Why is SoftBank stock surging today?

SoftBank Group Corp. stock experienced a notable surge of 9.1% today, reaching ¥6,372 during trading hours. This sharp recovery followed a significant drop of over 10% on Monday, triggered by OpenAI CEO Sam Altman's announcement that the company would not pursue a public offering in 2026. The relief came with the filing of updated IPO paperwork by SB Energy, SoftBank's data center and power infrastructure subsidiary.

The document outlined plans to sell up to $500 million in new shares to Japanese investors as part of a U.S. listing, potentially valuing the unit at approximately $50 billion. Nvidia's commitment of $1.5 billion to SB Energy in a private placement, coupled with OpenAI's warrants worth around $5.5 billion, bolstered the appeal of the offering and demonstrated strong institutional backing.

Additionally, SoftBank's $25.9 billion credit line repayment deadline on September 15 was successfully addressed, as the company secured a new $11.87 billion two-year facility from roughly 20 financial institutions. This development surpassed the initial $10 billion target and effectively eliminated a critical refinancing risk. The positive momentum from SoftBank's stock rally contributed to a 0.9% rise in the Nikkei 225 index.