Single-stock leveraged ETFs tracking chipmakers Samsung Electronics and SK Hynix have been criticized as drivers of volatility

South Korea's 2x leveraged ETFs tracking Samsung and SK Hynix crashed over 20% in one day, erasing $1.7 billion in retail investor wealth within two weeks.

South Korea's financial regulators are scrambling to curb the influence of leveraged exchange-traded funds tracking the country's top chipmakers, Samsung Electr