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Larry Ellison is chairman, chief technology officer and cofounder of software giant Oracle, of which he owns roughly 40%.

Ellison gave up the Oracle CEO role in 2014 after 37 years at the helm.

In September 2025, he became the second person ever worth more than $400 billion, thanks to an AI-driven boom in Oracle's stock price.

In 2012, he bought nearly all of the Hawaii island of Lanai for $300 million.

Ellison sat on Tesla's board from 2018 to 2022. He owned 45 million split-adjusted shares before stepping down as a director.

Ellison also owns nearly 50% of media giant Paramount Skydance, which formed after the nearly $28 billion (enterprise value) merger of Paramount and his son David's Skydance in August 2025.