KOSPI breaks through 6,600 points, South Korea's stock market sets a new milestone

South Korea’s Composite Stock Price Index (KOSPI) first surpassed the 6,600-point mark and closed at this level on April 27, 2026, setting a new milestone for the domestic stock market.

According to data from the Korea Exchange, the KOSPI index rose 139.40 points (2.15%) from the previous trading day, closing at 6,615.03 points. The index initially increased by 57.97 points (0.90%) at the opening, starting at 6,533.60 points, then continued to see buying pressure, gradually widening the gain, ultimately breaking through the psychologically significant resistance level of 6,600 points.

The intraday trend was equally strong. The KOSPI rose to a high of 6,657.22 points, setting a new intraday record. Typically, when an index breaks its all-time high, the market interprets it as increased investor risk appetite, and the same day can be seen as reflecting an overall optimistic market sentiment.

The KOSDAQ index also rose accordingly. The KOSDAQ index increased by 22.34 points (1.86%) from the previous trading day, closing at 1,226.18 points. Not only the main board KOSPI, which is dominated by large-cap stocks, but also the KOSDAQ, with a higher proportion of tech and growth stocks, strengthened in tandem, indicating that investor confidence has spread to the overall domestic stock market.

Market analysts believe that the significance of the main indices reaching new all-time highs is not just in the numbers themselves. While this can stimulate investor psychology and potentially trigger additional capital inflows, it also means that after a short-term surge, volatility may increase. The future trend depends on whether corporate earnings, interest rate environments, and external economic conditions can support continued growth, which could either sustain the upward momentum or shift into a consolidation phase.