"When you nudge households into the market, and then they take losses of this size in 48 hours, the political pressure to do something becomes intense."

South Korean equities suffered their steepest one-day decline in nearly five months on Tuesday, with the benchmark KOSPI sliding almost 11% as a global rout in semiconductor…

As South Korea tightens rules on single-stock leveraged exchange-traded funds, overseas markets are expanding their lineup of leveraged products tied to Korean