Introduction
SoftBank Group has secured an $11.87 billion loan to support its investment in OpenAI, exceeding its earlier target of $10 billion, according to Bloomberg reporting on September 14, 2026. The Japanese conglomerate finalised the two-year facility the previous week, drawing commitments from roughly 20 banks, even as its own shares fell as much as 13 percent on the same day, the steepest single-day drop since July.
What the Loan Covers
The financing supports SoftBank's continued build-up of its stake in OpenAI, with the company's total commitment to the AI lab set to reach approximately $64.6 billion by October 2026, giving it roughly a 13 percent ownership position. This latest loan is separate from an existing $10 billion margin facility already secured against SoftBank's OpenAI shares, meaning the company is now running multiple parallel financing tracks to fund its position rather than relying on a single source of capital.
Key Facts
- SoftBank secured an $11.87 billion two-year loan, up from an original $10 billion target.
- Commitments came from around 20 banks.
- SoftBank's cumulative investment in OpenAI is set to reach approximately $64.6 billion by October 2026.
- SoftBank shares fell as much as 13% on September 14, its sharpest single-day drop since mid-July.
- SoftBank plans to repay $25.9 billion remaining on a separate $40 billion bridge loan by September 15.
A Pattern of Debt-Funded AI Bets
This is far from SoftBank's first major financing move tied to OpenAI in 2026. The company secured a $40 billion unsecured bridge loan in March, added a $10 billion margin loan backed by its OpenAI shares in August, with Goldman Sachs and JPMorgan among the lenders, and is reportedly considering a further $10 billion to $20 billion bond sale. In total, SoftBank has raised roughly $37 billion this year through a combination of bond sales and loans specifically tied to its AI investment strategy.
Table: SoftBank's 2026 OpenAI Financing Timeline
| Month | Financing Move |
|---|---|
| March 2026 | $40 billion unsecured bridge loan |
| August 2026 | $10 billion margin loan backed by OpenAI shares |
| September 2026 | $11.87 billion two-year loan, exceeding $10 billion target |
| Planned | Potential $10-20 billion bond sale |
Why the Timing Raised Eyebrows
The oversubscribed loan arrived on the same day OpenAI CEO Sam Altman told Fortune the company would not pursue an IPO this year, citing safety-related concerns, and the same weekend Anthropic CEO Dario Amodei published an essay calling for AI labs to deliberately pace frontier development. Against that backdrop of growing industry caution, SoftBank's continued aggressive debt-funded expansion of its OpenAI position struck some investors as increasingly risky, contributing to the sharp share price decline.
The Structural Risk in SoftBank's Approach
SoftBank's margin loan, secured against its OpenAI shares, reportedly includes valuation covenants, meaning a significant decline in OpenAI's assessed worth could trigger repayment obligations or forced asset sales at an inopportune time. With SoftBank's credit rating sitting at BB+, one notch below investment grade, the company's ability to keep accessing debt markets on favourable terms depends heavily on continued investor confidence in both SoftBank itself and the broader AI investment narrative underpinning its strategy.
Expert Insight
Financial analysts tracking SoftBank's financing strategy note that the loan's oversubscription, exceeding the original target by nearly 19 percent, signals that banks remain willing to fund SoftBank's OpenAI exposure even as public equity investors grow more cautious. That divergence between bank lender appetite and public market sentiment reflects differing risk assessments: banks are extending secured, time-limited credit, while equity investors are absorbing the full downside risk of any reassessment of OpenAI's valuation.
Key Takeaways
- SoftBank secured an $11.87 billion loan for its OpenAI investment, exceeding its $10 billion target.
- SoftBank shares fell as much as 13% the same day, their steepest drop since July.
- The company's total OpenAI commitment is set to reach roughly $64.6 billion by October 2026.
- SoftBank has raised approximately $37 billion in debt this year tied to its AI investment strategy.
FAQ
How much did SoftBank borrow for its OpenAI investment?
SoftBank secured an $11.87 billion two-year loan, exceeding its original $10 billion target, with commitments from around 20 banks.
Why did SoftBank's stock fall?
Shares fell as much as 13% amid growing investor concern about the pace and scale of AI-related spending, coinciding with industry-wide safety concerns raised by OpenAI and Anthropic leadership.
How much has SoftBank committed to OpenAI in total?
SoftBank's cumulative investment is expected to reach approximately $64.6 billion by October 2026, giving it roughly a 13% stake.
Conclusion
SoftBank's ability to secure oversubscribed financing even amid market jitters underscores continued lender confidence in its OpenAI bet, but the sharp share price reaction suggests public investors are growing warier of how much debt-funded risk the conglomerate is willing to absorb. With additional bond issuance reportedly under consideration, SoftBank's financing strategy is likely to remain under close scrutiny in the months ahead.
