Global Markets | Japan's Nikkei posts sharpest weekly gain in nearly two years on AI shares rally

Japan's Nikkei index delivered its most robust weekly performance in nearly two years, driven primarily by enthusiasm around artificial intelligence equities. This rally reflects sustained institutional appetite for AI-related technology plays across Asia, particularly in Japanese semiconductor and software companies positioned to benefit from global AI infrastructure buildout.

The sharp weekly advance signals renewed confidence in growth assets despite persistent macroeconomic uncertainties. Friday's pullback, though modest, was triggered by geopolitical risk sentiment surrounding Iran conflict negotiations rather than fundamental deterioration in the AI narrative itself. This distinction is important for assessing durability of the move.

The magnitude of this two-year high underscores how aggressively markets have repriced technology and AI exposure following recent momentum shifts. Japanese equities, which historically underperform during secular tech cycles, appear to be capturing meaningful upside as international investors diversify AI exposure beyond U.S. mega-cap names.

Sector implication: This rally exhibits classic risk-on characteristics favoring cyclical technology over defensive sectors. The geopolitical friction, while briefly disruptive, has not yet escalated into sustained risk-off behavior. Broader market correlation remains elevated, suggesting Nikkei strength reflects global sentiment rather than Japan-specific fundamentals.