SoftBank Weighs $20B Bond Sale to Refinance Its OpenAI Bet
2 min readSoftBank is talking to banks about selling between $10 billion and $20 billion of bonds, and the money is earmarked for one thing: paying down the debt behind its enormous stake in OpenAI. It would be one of the largest corporate bond sales tied to a single AI bet.
How SoftBank got here
Masayoshi Son committed SoftBank to investing close to $65 billion in OpenAI, with the full amount due by October. To move fast, the Japanese group took out a $40 billion bridge loan earlier this year. Bridge loans are short-term by design. They are meant to be replaced by cheaper, longer-dated funding once the deal is done, and that replacement is now coming due.
The complication is SoftBank’s credit rating, which sits below investment grade. Junk-rated borrowers pay more, and SoftBank is raising this money into a market already absorbing record volumes of AI-linked debt from data center operators and chipmakers.
What is on the table
According to a Bloomberg report picked up by Business Today, the notes could be denominated in both US dollars and euros, with a launch as early as September. A SoftBank spokesperson said the company is considering various options to refinance the bridge loan and that nothing has been decided, including the size of any individual tranche.
Even at the top of the range, $20 billion would cover only half the bridge. That suggests further raises, asset sales, or both. SoftBank has previously trimmed holdings in other portfolio companies to fund its AI push.
Why it matters
This is the clearest look yet at how Asia’s most aggressive AI investor is actually financing its position. SoftBank is not deploying spare cash. It is borrowing at junk-rated spreads against a private company whose losses are still widening, and the interest bill starts immediately while any return depends on an OpenAI listing that has not been scheduled.
It also matters for OpenAI. A funding partner that has to refinance in public markets introduces a dependency neither side fully controls. If investor appetite for AI credit cools, the cost of Son’s bet rises with it. Watch the pricing on the September deal: the spread SoftBank pays will be a live read on how bond markets are valuing AI risk right now.
The AI boom has moved from equity to debt, and SoftBank is the biggest test case.