SoftBank Corp stock gains on AI debt funding

SoftBank Corp stock (ISIN JP3732000009) traded at JPY 6,315 on September 21, 2026, up 1.09 percent from the prior close of JPY 6,247. Reuters said on September 21, 2026, that SoftBank Group launched $10 billion and EUR 1 billion in notes to fund its OpenAI investment.

Debt sale sets the tone

According to Reuters, the dollar notes are split into 3.5-year, 5.5-year and 7.5-year maturities, while the euro bonds carry 4-year and 6-year terms. The same report said the notes are expected to price on September 24 and settle on September 29, and that Fitch assigned the proposed debt a BB+ rating.

That matters for the stock because Reuters also reported that SoftBank expects the bond proceeds to fund a $10 billion payment for the third tranche of its OpenAI investment, which is scheduled to close on October 1. The planned deal size would make it the largest Asia Pacific and Japan non-financial corporate bond deal on record, according to the Reuters report.

Revenue and debt burden

Reuters' SoftBank Group market page showed revenue of JPY 7,798,650 million for fiscal 2026, up from JPY 7,243,752 million in fiscal 2025, while net income rose to JPY 5,002,271 million from JPY 1,153,332 million. The same page listed total debt of JPY 25,663,566 million and total liabilities of JPY 43,127,724 million for fiscal 2026.

The balance-sheet profile underlines why the new financing is being watched closely. Reuters' page also showed operating cash flow of minus JPY 428,832 million in fiscal 2026 after positive cash flow of JPY 236,591 million a year earlier.

Stock level on September 21

SoftBank Corp stock changed hands at JPY 6,315 on September 21, 2026, with volume of 90,291,700 shares, a market value of JPY 36,070,320 million and a 52-week context that Reuters' market page placed alongside the day's delayed quote. The stock was 1.09 percent higher on the session, with a prior close of JPY 6,247.

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