How much has SoftBank Group invested in OpenAI in total?

SoftBank Group's cumulative investment in OpenAI has reached $64.6 billion, after completing the $30 billion additional investment program.

How was the final $10 billion tranche funded?

It was funded with proceeds from the issuance of foreign-currency senior notes. The bridge facility contract has also been fully repaid.

What happened to the remaining borrowing line under the bridge facility?

The remaining $10 billion borrowing line under the $40 billion bridge facility contract was cancelled as of September 30, 2026.

Top Companies' AI MovesAI Business & IndustryTop Companies AI11m agoOct 15, 2026, 06:30 JST

SoftBank Group completes $10 billion OpenAI tranche, stake hits roughly 13%

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3 Key Points

What happened
SoftBank Group executed a $10 billion (1,579.6 billion yen) additional investment in OpenAI Group PBC through SoftBank Vision Fund 2, the final payment of the $30 billion additional investment announced in February 2026.
Why it matters
The cumulative investment now stands at $64.6 billion, giving SoftBank an ownership stake of roughly 13%. The tranche was funded by proceeds from foreign-currency senior notes, and the bridge facility contract has been fully repaid.

WHO IT HITSSoftBank Group's balance sheet and its investors now carry a larger concentrated bet on OpenAI, funded with debt rather than cash on hand. The full repayment of the bridge facility suggests the company has closed out this financing structure for now.

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Context & Analysis

SoftBank Group's stake-building in OpenAI has unfolded in stages. The February 2026 announcement set up a $30 billion additional investment split into tranches, and this third and final tranche of $10 billion closes that commitment. The $64.6 billion cumulative figure and the roughly 13% ownership stake show how large the position has grown — large enough that SoftBank's exposure to OpenAI is now a defining feature of its investment portfolio.

Just as notable is how the final tranche was paid for. SoftBank used proceeds from foreign-currency senior notes rather than cash reserves, then unwound the remaining $10 billion line under a $40 billion bridge facility contract and repaid that facility in full. The bridge facility was announced alongside an early repayment disclosed on September 9, and the cancellation of the unused line on September 30 marks the end of that particular borrowing arrangement.

FAQ

How much has SoftBank Group invested in OpenAI in total?: SoftBank Group's cumulative investment in OpenAI has reached $64.6 billion, after completing the $30 billion additional investment program.
How was the final $10 billion tranche funded?: It was funded with proceeds from the issuance of foreign-currency senior notes. The bridge facility contract has also been fully repaid.
What happened to the remaining borrowing line under the bridge facility?: The remaining $10 billion borrowing line under the $40 billion bridge facility contract was cancelled as of September 30, 2026.

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