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SoftBank Group Chairman Masayoshi Son. Along with expectations for the company’s future growth, investors are buying the company’s shares as a way to gain access to OpenAI. (Nikkei montage/Source Photo by Nanami Sato)

Investors hopeful of future growth, but rising AI exposure a source of concern

JADA NAGUMO and LISA KIM

August 25, 2025 06:00 JST