The ‘sidecar’ is a rule that lets the Korea Exchange (KRX, the operator of SK’s bourse) halt futures trading of equities during periods of extreme market volatility.
Triggered when the benchmark KOSPI futures contract moves more than 5% from the previous close.
The KRX limits program trading for five minutes as a ‘circuit breaker’
Rushing a bull to the scene
This article was written by Eamonn Sheridan at www.forexlive.com.