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Japan's Nikkei 225 jumps 3.66% to two-week high as chip stocks rally

Japan's Nikkei 225 jumps 3.66% to two-week high as chip stocks rally

Benchmark reclaims the 66,000 level as semiconductor shares surge on the back of a sharp rise in the Philadelphia Semiconductor Index, though yen strength weighed on some exporters.

Fact Check
Two BigGo Finance articles dated August 5, 2026 directly confirm the Nikkei 225 rose 3.66% to ¥66,300.44, reclaiming the 66,000 level and hitting a two-week high, driven by a >6% rise in the Philadelphia Semiconductor Index led by chip stocks, with yen strength pressuring exporters. TradingEconomics corroborates the ~66,000 level and semiconductor-led rally in early August 2026, and web search results confirm the Philadelphia Semiconductor Index was up more than 6% in the risk-on chip rally. Every element of the claim — the 3.66% gain, two-week high, 66,000 level, chip-stock rally driven by the Philadelphia Semiconductor Index, and yen strength weighing on exporters — is supported by matching primary reporting.
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Summary

Japan's Nikkei 225 extended its gains on Aug. 5, climbing 2,342.91 points, or 3.66%, to close at 66,300.44 and reclaim the 66,000 mark for the first time since July 23. The advance was driven by broad buying in semiconductor-related stocks after the Philadelphia Semiconductor Index rose more than 6% the previous day, with overseas investors helping lift names such as Advantest, Tokyo Electron and Ibiden. TOPIX also rose 2.13% to 4,046.17, while the JPX Prime 150 Index gained 1.81% to 1,692.25. Stronger regional equity markets, including South Korea's KOSPI and Taiwan's weighted index, supported sentiment, and some investors also pointed to a recovery in Kioxia Holdings after its recent earnings announcement. The stronger yen, however, remained a headwind after coordinated yen-buying intervention by the Japanese and U.S. governments, pressuring trading houses and some export-oriented shares.

Terms & Concepts
  • Philadelphia Semiconductor Index: A U.S. stock index tracking major semiconductor-related companies, often used as a gauge of sentiment toward chip shares.
  • TOPIX: Japan's broad Tokyo Stock Price Index, which tracks a wide range of companies listed on the Tokyo Stock Exchange.
  • risk-on sentiment: A market mood in which investors are more willing to buy assets seen as higher risk, such as equities.