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KRX after-hours market triggers VI 1,112 times on first day, raising volatility concerns

The Korea Exchange\'s after-hours market triggered the volatility interruption (VI) mechanism 1,112 times on its first trading day, raising concerns about sharp moves in small and mid-cap stocks. VI triggers totalled 228 on the KOSPI and 884 on the KOSDAQ. The exchange said lower liquidity and a wider eligible stock universe contributed, though measures of intraday high-low volatility were lower in after-hours trading than in the regular session.