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SoftBank
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OpenAI

Deal Value

Undisclosed

Announced

Wednesday, December 31, 2025

Deal Details

SoftBank and co-investors fully fund a $41 billion round in OpenAI, giving SoftBank roughly an 11% stake in the company.

A financial investment providing capital in exchange for equity or strategic partnership.

Related News

SoftBank completes $41bn OpenAI investment, lifts stake to 11%

SoftBank Group announced on December 31, 2025 that it has completed an additional $22.5 billion investment in OpenAI, bringing its total commitment to $41 billion. The deal raises SoftBank’s aggregate ownership in OpenAI to about 11%, with the rest of the round filled by $11 billion from third‑party co‑investors.([group.softbank](https://group.softbank/en/news/press/20251231?utm_source=openai))

Dec 31, 2025

Related Analysis

Market Play

SoftBank Is Paying for OpenAI Equity With $11.1 Billion of Junk Bonds. The IPO Just Moved to 2027.

The largest private AI position is now financed with high-yield paper that matures whether or not the listing happens. Here is who carries the risk, layer by layer, and the one date this week that puts a price on it.

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