KRX triggers buy-side sidecar as KOSPI surges sharply

South Korea's exchange operator activated a buy-side sidecar on the KOSPI due to a sharp intraday rise, a circuit-breaker mechanism that temporarily halts program trading to curb volatility. The move signals an unusually strong bullish move in Korean equities, likely driven by external factors or domestic catalysts. The activation is a market-structure response, not a fundamental change, but it highlights heightened market momentum and potential overheating.

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