A financial data screen in the dealing room of Hana Bank in Seoul on Oct. 22, 2026, shows the benchmark Korea Composite Stock Price Index having fallen 0.85 percent from the previous session to an intraday low of 5,686.65 in early trading. South Korean shares opened lower, after the previous session's sharp gains as investors weighed concerns over the profitability of artificial intelligence infrastructure investments. (Yonhap)

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