SoftBank Group is trading 5.83% down at ¥6,310, with coverage linking the October 2 decline to completion of its final $10 billion OpenAI investment tranche.

  • The tranche brought its total investment to $64.6 billion and its stake to about 13%.
  • Investors scrutinized the scale of its AI commitments and financing needs.
  • The latest available session data is for October 2, ahead of the October 5 session; no confirmed October 5-specific catalyst was found.