TOKYO — SoftBank Group plans to issue about 1 trillion yen, or roughly $6.3 billion, in retail bonds in the Japanese market, a sale that would be the largest in the company’s history, Bloomberg reported Monday. The proceeds are earmarked for the conglomerate’s artificial-intelligence investments, the latest chapter in Masayoshi Son’s bet that AI will be the defining technology of the century.
The bond sale marks a shift in how SoftBank funds itself. The company has historically financed its investments through a combination of bank loans, asset sales and its own stake in Alibaba, selling shares in the Chinese e-commerce giant when it needed cash. That avenue has narrowed, and bank financing has become harder to arrange on favorable terms. Retail bonds offer an alternative: Japanese households hold enormous savings, and the country’s bond market has a deep base of individual investors who have grown accustomed to buying debt from well-known companies.
The scale of the sale is notable even by SoftBank’s standards. A 1 trillion yen retail issue would surpass the company’s previous records and would rank among the largest retail bond sales ever conducted in Japan. SoftBank has spent the past two years consolidating its position in AI, leading the Stargate data-center venture with OpenAI and investing billions in OpenAI itself, alongside a portfolio of AI startups assembled through the Vision Fund. The company’s balance sheet has absorbed those investments, but Son has made clear he intends to keep buying.
For Japanese retail investors, the appeal is straightforward. SoftBank bonds have historically offered yields above government debt, and the company’s brand remains familiar to households that remember its role in bringing mobile phones and technology to the mass market. The risk, equally straightforward, is that SoftBank’s fortunes are now tied to the AI cycle, and that cycle is volatile. The company’s share price has swung with the fortunes of its portfolio, and its earnings have been shaped more by the value of its stakes than by operating income.
The sale also shifts risk in a direction regulators are watching. SoftBank’s earlier funding came largely from institutional sources — banks, asset managers and sovereign funds — that could absorb losses and that negotiated directly with the company. Retail bonds distribute that risk across hundreds of thousands of individual investors, many of them retirees. Japanese financial regulators have become more attentive to retail exposure to technology investments, and the terms of the sale — coupon, maturity and how aggressively SoftBank markets the bonds — will be read as a signal of how confident the company is in its own story.
Analysts in Tokyo said the timing reflects both opportunity and necessity. The Bank of Japan has been normalizing monetary policy, and rising rates have made bonds more attractive relative to savings accounts, giving issuers a window of strong demand. At the same time, SoftBank faces a schedule of commitments to its AI ventures that its cash flow alone cannot cover. A retail bond sale at this scale buys the company years of funding certainty, provided the buyers keep coming.
Son’s pitch to the Japanese public has been consistent: AI is the future, SoftBank is positioned at the center of it, and investors who participate will share in the gains. The retail bond sale extends that pitch to the household balance sheet. If the AI bet pays off, the bonds will have been a bargain; if it stumbles, the risk that once sat with institutions will sit, in part, with the people who bought them on the strength of a name and a promise.
SoftBank’s recent history gives investors reason to read the sale carefully. The company’s Vision Fund, once the largest technology investment vehicle in the world, suffered historic losses when its bets on companies like WeWork and Uber soured, and SoftBank was forced into a defensive posture that included selling stakes in Alibaba and its own stake in T-Mobile. Son rebuilt the narrative around AI, and the Stargate venture with OpenAI restored the company’s standing as a marquee investor. But the balance sheet remains complex, with debt at both the group and the portfolio level, and the retail bond sale adds a new layer of obligations with a fixed repayment schedule.
The Japanese retail bond market has been receptive to large issues from technology-linked companies, and SoftBank’s brand recognition gives it an advantage over less familiar issuers. The company has also cultivated a loyal following among Japanese individual investors, who have bought its shares through the years and who have become accustomed to Son’s ambitious pronouncements. The bond sale taps that loyalty at a moment when Japan’s household savings, long parked in bank deposits, are being coaxed into markets by government policy and by the Bank of Japan’s rate increases.
Regulators will be watching the terms. Japan’s Financial Services Agency has been pressing issuers to market retail bonds transparently, and the agency has shown itself willing to scrutinize products that promise returns without commensurate risk disclosure. SoftBank’s previous retail offerings have complied, and the company has said it will follow the same discipline. The larger question is systemic: as Japanese households move savings into corporate bonds, the risk of the country’s technology investments is quietly moving from institutions that can absorb losses to individuals who cannot. The SoftBank sale is the largest single illustration of that shift, and it will be studied accordingly.
