Nikkei Hits Record Highs with Sharpest Weekly Gain Driven by AI

Japan's Nikkei index has achieved a historic milestone, recording its strongest weekly performance in nearly two years. Fueled by a massive rally in artificial intelligence (AI) and semiconductor-related stocks, the index reached consecutive record highs this week.

AI and Semiconductor Stocks Lead the Rally

The primary catalyst for the Nikkei's surge was the intense optimism surrounding AI-related sectors. The index posted a substantial 7.9% rise for the week, marking its sharpest weekly growth since August 2024. On Friday, while the index trimmed some early gains, it managed to close 0.28% higher at 71,250.06, after touching an intraday record high of 71,952.99.

Specific industry players drove much of this momentum. Chip-related stocks saw significant movement, with Advantest rising 4.75% and Kioxia jumping 12%. Furthermore, the demand for AI data center infrastructure provided a massive boost to material suppliers. Fujikura, a key player in fiber-optic cables, surged 15.69% to reach its daily limit high of 5,161 yen. This jump followed a significant upward revision in its annual net profit forecast to 229 billion yen ($1.42 billion), up from an initial guidance of 156 billion yen. Similarly, industry peer Furukawa Electric saw a 15% surge.

Geopolitical Uncertainties and Profit Booking

Despite the record-breaking weekly performance, the market faced volatility toward the end of the week due to geopolitical tensions in the Middle East. Uncertainty regarding potential peace talks between the U.S. and Iran weighed heavily on investor sentiment. Reports surfaced that U.S.-Iran negotiations in Switzerland would not take place as planned, following the cancellation of U.S. Vice President JD Vance’s travel to the country.

Daisuke Hashizume, senior strategist at Daiwa Securities, noted that while the market is eyeing a 60-day window to reach a final agreement to end the conflict, the sudden news regarding the stalled talks indicates a "tough road ahead." This geopolitical friction, combined with the U.S. market being closed on Friday, prompted many investors to engage in profit-booking to lock in gains from the recent rally before the weekend.

Divergence in Market Performance

Die Woche verdeutlichte eine bemerkenswerte Divergenz zwischen dem Nikkei und dem breiter gefassten Topix-Index. Während der Nikkei seine KI-getriebenen Höchststände feierte, fiel der Topix um 0,57 % auf 4.044,96. Dieser Abwärtsdruck auf den breiteren Index wurde weitgehend auf einen Einbruch im Bankensektor zurückgeführt. Führende Finanzinstitute, darunter die Mitsubishi UFJ Financial Group und die Mizuho Financial Group, verzeichneten Rückgänge von jeweils 2,85 % und 4,42 %, was den Topix nach unten zog, obwohl die Tech-Aktien in die Höhe schossen.

Wichtigste Erkenntnisse

  • KI-getriebenes Wachstum: Der Nikkei verzeichnete einen wöchentlichen Zuwachs von 7,9 %, angetrieben durch massive Kursgewinne bei KI- und Halbleiteraktien wie Advantest, Kioxia und Fujikura.
  • Rekordmeilensteine: Der Index erreichte diese Woche aufeinanderfolgende Rekordhöchststände mit einem Intraday-Höchstwert von 71.952,99.
  • Geopolitische Gegenwinde: Gestoppte Friedensgespräche zwischen den USA und dem Iran sowie Gewinnmitnahmen vor dem US-Feiertag sorgten für Volatilität und dämpften die Gewinne am Freitag.