SoftBank shares fell 12% after reports that OpenAI may delay its IPO until 2027; expectations of a windfall from OpenAI's debut helped support Softbank's stock (Aya Wagatsuma/Bloomberg)

Aya Wagatsuma / Bloomberg: SoftBank shares fell 12% after reports that OpenAI may delay its IPO until 2027; expectations of a windfall from OpenAI's debut helped support Softbank's stock — SoftBank Group Corp.'s stock fell by 12% on concerns that OpenAI may hold off on an initial public offering until next year and delay returns for its Japanese backer.