South Korea's new regulations take effect, leveraged single-stock ETF trading volume plummets According to Global Markets, after South Korean regulators moved to curb demand for leveraged ETFs, the trading volume of leveraged ETFs tracking SK Hynix and Samsung Electronics has significantly shrunk. The KODEX single-stock ETF tracking SK Hynix, one of South Korea's largest single-stock leveraged ETFs, saw its trading volume drop to 59 million shares on Monday, hitting its lowest level since June 4. Similarly, the trading volume of a comparable product tracking Samsung Electronics fell to its lowest level since its late-May launch.