KOSPI plunges nearly 7% below 7,000 as US-Iran tensions and oil spike batter chip giants

South Korea's KOSPI plunged 6.99% to 6,953.49 on Monday, closing below 7,000 for the first time since early May, as an escalating US-Iran conflict and surging oil rattled markets. Chip heavyweights led the rout: SK Hynix sank about 10% and Samsung Electronics fell over 6%. Crude jumped as much as 4.5% after fighting near the Strait of Hormuz, stoking war-driven inflation fears.