SoftBank's $40 Billion Reckoning: Inside the AI Empire's Debt-Fueled Expansion as Shares Swing Wildly
05.06.2026 - 17:58:13 | boerse-global.de
SoftBank is deploying an extraordinary financing blitz to fund Masayoshi Son's artificial intelligence ambitions, even as its stock price comes under intense pressure. The Japanese conglomerate has just placed a new hybrid bond worth 260 billion yen (about €1.9 billion) with a fixed coupon of 5.12% until June 2031, after which the rate turns variable. The instrument matures in June 2061. Japan Credit Rating Agency assigned the issuance a BBB+ grade, while SoftBank's long-term issuer rating stays at "A" but with a negative outlook — a warning that rating agencies are watching the rising debt load closely.
The bond is only one piece of a far more precarious financing puzzle. SoftBank secured a $40 billion bridge loan that comes due in March 2027, using its stake in OpenAI as collateral. That stake — roughly 13% of the ChatGPT developer — is worth an estimated $64.6 billion, but OpenAI remains unlisted and trades at more than 35 times revenue, a valuation that credit analysts say would be hard to defend in a downturn. S&P Global recently cut its credit outlook on SoftBank to "Negative", citing surging debt and a portfolio overly concentrated in volatile AI assets. Total group borrowings stood at 16.3 trillion yen (around $104 billion) at the end of 2025.
Some of that capital is already being allocated to massive infrastructure. In France, SoftBank plans to build AI data centers with a combined capacity of 5 gigawatts and a budget of up to €75 billion. The first phase targets 3.1 gigawatts in the Hauts-de-France region by 2031. Meanwhile, the company's fintech arm, PayPay, agreed to buy a 70.2% majority stake in T&D Financial Life Insurance for roughly €900 million, aiming to sell insurance products to its base of more than 74 million registered users. The deal is expected to close in October 2027.
Should investors sell immediately? Or is it worth buying SoftBank?
The stock itself is on a rollercoaster. On the day the hybrid bond was placed, shares fell nearly 6% to €38.24 in German trading, following a prior session that saw an 11% plunge on a broad tech rout that also hit Nvidia, TSMC and Foxconn. Despite the sharp setbacks, the 30-day performance remains positive — up 13.8% or nearly 21% depending on the measuring point — driven by a powerful rally that turned SoftBank into Japan's most valuable company, overtaking Toyota. The annualized volatility over the past 30 days has soared past 110%, underscoring how tightly the stock is tied to Son's investment cycle. The RSI currently sits at 57.3, suggesting the shares are no longer overbought after the correction.
SoftBank's core cushion against its debt pile remains its majority stake in Arm Holdings, valued at around $165 billion. But the cost of new yen-denominated debt is rising — the 5.12% coupon on the latest hybrid bond is the highest SoftBank has paid on a yen bond in years, reflecting the market's demand for a premium as 10-year Japanese government bond yields have climbed above 2.5%. Analysts at TD Cowen maintain a "Hold" rating on the stock, a stance that encapsulates the tension between Son's long-run AI thesis and the very real near-term refinancing risks.
All eyes are now on whether SoftBank can refinance that $40 billion bridge loan before March 2027 without a market revolt. Masayoshi Son, who has called the AI revolution "50 times bigger than the dot-com era," is pressing ahead with the "Stargate" AI infrastructure project, which could command a budget of up to $500 billion. The next quarterly report will offer the first hard look at whether the returns from that bet are starting to outweigh the interest costs piling up on the balance sheet.
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