Japan's market surge is still gaining speed — here's what's driving it higher

Japan's stock market is experiencing a remarkable surge, driven by a combination of political shifts and the ongoing excitement surrounding artificial intelligence. Recent developments, including Prime Minister Shigeru Ishiba's resignation, have sparked a leadership contest within the ruling Liberal Democratic Party, which investors have interpreted positively, propelling the Nikkei 225 index to new heights. This past Friday marked the third time this week that the Nikkei 225 hit a record high, with the index showing an impressive gain of approximately 12% year-to-date. A significant contributor to this momentum has been SoftBank, which saw its shares rise by 17% in just a week, following Oracle's substantial AI-driven growth. While Japan's stock market has been on an upward trajectory for some time, this latest rally is attributed to a mix of global monetary policy changes, the spillover effects of the AI boom, and a weak yen that has made Japanese assets more appealing to foreign investors. Analysts at Deutsche Bank noted that Ishiba's resignation has led to expectations that his successor may adopt more expansionary fiscal and monetary policies, further boosting market sentiment. The Nikkei's breakthrough past the 44,000 mark for the first time underlines Japan's emergence as a standout market, especially as corporate reforms have revitalized investor interest. In addition, Japan's crucial roles in semiconductor materials, industrial robotics, and quantum computing position it as a significant beneficiary of the global AI investment wave, according to Winnie Wu of BofA Global Research. The excitement surrounding AI has intensified, particularly following Oracle's impressive performance, which has also positively impacted Tokyo's market, leading to soaring shares of SoftBank, a key player in the sector. Furthermore, the Federal Reserve's potential pivot towards lower interest rates is influencing global markets, including Japan, as it eases liquidity conditions and encourages risk-taking among investors. However, the rally is not without its risks. A sudden strengthening of the yen could harm exporters and provoke a reaction from the Bank of Japan, reminiscent of the summer of 2024 when unexpected rate hikes led to significant market turmoil. Additionally, valuations in some technology sectors, particularly those benefiting from the AI trend, are starting to appear stretched, prompting caution among experts who warn that markets may be racing ahead of underlying fundamentals.