The South Korean Kospi and Japanese Topix indexes both reached record-high levels during trading on May 29, 2026 [1, 2].
This surge indicates a significant shift in investor sentiment, as market participants in Asia-Pacific equity markets prioritized growth optimism over geopolitical instability. The movement suggests that regional investors are increasingly willing to discount the risks associated with Middle East volatility in favor of domestic and regional economic gains.
Market participants in Seoul and Tokyo largely ignored renewed diplomatic tensions between Iran and the U.S. [1, 2]. Instead, investors focused on the potential for a peace breakthrough or a possible cease-fire [1, 2]. This optimism drove significant buying activity across the Korea Exchange and the Tokyo Stock Exchange [3].
In South Korea, the Kospi closed up 2.55% during the session [3]. There are conflicting reports regarding the exact peak of the index; market data cited by MSN said the Kospi reached a record high of 8,131.15 points [3], while other reports place the surge as high as 8,457 points [4].
Japan's Topix also hit an all-time high as part of the broader regional rally [1, 2]. The simultaneous peak of both the Topix and the Kospi reflects a synchronized bullish trend in the two largest economies in East Asia.
Investors appear to be betting that the current geopolitical friction will not escalate into a systemic economic shock. By focusing on the prospect of a diplomatic resolution, traders have maintained a risk-on appetite despite the headlines regarding Iran [1, 2].
“South Korean Kospi and Japanese Topix indexes each reached record-high levels”
The simultaneous record peaks in South Korea and Japan suggest a decoupling of Asian market performance from Middle Eastern geopolitical risk. By prioritizing the possibility of a cease-fire over the immediate tensions between Iran and the U.S., investors are signaling a high tolerance for risk and a strong belief in the resilience of East Asian equity markets.
