South Korea’s stock exchange operator has activated a circuit breaker on the KOSPI index, halting trading as the benchmark rallied sharply from recent lows.
The measure was triggered after the index surged 4.1% in a rapid move that prompted the exchange to pause activity to restore orderly markets.
This marks the second time in recent days that the exchange has intervened to manage volatility.
On Tuesday, a separate circuit breaker was activated following a steep decline driven by heavy selling in technology shares.
The back-to-back interventions highlight the fragility of sentiment in Seoul’s equity markets amid broader regional uncertainty.
The buy-side circuit breaker is designed to prevent runaway rallies that can distort price discovery and encourage speculative positioning.