![[Seoul=NEWSIS] Reporter Kim Geum-bo = On the morning of the 29th, the KOSDAQ index, which had fallen below the 700th level, was displayed on an electronic board in front of the Hana Bank dealing room in Jung-gu, Seoul. July 29, 2026. kgb@newsis.com /Photo=Kim Geum-bo](https://thumb.mt.co.kr/cdn-cgi/image/f=avif/21/2026/07/2026072912371190199_1.jpg)
The KOSDAQ index fell more than 8% during trading on the 29th, triggering a circuit breaker (a 20-minute trading halt).
On this day, the Korea Exchange activated a Level 1 circuit breaker at 12:19:12 p.m., suspending KOSDAQ market trading for 20 minutes.
This occurred after the KOSDAQ index remained more than 8% below the previous day's closing price for one minute. Although the KOSDAQ index opened higher today, it was swept up by high volatility and quickly turned into a sharp decline.
After the Level 1 circuit breaker is lifted, if the KOSDAQ index falls more than 15% from the previous day's closing price and continues to drop an additional 1% or more below the trigger level of the Level 1 circuit breaker for one minute, a Level 2 circuit breaker will be activated. Under Level 2, trading is suspended for 20 minutes.
The circuit breaker was also triggered on the previous day due to a sharp drop in stock prices in the KOSDAQ market. This marks the fourth time this year that a circuit breaker has been activated in the KOSDAQ market.
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