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SoftBank Group Shares Surge Almost 20% on OpenAI, SB Energy IPOs

Bloomberg Markets · May 21, 2026, 1:11 AM · Also reported by 4 other sources

SoftBank Group Corp. shares surged almost 20% in morning Tokyo trading after a plan surfaced that OpenAI was preparing to file for an initial public offering.

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SoftBank Group Shares Surge Almost 20% on OpenAI, SB Energy IPOs

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