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Regulators move to tighten rules for single-stock leveraged ETFs

South Korea\'s financial authorities have begun reviewing rules for single-stock leveraged exchange-traded funds, which have been cited as one factor behind rising KOSPI volatility. Measures under consideration include raising the basic margin deposit to 30 million to 50 million won from 10 million won, expanding mandatory education and requiring simulated trading and exams. Officials are also discussing limits on new listings, tighter liquidity provider quote rules and stricter controls on tracking error rates.