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SoftBank plans record ¥1T bond sale to fund OpenAI investments

Reported by Cryptobriefing
Aug 24, 2026· 3 min read
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Key Takeaways
  • • SoftBank Group plans to issue ¥1 trillion ($6.3 billion) in retail-targeted corporate bonds, the largest retail bond issuance ever by a Japanese company, marking the conglomerate's third bond sale in 2026.
  • • Proceeds will be used to repay existing debt, fund mergers and acquisitions in physical AI, and potentially repay a bridge loan secured from Goldman Sachs, JPMorgan, and Apollo related to OpenAI investments.
  • • SoftBank has committed a total of ¥10 trillion in investments to OpenAI by October 2026, leveraging its OpenAI stake as collateral for the bridge facility.
  • • The seven-year retail bond sale represents SoftBank's aggressive capital-raising strategy amid accelerating AI infrastructure spending, including a $200 million investment in Gravis Robotics and development of the world's largest single data center in Ohio for OpenAI.
  • • Rising valuations of Arm Holdings, in which SoftBank holds an 87% stake, provide additional financial flexibility supporting the conglomerate's expanding investment commitments.
Summary
SoftBank Group, led by Chairman Masayoshi Son, is preparing a record ¥1 trillion ($6.3 billion) retail bond issuance, surpassing the previous record of ¥600 billion ($4 billion) set by the company in 2025. The seven-year bond offering marks SoftBank's third retail bond sale this year, following issuances in April and June. When including institutional investors, the total size matches the ¥1 trillion record previously set by NTT Finance in 2020, underscoring the scale of capital mobilization.

The bond proceeds will be deployed across multiple strategic priorities. Primary uses include repayment of existing corporate debt and funding for mergers and acquisitions concentrated in physical AI infrastructure. The company acquired ABB's industrial robotics division and recently invested $200 million in Gravis Robotics, a Swiss developer of autonomous-driving software for construction equipment. Notably, the proceeds may also be used to repay a bridge loan that SoftBank secured from major financial institutions including Goldman Sachs, JPMorgan, and Apollo, with the company's OpenAI stake serving as collateral.

SoftBank's OpenAI investment strategy represents a substantial capital commitment. The conglomerate has pledged ¥10 trillion in total investments to OpenAI by October 2026. To support this commitment, the company secured a bridge facility against its OpenAI holdings in August 2026, creating a structured financing arrangement that this bond sale may partially retire. Additionally, SoftBank subsidiary SB Energy is developing what is being described as the world's largest single data center in Ohio, which OpenAI has committed to lease for a 20-year term, positioning the group at the infrastructure core of large-language model scaling.

The timing of this capital raise reflects SoftBank's broader pivot toward AI infrastructure investment. The rising share price of Arm Holdings, in which SoftBank maintains an 87% stake, has enhanced the conglomerate's balance sheet capacity and provided strategic flexibility to pursue larger capital commitments. This bond issuance, combined with the earlier $10 billion credit facility secured in August, demonstrates SoftBank's multi-pronged approach to financing its AI ambitions while managing refinancing obligations across its diversified portfolio.

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Sources

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Cryptobriefing SoftBank plans record ¥1T bond sale to fund OpenAI investments