KOSPI Rises More Than 4% as Korea Exchange Starts Sidecar Curb

South Korea’s benchmark KOSPI gained more than 4% during trading, leading the Korea Exchange to put a sidecar trading curb into effect as Asian equities moved sharply.

The exchange applied the curb to the KOSPI after the index’s advance cleared the 4% mark. That made the sidecar mechanism part of the market response to the same intraday move driving the gain.

The development centered on South Korea’s equity market, with the Korea Exchange’s action following the KOSPI’s rise during trading. The move also came amid a sharp shift across Asian equities, giving the South Korean market event a regional context.

The sequence was a KOSPI gain above 4%, followed by the exchange’s activation of the curb for that index. Both developments unfolded as markets in Asia saw a sharp move, linking the index’s advance to an exchange action during the session. The event concerned South Korean equities and the trading curb applied to the KOSPI.