Seoul shares tumble over 4% on tech losses amid lingering AI concerns

South Korean stocks tumbled more than 4 percent Thursday due to losses in tech shares amid lingering concerns over profitability of artificial intelligence spending. The local currency rose against the US dollar. The benchmark Korea Composite Stock Price Index fell 4.58 percent, or 301.88 points, to close at 6,296.38,

TOKYO (Kyodo) -- The Nikkei stock index opened lower Thursday, pressured by heavyweight technology shares and due to profit-taking after ending up ove