South Korea’s bourse operator, the Korea Exchange (KRX), activates market-stabilizing measures as the KOSPI tumbles on heavy selling pressure, especially in technology and large-cap stocks. According to reports from Korea Times, the KRX first triggers a circuit breaker on Tuesday after the KOSPI drops more than 8% from the previous session’s close. Trading in KOSPI-listed shares is halted for 20 minutes, with activation reported around 1:51 p.m., and it marks the sixth time this year the KRX uses such a measure. Separately, the KRX also issues a sell-side sidecar for the KOSPI after further sharp declines. Program trading is suspended for several minutes at times reported around 1:31 p.m. and again in another session around 10:23 a.m., according to the Korea Times. The index is reported to fall into the 7,200–7,900 range depending on the session, with investors offloading technology and other large-cap holdings. One account links the move to profit-taking following Samsung Electronics’ preliminary second-quarter earnings estimate, while another cites broader reassessment of the next phase of AI trading. The reports also note that foreign and individual investors sell shares while institutional buying is recorded as larger in one session.