SoftBank Plans Record ¥1 Trillion Bond Sale
SoftBank Group plans to issue ¥1 trillion in yen-denominated retail bonds in Japan. The planned sale would be the largest retail corporate bond offering by a Japanese company. The seven-year bonds carry an indicative coupon range of 4.3% to 4.9%.
The company expects to price the bonds on September 4. Meanwhile, the retail offering is scheduled to run from September 7 to September 16. SoftBank plans to issue the bonds on September 17, with maturity set for September 16, 2033.
The fundraising comes as SoftBank expands its investments in artificial intelligence. In particular, the group is increasing its financial commitments to OpenAI and related AI infrastructure.
Record Bond Sale Targets Retail Investors
SoftBank’s proposed issue will exceed its previous retail bond record of ¥600 billion. That earlier record was set in 2025. Moreover, the new transaction would match the ¥1 trillion record set by NTT Finance for institutional debt, although SoftBank’s issue targets individual investors.
The bonds are expected to be marketed under SoftBank’s Fukuoka SoftBank HAWKS Bond programme. The company has frequently used Japan’s retail debt market to raise funds. Therefore, the latest transaction extends an established financing strategy while substantially increasing its scale.
According to SoftBank’s filing, the bonds will have a ¥1 million denomination. They will pay interest twice a year and mature in September 2033. The final coupon and other terms will be determined on September 4.
The indicative 4.3% to 4.9% coupon range also reflects the changing Japanese interest-rate environment. For retail investors, that yield offers a significant premium to traditional bank deposits. However, investors also assume SoftBank’s corporate credit risk.
Masahiro Ichikawa, chief market strategist at Sumitomo Mitsui DS Asset Management, said, “With the market pricing the Bank of Japan’s terminal rate at just under 2%, this level seems reasonably appealing” for mom-and-pop investors.
AI Investment Drives Funding Requirements
SoftBank is raising capital as its AI strategy becomes increasingly ambitious. The group has emerged as one of OpenAI’s largest financial backers, with cumulative investments and commitments expected to exceed $60 billion.
The company is also investing in infrastructure needed to support AI growth. Its strategy includes data centres and other computing capacity, while its portfolio continues to include major technology assets such as Arm.
Furthermore, SoftBank has used several financing routes to support its AI ambitions. These include bond issuance, borrowings and asset disposals. The group has also sold its entire Nvidia stake and expanded financing secured against its Arm holdings.
The latest bond sale therefore provides additional funding capacity while helping SoftBank manage existing obligations. The company has said proceeds will be used for AI-related investments and to repay previously issued bonds.
SoftBank’s existing debt schedule helps explain the refinancing component. Its published bond data shows several sizeable domestic bonds approaching maturity, including a ¥97.9 billion issue due in September 2026 and a ¥400 billion Fukuoka SoftBank HAWKS Bond due later that month.
Consequently, the new issuance serves two purposes. It supports SoftBank’s expansion into AI while also providing funds to manage its debt profile.
Retail Debt Becomes Part of AI Financing
The transaction highlights how Japan’s retail bond market is becoming an important funding channel for technology investment. SoftBank has repeatedly tapped individual investors, particularly as it pursues capital-intensive technology strategies.
At the same time, the scale of the proposed issue raises questions about investor appetite and borrowing costs. A coupon approaching 5% could attract strong retail demand, although higher interest costs would increase the expense of SoftBank’s debt financing.
Credit risk remains another consideration. Japanese credit agencies give SoftBank relatively stronger ratings, while major international agencies maintain speculative-grade assessments because of its leverage and exposure to volatile technology assets.
SoftBank’s shares also fell on Monday as technology stocks weakened. The decline reflects wider investor concerns around AI valuations and the financing requirements of companies making large technology investments.
Nevertheless, the planned ¥1 trillion transaction demonstrates the scale of SoftBank’s current capital requirements. More importantly, it shows how the financing of AI infrastructure is moving beyond traditional technology funding and into large-scale corporate debt markets.
As SoftBank prepares to finalise the bond terms on September 4, investors will watch the coupon, demand and allocation closely. Those details will provide a clearer indication of how Japan’s retail market is responding to SoftBank’s increasingly aggressive AI investment strategy.
