SoftBank Adds Repayment Guarantee to Revive $10B OpenAI Loan

Watching SoftBank restart its $10 billion margin loan against its OpenAI stake is watching a very specific tension in private AI finance play out in real time. Reuters is reporting that talks have reopened after earlier rounds stalled, and the new pitch includes a concession that changes the shape of the deal: SoftBank is now offering to guarantee repayment of the loan, so lenders would have recourse to SoftBank itself if the OpenAI shares used as collateral decline in value.

That is not a small change. The first version of this loan asked banks to sit purely on OpenAI equity as security, and coverage picked up by Yahoo Finance confirms banks rejected that structure. The lending consortium is expected to include Goldman Sachs, JPMorgan Chase, and Mizuho Financial Group, all three of whom are already deep in SoftBank's OpenAI plumbing through the separate $40 billion bridge facility that funds the follow-on investment and matures in March 2027.

Why this matters if you don't follow bank syndication news: the loan is one of the mechanisms holding up the pace of SoftBank's AI commitments, and lender caution here reflects the general difficulty of valuing private-company stakes whose shares don't trade freely. When the New York Times reported in late June that OpenAI is leaning toward delaying its IPO to 2027, SoftBank shares fell more than 12% in a single session, because the runway to refinance the bridge got shorter. The guarantee is a way of shifting that gap risk back onto SoftBank's own balance sheet in exchange for getting the deal done at all.

The honest caveat is that the reporting does not tell you the final size of the reopened facility, its pricing, or whether the guarantee is full recourse or something narrower. SoftBank had already been discussing revising the target to as low as $6 billion in May, and lender appetite has moved around. What to watch is who else joins the syndicate and whether more holders of unlisted AI equity start using this template, because if guaranteed margin loans against private AI shares become normal, the private-to-public bridge for these valuations gets a lot easier to build.