SoftBank is turning to global bond markets to finance another $10 billion investment in OpenAI, launching more than $11 billion of dollar- and euro-denominated debt in one of the largest corporate bond offerings in the Asia-Pacific region.
SoftBank is doubling down on its OpenAI strategy — and this time, the financing is coming from the bond market.
The Japanese investment group has launched a sale of $10 billion in U.S. dollar-denominated notes and €1 billion in euro-denominated notes, equivalent to roughly $11.15 billion in total.
The proceeds will be used primarily to fund SoftBank’s $10 billion payment for the third tranche of its follow-on investment in OpenAI, which is expected to close on October 1
The transaction will also replace a $10 billion bridge loan that SoftBank had previously arranged to finance the investment.
One of the region’s biggest corporate bond deals
The DeepMind Institute’s first collection consists of four essays covering very different aspects of the AGI transition.
The scale of the offering makes it notable beyond the OpenAI investment itself.
If completed at the planned size, the transaction would become the largest non-financial corporate bond deal on record across Asia-Pacific and Japan, surpassing the $10.93 billion offering by 7-Eleven in 2021, according to LSEG data.
It would also rank among the largest corporate bond transactions globally this year.
The dollar portion of the offering is divided across three maturities:
- 3.5 years
- 5.5 years
- 7.5 years
The euro-denominated notes are being issued with maturities of:
- 4 years
- 6 years
The bonds are expected to be priced on September 24 and settle on September 29.
SoftBank is financing OpenAI at enormous scale
The bond sale illustrates just how significant OpenAI has become within SoftBank’s investment strategy.
Rather than using only existing cash or selling assets to finance the next investment, SoftBank is raising fresh capital through the debt markets.
The structure effectively spreads the financing cost over several years while allowing SoftBank to complete the next stage of its OpenAI commitment.
For investors, however, that also means paying attention to what happens to SoftBank’s own balance sheet as its AI investments continue to grow.
The bridge loan is being replaced
SoftBank had already secured a $10 billion bridge loan facility to support its OpenAI investment.
The new bond offering is designed to replace that short-term financing.
That changes the maturity profile of the borrowing.
Instead of relying on temporary bridge financing, SoftBank will have longer-term unsecured debt outstanding across several maturities.
The approach gives the company more time to manage the financing associated with its OpenAI investment, but it also adds to the company’s overall debt burden.
Fitch gives the notes a BB+ rating
Fitch Ratings has assigned the proposed bonds a BB+ rating.
The rating agency expects SoftBank’s debt to increase as the company funds its committed investments, while also indicating that it expects the group to maintain adequate liquidity and access to capital markets.
That balance is important to SoftBank’s strategy.
The company has increasingly positioned itself as an investor in the infrastructure and technologies expected to underpin the AI economy.
Financing those investments requires substantial access to capital, particularly when individual commitments can reach billions of dollars.
SoftBank’s ability to continue raising that capital is therefore an important part of its broader investment strategy.
OpenAI is becoming a major financing story
The bond transaction also highlights the unusual financial requirements surrounding the current AI boom.
Building frontier AI systems requires enormous amounts of computing infrastructure, data-center capacity, energy and specialized hardware.
As AI companies expand, their investors increasingly need to provide capital at a scale that resembles major infrastructure projects rather than conventional software investments.
SoftBank is approaching the opportunity from the investor side.
Its OpenAI exposure gives the company a stake in one of the world’s most valuable AI businesses, while its financing strategy shows how much capital it is willing to mobilize to maintain that position.
The debt adds another layer to SoftBank’s AI strategy
SoftBank has spent years building a portfolio around technology companies, but artificial intelligence has increasingly become central to its investment strategy.
The company has also been expanding its broader AI-related ambitions in Japan. SoftBank says it is working with OpenAI on “Crystal intelligence,” an enterprise AI initiative designed to connect AI agents across corporate operations.
That means the relationship with OpenAI extends beyond a simple financial investment.
SoftBank is positioning itself as both an investor in AI and a potential user and distributor of AI technology.
The latest bond sale adds another piece to that strategy.
The bigger question is how much AI exposure SoftBank wants
The transaction shows the scale at which SoftBank is willing to finance its OpenAI position.
But it also illustrates the trade-off involved in an increasingly debt-funded investment strategy.
The company gains additional exposure to a rapidly expanding AI ecosystem without needing to fund the entire investment from existing cash.
At the same time, the debt used to finance those commitments becomes part of SoftBank’s financial obligations.
That makes future access to capital markets particularly important.
For now, SoftBank is demonstrating that it can still tap investors with a multibillion-dollar offering.
The more interesting question may be what comes next.
As OpenAI and the broader AI infrastructure ecosystem require ever larger amounts of capital, SoftBank’s ability to keep financing its ambitions could become almost as important as the investments themselves.
