SoftBank Seeks More Than $11 Billion in Debt for Its OpenAI Bet

SoftBank Group plans to sell $10 billion of dollar notes alongside €1 billion of euro debt to finance its expanding investment in OpenAI. [1][3] Most of the proceeds are earmarked for a third $10 billion follow-on payment to OpenAI, according to the reported financing terms. [3] The dollar bonds will mature in 3.5, 5.5 and 7.5 years, while the euro notes have four- and six-year maturities. [3]

Pricing is expected on September 24, with settlement scheduled for September 29, according to the term sheet. [3] SoftBank’s bonds are rated BB+ by both S&P and Fitch, placing the group in speculative-grade territory. [3] Bloomberg Intelligence analyst Kirk Boodry said issuing the bonds pushes the maturity out by several years and reduces refinancing urgency. [3]

SoftBank is exchanging shorter-term bridge financing for longer-dated bonds, giving its OpenAI investment more time to develop before repayment pressure intensifies. That timing advantage comes with an explicit trade-off: the borrowing remains speculative grade, and interest costs and leverage still matter for shareholders. The transaction therefore ties more of SoftBank’s financial exposure to whether OpenAI’s growth can translate into sufficient value over the bonds’ extended maturities. What the sources don't address: what yields investors will demand when the bonds are priced.