Why SoftBank’s OpenAI Windfall Hasn’t Ended Its Debt Worries

The bigger commitment: $30 billion more into OpenAI

SoftBank said on February 27, 2026, that it had entered a definitive agreement to make follow-on investments of $30.0 billion in OpenAI through SoftBank Vision Fund 2 . Upon completion, SoftBank said its cumulative OpenAI investment was expected to reach $64.6 billion and represent an ownership interest of approximately 13%, subject to closing conditions .

That scale explains why investors are treating SoftBank less like a diversified technology holding company and more like a high-conviction proxy for OpenAI. The upside is obvious if OpenAI keeps repricing upward. The risk is that SoftBank’s exposure becomes increasingly concentrated in one private company whose valuation is hard to test in public markets.

Why the debt worries have not gone away

The clearest warning came from S&P Global. Bloomberg reported that S&P cut SoftBank’s outlook to negative from stable while affirming a BB+ long-term issuer credit rating, citing the risk that the planned additional $30 billion OpenAI investment could hurt SoftBank’s liquidity and the credit quality of its assets .

Financing is the other pressure point. Banks arranged a $40 billion bridge loan for SoftBank’s OpenAI investment, and that loan was being syndicated to additional lenders, according to people familiar with the matter cited by The Star . A bridge loan can help SoftBank move quickly, but it also puts pressure on the company to replace short-term financing with more durable funding or cash proceeds later.

There are also signs that lenders are not treating OpenAI-backed borrowing as risk-free. SoftBank reportedly cut the target for a margin loan backed by its OpenAI stake from $10 billion to as low as $6 billion after hesitation from some creditors; the report said creditors were concerned about the difficulty of valuing an unlisted company like OpenAI .

Future AI spending adds to the overhang

The funding question is not limited to one OpenAI check. Reports on SoftBank’s outlook have linked investor concern to its planned OpenAI investment, data-centre spending and other AI acquisition commitments . Bloomberg also noted that SoftBank’s stock rally faced a test because investors wanted reassurance that the company’s multibillion-dollar OpenAI bet would justify the balance-sheet risk .

This is the central trade-off: SoftBank’s AI exposure is the reason earnings can look powerful, but the same exposure can make credit investors more sensitive to leverage, liquidity and asset concentration.

What could ease investor concern

The cleanest solution would be a cash exit or a more liquid market price for OpenAI. An OpenAI IPO would give SoftBank a clearer path to monetize part of its stake or use a public valuation to support financing, but the sources here do not establish a completed IPO or a binding timetable. Until OpenAI is public, lender concerns about valuing an unlisted company remain relevant .

Another possible route is a new listed AI vehicle. The Financial Times reported, via Reuters, that SoftBank was planning to create and list a U.S.-based AI and robotics company called Roze, which would be involved in building data centres; Reuters said it could not immediately verify the report . If such a listing happened, it could create another financing or valuation channel, but it remains a reported plan rather than a confirmed exit.

Asset sales are also part of SoftBank’s historical playbook. Fortune reported that SoftBank sold its Nvidia stake for $5.8 billion in October as it focused on artificial intelligence . That shows SoftBank can recycle capital, but it does not by itself answer whether future OpenAI-related funding needs can be met without straining credit metrics.

The bottom line

SoftBank’s January–March quarter can look strong because a higher OpenAI valuation lifts the accounting value of its stake. But investors are asking a different question: can SoftBank finance a $64.6 billion cumulative OpenAI exposure, plus broader AI ambitions, without overloading the balance sheet ?

If OpenAI keeps growing and eventually provides a liquid exit, SoftBank’s aggressive financing may look justified. If valuations wobble, lender appetite weakens or an IPO remains distant, the same paper gains that boost profit could leave SoftBank with a much harder debt problem.