Korea Exchange Triggers Sidecar, Halts KOSPI Programmatic Buy Orders

A sidecar firing on the KOSPI is a mechanical signal that the exchange's own safeguards judged the order flow disorderly, not a fundamental verdict on Korean equities. The notable detail is the asymmetry: only programmatic buys are suspended, leaving selling channels open, which can tilt short-term liquidity and price discovery until the halt lifts. Because no trigger or duration was disclosed, the size of the underlying move and whether this is a brief volatility pause or something more persistent remain unknown. What's worth watching is whether trading normalizes once the mechanism releases and whether similar halts recur.