Asian Shares Mixed; Nikkei and KOSPI Surge to Record Highs

The Quick Take

• Asian equity markets closed mixed on Thursday, with Japan's Nikkei 225 and South Korea's KOSPI reaching fresh record highs
• Easing geopolitical tensions following the US-Iran ceasefire and AI investment enthusiasm drove outperformance in Japan and Korea
• Other regional markets posted more modest results, reflecting the uneven distribution of AI and geopolitical catalysts

The divergence across Asian equity markets on Thursday reflects the uneven distribution of catalysts driving the current rally. Japan and South Korea, with heavy semiconductor and technology weighting, directly benefit from AI-driven chip demand and geopolitical de-escalation, while markets with different sectoral compositions — commodities, financials, consumer-focused indices — saw more muted gains from the same external catalysts.

The Nikkei-KOSPI dual record illustrates how the AI infrastructure investment supercycle has created a concentrated geographic winner set in Asian equities. Countries housing major AI supply chain components — memory chips, logic processors, precision manufacturing equipment, and AI-linked export industries — are attracting disproportionate capital flows from global institutional investors seeking AI infrastructure exposure outside US-listed names.

For regional equity fund managers, the mixed Asian session complicates index-level entry decisions. While headline performance looks strong due to the Nikkei and KOSPI weights, underlying breadth in many regional markets remains limited. Selective exposure to Japan and Korea's AI-aligned sectors, rather than broad Asian ETF positions, appears to be the more targeted way to capture current momentum while managing concentration risk.

Synthesized from 1 source.