South Korea's Finance Ministry said Finance Minister Koo Yun-cheol held an emergency meeting with the central bank governor and financial regulators after sharp stock-market volatility, as authorities pledged to closely monitor risks and prevent further turbulence. Officials said the KOSPI has triggered its sixth trading curb of the year and fallen 15.6% from its June high. Authorities said the market's heavy weighting in semiconductor shares is amplifying swings, while regulators are also scrutinizing single-stock leveraged ETFs tied to Samsung Electronics and SK Hynix. The move signals heightened official concern over concentration risks in the benchmark index and the potential for broader market instability.