Companies · 2 holders Net worths as of Sep 24, 2026
Billionaires Digest
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Who owns OpenAI?

2 of the world’s richest people hold OpenAI in our tracked profiles.

Billionaire holders

  1. Masayoshi Son#29 · $72.6B
    StakeOpenAI Group PBC (via SoftBank Vision Fund 2) · ~13% expected after $30B follow-on (cumulative $64.6B); tranches Apr 1 and Jul… · as of Feb 2026
    More
    Entry
    OpenAI Group PBC (via SoftBank Vision Fund 2)
    Stake
    ~13% expected after $30B follow-on (cumulative $64.6B); tranches Apr 1 and Jul 1 2026 executed, third $10B tranche due Oct 1 2026
    Stake as of
    2026-02-27
    source ↗
  2. Greg Brockman#97 · $25.5B
    Co-founder and Presidentstake worth nearly $30B per his court testimony; Bloomberg estimates ~2.5-3% · as of May 2026
    source ↗

Each row is a sourced entry from that person’s profile. Stakes are as of the date shown, not today.

Recent SEC filings

OpenAI has no US ticker in our data, so there are no Form 4 insider trades to show.

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Recent moves

Sep 26, 2026 edition
Masayoshi SonInvestmentAI & tech9984.TAI read · ▲ Leveraged bet

SoftBank prices record $11.1B bond for OpenAI stake

The move

SoftBank priced $11.1 billion in dollar- and euro-denominated bonds on September 24, the largest high-yield corporate bond sale on record, with yields as high as 9.75%. The money funds a roughly $10 billion installment toward SoftBank's approximately $64.6 billion investment in OpenAI, which is due to close October 1.

Why it matters

It shows how much debt Son is willing to take on to fund SoftBank's AI bets, and investors are still lining up: SoftBank shares jumped more than 7% on the news when Japanese markets reopened.

The bear case

Paying up to 9.75% shows lenders are charging a steep premium given SoftBank's growing debt load and OpenAI's still-distant IPO.

What to watch

The bond's settlement on September 29 and the OpenAI investment closing October 1.

Source · American BazaarRead original ↗Report an error

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