Nikkei Hits Record High as AI Rally Sparks Semiconductor Surge

Japan's equity markets witnessed a historic milestone on Thursday as the Nikkei 225 surged over 4%, reaching a record closing high. This massive rally was fueled by optimism surrounding the artificial intelligence (AI) sector, following stellar financial forecasts from U.S. memory chip giant Micron Technology.

The Micron Effect: Driving the Semiconductor Boom

The primary catalyst for the Nikkei’s explosive growth was the upbeat quarterly profit and revenue forecast released by Micron. As a critical supplier for Nvidia’s AI processors, Micron’s performance serves as a bellwether for the global semiconductor supply chain. The company revealed that customers have already committed $22 billion to secure its memory chip supply, signaling relentless demand for AI-capable hardware.

This positive sentiment flowed directly into Japanese tech stocks. The Nikkei closed 4.6% higher at 72,366.34, successfully snapping two consecutive sessions of declines. The broader Topix index also mirrored this strength, rising 1.33% to close at 4,016.47. Industry experts, including Takamasa Ikeda of GCI Asset Management, noted that the sharp gain was a direct consequence of Micron's earnings, highlighting the high correlation between the Japanese market and the U.S. semiconductor index.

Major Gainers: From Chip Equipment to Data Centre Materials

The rally was widespread across the technology and semiconductor supply chain. Chip-testing equipment specialist Advantest saw a massive 15% jump, while Tokyo Electron, a major chip-making equipment manufacturer, rose by 7.78%. In the memory segment, Kioxia advanced significantly by 12.27%.

The momentum extended beyond pure chipmakers to include companies providing essential materials for AI data centres. Murata Manufacturing climbed 7.21%, and Taiyo Yuden rose 11.2%. Even SoftBank Group, which had seen recent volatility, reversed its recent trend to jump 8% as investors moved to re-enter technology stocks after previous profit-booking sessions.

While the technology sector dominated the headlines, the broader market showed signs of divergence. The energy sector faced headwinds as falling oil prices dragged down various stocks. The mining sector saw a decline of 3.18%, with Inpex dropping 3.35%, while oil refiners fell by 1.38%.

The shipping industry also struggled to maintain momentum, with Japanese shippers slipping 2%. Specifically, Kawasaki Kisen saw a decline of 3.87%. Despite these sectoral laggards, the overall sentiment on the Tokyo Stock Exchange remained bullish; of the more than 1,500 stocks on the prime market, 66% finished in the green, while 30% declined and 3% remained flat.

Key Takeaways

  • Record-Breaking Surge: The Nikkei 225 closed at a record high of 72,366.34, up 4.6%, driven by a massive rally in AI-related stocks.
  • Micron as a Catalyst: Micron's forecast of $22 billion in customer commitments for memory chips acted as a massive tailwind for Japanese semiconductor and equipment makers.
  • Sectoral Divide: While tech and AI-related stocks (like Advantest and SoftBank) surged, the energy and shipping sectors faced declines due to falling oil prices.