# SoftBank Closes Third $10B OpenAI Tranche Using Senior Notes Proceeds

According to a SoftBank announcement, on 2026/10/1, SoftBank Group completed its third and final USD 10 billion additional investment in OpenAI, completing the previously announced USD 30 billion additional investment. Following this round, SoftBank's cumulative OpenAI investment reached USD 64.6 billion, with ownership of approximately 13%.



Canonical: https://uniquebase.ai/news/78b7ee66-fc08-4784-8e23-049f71fcf80c
Stable identifier: 78b7ee66-fc08-4784-8e23-049f71fcf80c
Snapshot captured: 2026-10-20T18:19:32.670Z
English updated: 2026-10-20T18:21:37.535Z

## Connected profiles

- [OpenAI](/companies/openai)
- [Ruanyinyuanjing Fund Phase Two](/institutions/ruanyinyuanjing-fund-phase-two)

## Sources

- https://group.softbank/en/news/press/20261001