SoftBank Sells $11.1 Billion Bonds for OpenAI Payment as Shares Jump 7%

Q: Is SoftBank borrowing billions just to inflate a private AI valuation it relies on to secure even more loans?

SoftBank is not borrowing billions solely to inflate OpenAI’s valuation, but it is clearly using heavy debt to fund a private AI stake whose paper value can strengthen its borrowing capacity later. The facts are straightforward. SoftBank has committed about $64.6 billion to OpenAI and says the new $11.1 billion bond sale will mainly fund the final $10 billion tranche due Oct. 1, while also supporting general corporate purposes. It has also used a $40 billion bridge loan, a $10 billion margin loan against its OpenAI stake, retail bonds in Japan, and an expanded Arm-backed margin facility that can reach about $25 billion. This is a broad financing strategy, not a single valuation-driven maneuver. That said, the circularity concern is real. SoftBank is borrowing at speculative-grade rates, with the new bonds yielding roughly 7% to nearly 10%, to buy more of an illiquid private company. If OpenAI’s valuation rises, SoftBank’s net asset value improves, which can support more borrowing or refinancing. Analysts and investors have pointed to that feedback loop as a genuine risk, especially because OpenAI is private and hard to monetize quickly. The key point is that this depends less on deliberate “inflation” than on market confidence holding up. SoftBank is effectively betting that OpenAI’s future value will justify today’s expensive leverage. If OpenAI’s valuation, Arm’s share price, or credit-market access weakens, SoftBank’s financing model becomes much more fragile.

2 articles · Updated · CNBC · Sep 24

$11.1 billion in new bonds will fund SoftBank’s $10 billion final payment for its OpenAI follow-on investment, with the tranche expected to close on Oct. 1.
SoftBank said the sale includes $10 billion of dollar-denominated senior notes and 1 billion euros, or about $1.14 billion, of euro notes, with remaining proceeds earmarked for general corporate purposes.
Shares rose more than 7% in Tokyo’s first trading session after a three-day holiday, signaling investor support even as the fundraising highlights the scale of Masayoshi Son’s AI push.
The February deal will lift SoftBank’s cumulative OpenAI investment to $64.6 billion and give it about a 13% stake, while investors keep watching the effect of higher leverage on its balance sheet.