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SoftBank borrowed more than it asked for, on the same day its shares had their worst session
since July. The SoftBank OpenAI loan came in at $11.87 billion, a two-year facility from
about 20 banks, against an original $10 billion target. Bloomberg reported the terms on 14 September 2026,
citing people familiar with the arrangement. The gap between what lenders would fund and what equity
investors would tolerate is the story.
Story sections
What the SoftBank OpenAI loan consists of
The facility runs for two years. Around 20 banks committed to it, and the book closed above the target
rather than below it. Oversubscription of that size signals confidence among lenders.
It joins an existing stack. SoftBank already holds a $10 billion margin loan secured against its OpenAI
shares, with Goldman Sachs and JPMorgan among the lenders. Bankers have also discussed a bond sale of up to
$20 billion.
The company said last week it would repay the remaining $25.9 billion of a $40 billion bridge loan on 15
September. Taken together, SoftBank has committed roughly $65 billion to OpenAI by October, for a stake
reported at around 13 per cent.
Why the shares fell while the banks said yes
SoftBank stock dropped as much as 13 per cent on Monday, its steepest fall since 17 July. The trigger was
not the loan itself.
Leading AI executives spent the weekend arguing publicly for a slower pace of frontier-model development.
Markets read that as a demand signal and repriced the AI hardware and infrastructure complex. SoftBank, as
the most visible listed proxy for OpenAI exposure, took a heavier hit than most.
So two verdicts arrived on the same day. Credit markets funded the position above target. Equity markets
marked it down. We covered the underlying argument in our report on
the AI slowdown call from
Amodei, Altman and Musk.
The leverage question the SoftBank OpenAI loan raises
Borrowing against a private stake works while the stake’s value holds. It compounds against you when the
value falls, because collateral requirements do not wait for a recovery.
Timing adds to the pressure. Sam Altman told Fortune that OpenAI will not proceed with a public offering
this year while it addresses safety concerns. An IPO is the cleanest route to liquidity for a stake of this
size. Pushing it out extends the period during which SoftBank services debt without a market price to
refinance against.
None of that makes the position unsound. It does mean SoftBank’s cost of capital becomes a variable worth
watching for anyone in the OpenAI orbit — follow-on rounds, secondary sales and listing timelines all move
with it.
There is precedent for both outcomes. SoftBank’s concentrated bets have produced its best returns and its
worst. The Alibaba stake funded two decades of expansion. The Vision Fund’s later vintages did not. A single
position this large works exactly as well as the underlying asset does.
What differs this time is the funding mix. Earlier bets leaned on fund structures with outside limited
partners sharing the downside. This one leans on debt secured against the asset itself, which keeps more of
the upside and all of the risk on SoftBank’s own balance sheet.
What it says about the AI funding cycle
Private credit is still flowing into AI infrastructure at scale. Our reports on
Positron AI’s $875 million
round and Google’s
Finnish data-centre investment show the same pattern in different corners of the stack.
What has changed is the divergence. Lenders and public shareholders are now pricing the same assets
differently, and they are doing it in the same week. That gap tends not to persist. One side usually moves
toward the other.
What to watch on SoftBank’s balance sheet
Three markers will show which way it resolves. First, whether the $20 billion bond sale proceeds, and at
what spread. Second, whether the margin loan against the OpenAI stake gets topped up or repriced. Third,
whether the October funding target of roughly $65 billion is met in full.
Also watch OpenAI’s own signals on timing. Any change to the listing schedule feeds straight back into
SoftBank’s refinancing options.
Questions on the financing
How large is the loan?
$11.87 billion, arranged as a two-year facility from about 20 banks, above an initial $10 billion target.
Who reported it?
Bloomberg and The Japan Times reported the terms on 14 September 2026, citing people familiar with the matter.
How much has SoftBank committed to OpenAI?
Roughly $65 billion by October, for a stake reported at around 13 per cent.
Why did the shares fall?
AI executives called publicly for slower frontier development over the weekend, and markets repriced AI-linked stocks. SoftBank fell as much as 13 per cent.
Is OpenAI planning to list this year?
Sam Altman said it would not proceed with a public offering this year while the company addresses safety concerns.
Primary sources
- The Japan Times — SoftBank gets upsized $11.9 billion loan in OpenAI funding push. https://www.japantimes.co.jp/business/2026/09/14/companies/softbank-loan-openai/
- Bloomberg — SoftBank Gets Upsized $11.9 Billion Loan in OpenAI Funding Push. https://www.bloomberg.com/news/articles/2026-09-14/softbank-gets-upsized-11-9-billion-loan-in-openai-funding-push
- Business Standard — SoftBank Group gets upsized $11.9 billion loan in OpenAI funding push. https://www.business-standard.com/world-news/softbank-group-gets-upsized-11-9-billion-loan-in-openai-funding-push-126091400091_1.html
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