SoftBank raises $11.1 billion in record high-yield bonds for OpenAI

By Splitfeed EditorialLast updated Sep 26, 2026, 19:17 UTC

On September 24, 2026, SoftBank issued $11.1 billion in high-yield bonds, a record for the Asia-Pacific region, to fund the final $10 billion tranche of its committed investment in OpenAI. The bonds carry a yield of 9.41%, and a euro-denominated portion of the offering totaled roughly 9.75 billion euros. SoftBank shares fell 3.2% on the day the deal was announced. The total raise exceeding the tranche size itself reflects the cost of structuring the transaction.

The deal matters because junk-rated debt at near-double-digit yields represents a significant financial commitment for SoftBank, one that leaves little margin for error if OpenAI's commercial returns disappoint. The raise is the largest of its kind in the Asia-Pacific region, which means SoftBank is not simply borrowing at elevated cost but setting a new benchmark for how aggressively a firm can tap debt markets to back a single private AI company. Whether that reflects confidence in OpenAI's trajectory or a lack of alternative financing options is genuinely in dispute.

The anti-AI camp sees the transaction as a warning signal. Mika Peltokorpi pointed to the near-10% yield as a potential precursor to insolvency, citing historical patterns. Jesse Felder highlighted that bond investors are pricing in escalating risk and making SoftBank pay accordingly. Judah Grunstein drew a parallel to past speculative technology rushes financed by debt sold to household investors. Blaise Ulysse Bernard Collins framed the deal not as ambition but as a choice between borrowing and collapse, while Zubiqo argued that piling fresh debt onto a balance sheet for a 13% minority stake in one private firm leaves no buffer if returns stumble. The Japan Times, occupying a more measured position, noted that SoftBank dangled yields above anything it had previously paid, underscoring that the cost of this particular bet is historically high. The pro-AI camp has not yet published reactions to this story; typically that camp would argue that early, large-scale investment in a frontier AI company like OpenAI positions SoftBank ahead of competitors and that the yield simply reflects current credit market conditions rather than fundamental risk.

The clearest near-term indicator to watch is how SoftBank's bond yields trade in secondary markets in the weeks following the offering, alongside any updates on OpenAI's revenue milestones or valuation that could shift the risk calculus investors have priced in.