The Kospi index tanked 11.4 per cent to 5,338.56, with SK hynix down 18 per cent and Samsung 12.5 per cent lower. — AFP pic Stay updated on the latest news and insights. Subscribe to our newsletter here Summary On July 29, South Korean stocks experienced a significant decline, with the Kospi index plummeting 11.4% to 5,338.56 amid a deepening tech sector rout.Leading the downturn were chipmakers SK hynix and Samsung, which saw their shares fall by 18% and 12.5% respectively.This decline follows an almost 11% drop in the Kospi index the previous day. First Published: Wednesday, 29 Jul 2026 12:44 PM MYT HONG KONG, July 29 — South Korean stocks plunged more than 11 per cent Wednesday as the tech rout that has hammered the market in recent weeks deepened, with chipmakers SK hynix and Samsung collapsing.The Kospi index tanked 11.4 per cent to 5,338.56, with SK hynix down 18 per cent and Samsung 12.5 per cent lower. The selloff extended an almost 11 per cent dive for the Kospi on Tuesday. — AFP