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KOSPI surges 14 percent on foreign buying in record one-day rebound

South Korea\'s KOSPI jumped 14 percent in its biggest one-day rebound, with foreign investors seen as the key driver. CNBC reported the market turned on a rebound in U.S. tech stocks and renewed expectations for AI semiconductors, while SK Hynix and Samsung Electronics also rose sharply. Analysts cited short-covering and leveraged ETF rebalancing as additional factors. Some warned the surge could be temporary and said the next test is whether foreign buying persists.