SoftBank Group is trading at ¥6,377, up 3.69%, with no confirmed catalyst identified.
- No verified company announcement dated September 28 or clear catalyst directly explaining the move surfaced in available reporting.
- SoftBank’s recently reported financing for its OpenAI investment came earlier and does not establish the reason for this session’s rise.
- Available index data shows the Nikkei rose 1.30% on September 25, not September 28; broader-market causation remains unconfirmed.