SoftBank says it has completed a $22.5B investment in OpenAI, finalizing its up to $40B investment commitment announced in March and taking its stake to ~11%

SoftBank Group Corp. ("SBG" or the “Company") today announced that it has completed an additional investment of $22.5 billion …

SoftBank Group Corp. 2025-12-31

Context & Ripple Effects

SoftBank’s OpenAI exposure had grown from a $500M Vision Fund commitment to talks over a far larger investment alongside its Stargate commitment. By February, the proposed $40B investment was tied to a $260B pre-money valuation in the reported financing plan.

This completion turns that earlier financing plan into a material ownership position, making SoftBank’s financial results and capital-allocation choices more closely tied to OpenAI’s value.

First-order effects

OpenAI receives the completed capital infusion, while SoftBank lifts its stake to roughly 11% and becomes more exposed to changes in OpenAI’s valuation.
SoftBank’s move establishes a concrete base for the subsequent reported talks about additional OpenAI funding, rather than leaving its commitment at the proposal stage.

Second-order effects

A larger SoftBank ownership position concentrates a major AI financing relationship around OpenAI, raising the importance of SoftBank’s ability to fund follow-on commitments.
The investment puts greater pressure on other large AI investors and infrastructure financiers to decide whether to match OpenAI-scale funding rounds or back competing platforms and model providers.

Third-order effects

The deal is an example of AI development being financed through increasingly concentrated, balance-sheet-heavy commitments rather than conventional venture rounds alone.
If follow-on investments require outside financing—as later reporting on bank participation in SoftBank’s loan backing suggests—AI competition will become more dependent on credit availability as well as model performance.

The trend: Frontier AI funding is shifting toward large, concentrated capital commitments that link model-company valuations to investor balance sheets and increasingly to structured financing.

Discussion

@the_ai_investor @the_ai_investor on x
This looks like a great investment for Masa. He might not have to cry again about selling his NVDA shares too early. SoftBank has fulfilled its $40B commitment to OpenAI, per CNBC sources. It transferred $22-22.5B last week, after prior $8B direct and $10B syndicated
@stocksavvyshay Shay Boloor on x
@PolymarketMoney Sam might be the most expensive poison pill in tech history 😅
@londonrealtv @londonrealtv on x
SoftBank fully funds a $40 billion investment in OpenAI, per CNBC. They are burning cash like crazy. Often in tech timing matters more than potential.
@kantineastt Lord Immy Kant on x
The entire US economy right now is 7 companies sending a billion fake dollars back and forth to each other [image]
@geoffreywoo Geoffrey Woo on x
SoftBank will make so much money when OpenAI goes public. Masa struck an awesome deal to have a delayed draw to fund.
@unusual_whales @unusual_whales on x
Softbank says it has completed an additional $22.5 billion investment in OpenAI, raising its aggregate ownership interest to about 11%
@amitisinvesting Amit on x
softbank officially completes their OpenAI $40B investment today cool, so can OpenAI now pay some of their bills with this new money so we can santa rally please
@altryne Alex Volkov on x
🔥 more inference and GPUs for all of us!
@andrewcurran_ Andrew Curran on x
SoftBank sent the final $22 billion last week, completing their $40 billion commitment, their stake in OpenAI is now over 10%. [image]
@notthatadamlevine Adam Levine on bluesky
Microsoft still number one outside shareholder. [embedded post]
r/humanfuture r on reddit
SoftBank has fully funded OpenAI commitment of $40 billion, according to sources
r/OpenAI r on reddit
Softbank has fully funded $40 billion investment in OpenAI, sources tell CNBC
r/BetterOffline r on reddit
“SoftBank has fully funded $40 billion investment in OpenAI, sources tell CNBC”
r/singularity r on reddit
Softbank has fully funded $40 billion investment in OpenAI, sources tell CNBC
r/technology r on reddit
Softbank has fully funded $40 billion investment in OpenAI

Chronicles