SoftBank Raises $11.1B to Fund OpenAI Investment

SoftBank Group is bolstering its position in the artificial intelligence sector with a $11.1 billion bond offering, specifically earmarked to fund a further $10 billion investment in OpenAI. The bond issuance, comprised of both US dollar and Euro-denominated tranches, signals a continued commitment to OpenAI despite a broader shift in SoftBank’s portfolio away from semiconductor exposure.

The bond offering includes approximately $10 billion in USD-denominated bonds with varying maturities (3.5, 5.5, and 7.5 years) and interest rates ranging from 8.625% to 9.75%. An additional $1.1 billion equivalent (5 billion EUR) is offered in Euro-denominated bonds, with maturities of 4 and 6 years and interest rates of 7.125% and 8.000%, respectively. The proceeds will be used to cover the final $10 billion tranche of a previously committed $300 billion investment in OpenAI, expected to be executed on October 1, 2026, and for general corporate purposes.

This move allows SoftBank to simultaneously fund its ambitious AI strategy and streamline its balance sheet by terminating a remaining $10 billion draw on a $400 billion bridge facility. The bond issuance was secured with ratings of BB+ from both S&P Global Ratings Japan and Fitch Ratings Japan, indicating a non-investment grade credit risk. The bonds will be offered in overseas markets, excluding Japan, complying with Rule 144A and Regulation S.

SoftBank’s aggressive investment in OpenAI comes amid a global boom in AI development, spurred by advancements in generative AI and large language models. The company's strategy reflects a broader industry trend of concentrating capital in key AI players. The bond offering’s relatively high interest rates reflect current market conditions and SoftBank’s credit profile, as well as the demand for capital to capitalize on the growth potential of OpenAI and other AI ventures.