South Korean regulators tightened closing-price tracking-gap obligations for ETF liquidity providers after single-stock leveraged products fueled volatility and recurring price distortions. The Korea Exchange recorded 86 tracking-gap disclosures between the 19th, when the revised standards took effect, and the 25th. None exceeded the management thresholds of 2% for ETFs based on domestic assets or 5% for overseas-asset ETFs, although disclosures remained above the reporting thresholds of 1% and 2%, respectively. The rise in disclosures has renewed questions about liquidity providers' ability and incentives to manage ETF quotes, particularly after 19 of 26 firms received a C grade in the second-quarter evaluation. Separately, the Financial Supervisory Service will require new high-risk public funds to disclose loss histories and stress-case maximum losses from Sept. 30.