South Korea's KOSPI plunged 8%, triggering a circuit breaker, while lawmakers push to ban leveraged ETFs on Samsung and SK Hynix. Amid the rout, SK Hynix's US ADR listing is oversubscribed, targeting a $28 billion IPO—potentially the largest tech debut in years. Separately, China's central bank extended its gold buying streak to 20 months, signaling continued diversification away from the dollar.