Simultaneous activation across both boards

The Korea Exchange posted the market trigger information on its official site, showing that the sidecar — an automatic trading restraint that kicks in when KOSPI 200 futures prices swing sharply for one minute — was invoked for sell-side moves on both markets in parallel.

A sell-side sidecar is designed to cool overheated selling by temporarily curbing program trading after a steep one-minute drop in index futures. Simultaneous activation on the KOSPI and KOSDAQ indicates broad-based selling pressure across the Korean equity market rather than a move confined to a single board.

Further details on the size of the index moves or the duration of the restraint were not included in the posted KRX material.

Primary sources reviewed: 9.

Verdict: True