Stock Market Impact: SoftBank Group Corp shares jumped over 13% to 8,546 yen, lifting the Nikkei 225 by about 1% and making SoftBank the most valuable Japanese company with a market cap of 48 trillion yen ($305.8 bn).
Listed Companies and Sectors: The rally was driven by AI optimism, notably SoftBank’s ~90% stake in Arm Holdings, whose shares have more than tripled in 2026, and a disclosed gain on its investment in OpenAI. Related tech firms NVIDIA and Microsoft were mentioned for using Arm‑based chips.
Investment Flows: SoftBank pledged €75 billion ($87.3 bn) to develop AI infrastructure in France over the next five years, indicating significant overseas AI‑related capital deployment.
Interest Rates, Inflation, Liquidity: No specific information provided.
Fiscal or Monetary Policy: No specific information provided.
