on July 5, South Korea's central bank disclosed in written documents submitted to the country's parliament that the rapid expansion of single-stock leverage ETFs based on Samsung Electronics and SK Hynix may be amplifying structural 'herding' and volatility risks in the South Korean stock market. The combined market capitalization of the two companies has significantly increased in terms of their share of the South Korean stock market's total market capitalization and trading volume. Their market capitalization share has risen from approximately 36.1% at the end of last year to over 55% recently, while their trading volume share has jumped from 27.9% to 63.5%. South Korea's financial regulatory authorities have also expressed similar concerns, emphasizing the need for continuous monitoring of the potential impact of these products on market stability and systemic risks. Single-stock leverage ETFs may exacerbate one-way capital flows under changing market sentiment. In the event of a market reversal, combined with intraday rebalancing and derivative hedging mechanisms, they could further amplify price volatility.