Japan’s stock market hits new record as AI boom gathers steam

Global enthusiasm for artificial intelligence (AI) has propelled major stock markets to new heights, with Japan's Nikkei 225 index reaching record levels in late May 2026, driven by strong performance in semiconductor and industrial sectors. Companies like SoftBank Group have seen significant gains due to substantial AI infrastructure investments. Concurrently, Wall Street's S&P 500, Dow, and Nasdaq composites also hit all-time highs in early June 2026, largely fueled by booming AI-related stocks, though some analysts express concerns about a potential investment bubble.

Amidst this rapid technological advancement and market growth, governments are increasing their scrutiny over the national security implications of AI. On June 2, 2026, the U.S. government established a framework, through a presidential executive order, for voluntarily vetting advanced AI systems for national security risks before their public release. This initiative aims to address potential threats related to areas like cybersecurity and biosecurity, reflecting broader efforts to manage the powerful capabilities of emerging AI technologies.