x.com/ElaraJordan/status/2039769643443757522
1 correction found
SoftBank investment in OpenAI: ~$64.6B (11.75%)
This mixes a future planned investment total with the wrong ownership figure. SoftBank said $64.6B was the expected cumulative total only after later 2026 closings, and that amount would be about 13% ownership, not 11.75%.
Full reasoning
SoftBank’s own disclosures contradict this as a current cap-table figure.
- On February 27, 2026, SoftBank announced a planned $30.0B follow-on investment and said that upon completion its cumulative investment in OpenAI would total $64.6B, representing approximately 13% ownership.
- The same release says that $30.0B follow-on would close in three tranches: April 1, 2026, July 1, 2026, and October 1, 2026.
- On April 1, 2026, SoftBank then announced that it had executed only the first tranche of $10.0B, with the second and third tranches still planned for July and October 2026.
- Before that new round, SoftBank said on December 31, 2025 that after completing its earlier commitment, its aggregate ownership interest in OpenAI was approximately 11%.
So as of the post date (April 2, 2026), SoftBank had not already invested $64.6B. The completed amount implied by SoftBank’s disclosures was $44.6B ($34.6B previously invested + the newly executed $10.0B first tranche), while the $64.6B figure referred to a future cumulative total after later 2026 closings. And the ownership figure SoftBank tied to that $64.6B total was about 13%, not 11.75%.
3 sources
- Follow-on Investments in OpenAI | SoftBank Group Corp.
Upon completion of the Follow-on Investment, SBG's cumulative investment in OpenAI is expected to total USD 64.6 billion, representing an ownership interest of approximately 13%.
- Execution of Follow-on Investment (First Tranche) in OpenAI | SoftBank Group Corp.
On April 1, 2026, it executed the follow-on investment (first tranche) of USD 10.0 billion ... SBG plans to complete the second and third tranches ... on July 1, 2026 ... and October 1, 2026.
- Completion of Additional $22.5 Billion Investment in OpenAI | SoftBank Group Corp.
The Company's aggregate ownership interest in OpenAI is now approximately 11%.