EquitiesGlobal investors increasingly trade AI-heavy Nikkei average and KOSPI as oneBoth the Japan's Nikkei Stock Average and South Korea's KOSPI gained sharply on Aug. 5. (Source photos by Nikkei and AP)KOSUKE IGUCHIAugust 6, 2026 01:45 JSTTOKYO -- Japan's Nikkei Stock Average gained more than 2,000 points Wednesday, but many investors remain cautious about joining the rally as Japanese stocks appear increasingly linked to the volatile South Korean stock market.
Japan stock rally tempered by volatile South Korea market
Global investors increasingly trade AI-heavy Nikkei average and KOSPI as one
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