SoftBank reportedly seeks $40 billion bridge loan to underwrite massive OpenAI bet

SoftBank Group is reportedly lining up as much as $40 billion in short-term dollar borrowing to fund its outsized investment in OpenAI — a move that, if completed, would be the largest pure‑dollar loan in the company’s history and a stark statement of founder Masayoshi Son’s ambition to make SoftBank a central hub of the global AI boom. It has been reported that the loan would be a roughly 12‑month bridge facility, with JPMorgan among four banks expected to underwrite the package; talks are ongoing and terms may change.

Deal details remain fluid. Reports say SoftBank holds roughly an 11% stake in OpenAI and has already injected more than $30 billion into the startup; the new borrowing would primarily shore up that position. SoftBank has reportedly financed its AI expansion with a mix of asset sales (including stakes in Nvidia) and margin loans secured against Arm and other holdings, and it has been reported that the group has funded over $70 billion of AI investments via debt and disposals since 2025.

Credit markets are watching nervously. S&P this week lowered SoftBank’s credit outlook, citing risks that heavy OpenAI commitments could strain liquidity and asset-quality metrics. Bloomberg analysts have warned that high loan‑to‑value ratios and macro uncertainty — plus lingering concerns about an AI valuation bubble and delays to any OpenAI IPO — could widen SoftBank’s credit spreads and keep bond volatility elevated.

What does this mean beyond SoftBank’s balance sheet? For Western readers: the story is part corporate finance, part geopolitical signal. A Japanese conglomerate taking on record dollar debt to deepen ties with a U.S. AI champion speaks to how the global AI race is reshaping cross‑border capital flows and strategic exposure. Borrowing to invest — is this bold conviction, or dangerous overreach? Markets and creditors will soon decide.