SoftBank Group said it executed the final US$10 billion tranche of its planned follow-on investment in OpenAI on October 1 through SoftBank Vision Fund 2.

The Japanese technology investment company said the move completes the US$30 billion follow-on investment announced in February.

SoftBank’s cumulative investment in OpenAI now stands at US$64.6 billion, and its ownership interest is about 13%.

SoftBank said it funded the latest tranche with proceeds from foreign currency-denominated senior notes announced in September.

It also canceled the remaining US$10 billion of undrawn capacity under a bridge facility.

Following that cancellation and an earlier repayment, the company said no borrowings or undrawn commitments remain under the facility.

The investment adds to a broader relationship between SoftBank and OpenAI that has also included expanding Stargate AI infrastructure and supporting an SB Energy partnership.

Around the time of SoftBank’s follow-on commitment, OpenAI was reportedly raising a US$110 billion funding round.

🔗 Source: SoftBank

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