SoftBank's $11 Billion Junk Bond Sets Record-High Coupon as Concentrated Bet on OpenAI Sparks Debate
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SoftBank issued $11 billion in junk bonds at a record 9.75% coupon, choosing costly debt over selling AI assets — with $64.6 billion committed to OpenAI alone, the market is repricing the risk of an all-in bet.
Is a 9.75% coupon really justified?
SoftBank completed an $11 billion junk-bond sale last month at 9.75% — the highest coupon in the company's history.
This means → SoftBank owes roughly $1.07 billion a year in interest on this single deal.
For comparison, Alphabet's 2033 bond issued around the same time carries a coupon of just 5.2% — nearly half. In plain terms = lenders see SoftBank as a far riskier borrower than Google's parent.
Why borrow at punishing rates instead of selling assets?
SoftBank Investment Advisors CEO Alex Clavel told Reuters plainly: "We borrow heavily because we don't want to sell assets we believe will keep appreciating."
SoftBank previously sold stakes in Nvidia and T-Mobile US to fund AI bets. The shift to high-cost debt to keep those assets marks a clear strategy change.
This means → SoftBank is wagering that future appreciation will far exceed the 9.75% annual cost of carry. If appreciation disappoints, the debt becomes a drag, not a bridge.
"Betting on red or black" — how concentrated is the risk?
SoftBank's commitment to OpenAI alone stands at $64.6 billion. MST Financial analyst David Gibson put it in casino terms: "SoftBank used to bet on many numbers on the roulette wheel. Now it's red or black — all or nothing."
The market is already responding: SoftBank's shares have fallen 38% from a June record of ¥8,632; its credit-default-swap spread — the cost to insure against a default — has widened 24% over the same period.
This reflects a twin signal: both equity and credit investors are pricing in the risk of extreme single-name concentration.
When can the OpenAI bet actually pay off?
OpenAI is the centrepiece of SoftBank's AI strategy, following the playbook used with Alibaba and Arm — Arm's valuation has grown fivefold since its 2023 IPO.
But the exit timeline is uncertain: OpenAI CEO Sam Altman has said the company will not pursue an IPO this year, citing AI-safety concerns. OpenAI also faces competition from Anthropic and low-cost Chinese AI labs.
In plain terms = SoftBank's biggest single card cannot yet be cashed in on public markets — when it can be sold, and at what price, remains unknown.
Beyond capital — what else is SoftBank locking in?
Clavel stressed that the relationship goes beyond writing cheques: "We see OpenAI as a partner — this relationship delivers strategic as well as financial value."
Specifically, OpenAI is both an investor in and a customer of SB Energy, SoftBank's data-centre subsidiary now preparing an IPO at a reported target valuation of $50 billion.
This means → SoftBank has woven its bets into a single web — OpenAI is simultaneously a portfolio company and a client of a subsidiary, binding success and failure tightly together.
How loud is the opposition?
Asymmetric Advisors' Amir Anvarzadeh recommends shorting SoftBank shares, noting "the scale of these bets is something we've never seen before."
Marlborough fixed-income fund manager James Athey was blunter: "SoftBank is too aggressive, too concentrated, too all-in — we wouldn't prioritise it under any circumstances."
This reflects a consensus forming across both equity and credit investors: scepticism about SoftBank's current strategy is no longer a fringe view but a broadly shared risk assessment.
市场有风险，内容仅供研究参考，不构成投资建议。