SoftBank Group has priced a huge foreign-currency bond sale worth approximately $11.1 billion, giving investors a clearer view of how the Japanese technology group is financing its expanded bet on OpenAI. The deal combines dollar and euro notes and is tied to the final portion of SoftBank's previously announced follow-on investment.
The financing is significant far beyond one company. It shows how the artificial-intelligence boom is moving from venture-style funding into the global bond market, where borrowing costs, credit ratings and repayment timelines are visible to a much wider group of investors.
SoftBank bond sale key facts
- SoftBank priced $10 billion of US dollar notes and €1 billion of euro notes.
- The combined value is approximately $11.1 billion.
- The notes have maturities ranging from three-and-a-half to seven-and-a-half years.
- The dollar coupons range from 8.625% to 9.75%.
- SoftBank says proceeds will help finance the final $10 billion tranche of its $30 billion follow-on OpenAI investment and other general corporate purposes.
- Issuance is expected on September 29, 2026, subject to customary conditions.
How the bond package is structured
SoftBank's official senior-notes announcement lists three US dollar tranches: $1 billion due in three-and-a-half years at 8.625%, $4.5 billion due in five-and-a-half years at 9.25%, and $4.5 billion due in seven-and-a-half years at 9.75%.
The euro portion includes €500 million due in four years at 7.125% and another €500 million due in six years at 8%. SoftBank said the notes received BB+ ratings from both S&P and Fitch. Those ratings and relatively high coupons underline the price the group is paying to raise long-term capital for its AI strategy.
Where the money is going
SoftBank said it intends to use the net proceeds for general corporate purposes, including the third and final $10 billion tranche of a $30 billion follow-on investment in OpenAI. The company expects that tranche to close on October 1, subject to the investment agreement's conditions.
The group also plans to cancel the remaining $10 billion undrawn commitment under bridge-loan facilities arranged in March. In practical terms, the bond sale replaces temporary borrowing capacity with longer-dated funding.
This does not mean every dollar from the offering is legally ring-fenced only for OpenAI. “General corporate purposes” gives SoftBank flexibility, but the company explicitly identifies the final investment tranche as a central use of proceeds.
Why markets are watching the deal
SoftBank has built its current strategy around the belief that advanced AI will reshape software, chips, data centres and robotics. A debt package of this size makes that conviction measurable. Bondholders will focus not just on OpenAI's growth but on SoftBank's liquidity, asset values and ability to service expensive debt through different market cycles.
The sale also offers a signal for other technology groups. If demand remains strong for large AI-linked debt deals, more companies may use public bond markets to finance data centres, chips and strategic stakes. If borrowing costs stay elevated, however, the price of competing in AI could become a constraint even for the largest investors.
Readers tracking the commercial impact of global AI demand can also see our report on Singapore exports and AI-led electronics demand.
What happens next
The immediate dates to watch are the expected bond issuance on September 29 and the planned OpenAI investment closing on October 1. Investors will then look for updated disclosures on SoftBank's ownership position, leverage and liquidity.
The larger question is whether returns from the AI ecosystem eventually justify the group's cost of capital. The bond sale secures funding; it does not remove the execution and valuation risks attached to such a concentrated technology strategy.
Frequently asked questions
How much is SoftBank raising?
The dollar and euro offerings have an aggregate value of about $11.1 billion.
Is all of the money going directly to OpenAI?
SoftBank says the proceeds are for general corporate purposes, including the final $10 billion tranche of its follow-on OpenAI investment.
When are the bonds expected to be issued?
SoftBank's official announcement lists September 29, 2026 as the expected issue date.
