Ellison was born in New York City and raised in a working-class household on the South Side of Chicago by his aunt and uncle after being given up for adoption by his birth mother as an infant. He attended the University of Illinois and later the University of Chicago but did not complete a degree at either institution, instead moving to California in the late 1960s, where he worked a series of programming jobs, including at Amdahl Corporation and Ampex, before starting his own software company.

In 1977, Ellison co-founded Software Development Laboratories with colleagues Bob Miner and Ed Oates, inspired by an IBM research paper describing a relational database model using SQL. The company, later renamed Oracle, built one of the first commercially available relational database systems, and its early contract work for the CIA gave it credibility that helped it grow rapidly through the 1980s. Oracle went public in 1986, and Ellison’s stake in the fast-growing company began building the fortune that would eventually make him one of the world’s wealthiest people.

Photo: Oracle PR from Redwood Shores, Calif., USA via Wikimedia Commons (CC BY 2.0)

Ellison served as Oracle’s chief executive officer for nearly four decades, from the company’s founding until 2014, steering it through the rise of enterprise software, the shift to cloud-based services, and a series of major acquisitions including PeopleSoft, Siebel Systems, Sun Microsystems, and NetSuite. In 2014 he stepped down as CEO to become Executive Chairman and Chief Technology Officer, remaining deeply involved in Oracle’s strategic direction. Under his continued leadership, Oracle has expanded aggressively into cloud infrastructure and, more recently, AI computing capacity, striking major cloud-computing supply agreements that have driven the company’s stock — and Ellison’s fortune — sharply higher through 2025 and into 2026.

Ellison’s wealth is overwhelmingly tied to his large personal shareholding in Oracle rather than an annual salary; Bloomberg and Forbes billionaire trackers attribute the vast majority of his year-to-year net worth changes to swings in Oracle’s stock price. His formal executive compensation from Oracle in cash and equity awards has also regularly placed him among the highest-paid corporate executives in the United States in years the company’s board approved new stock award packages.

As Oracle’s largest individual shareholder, with a stake regularly reported in the range of 35-40% of the company, Ellison’s board-approved compensation packages have periodically included very large equity award grants, which corporate-governance watchdogs have flagged as among the largest in American corporate history. These awards, combined with the sheer scale of his existing holdings, mean that Oracle’s share price is the single biggest driver of his reported net worth from year to year.

Ellison does not participate in celebrity-style endorsement deals; his commercial visibility comes instead through his role as Oracle’s public face at major technology conferences and product launches, and through his prominent ownership of the BNP Paribas Open tennis tournament and facilities at Indian Wells, California, which he purchased in 2009 for a reported price above $100 million.

Beyond his core Oracle holdings, Ellison owns approximately 98% of the Hawaiian island of Lanai, acquired in 2012 for a reported $300 million, where he has invested heavily in hospitality, agriculture, and renewable energy projects through his company Pulama Lanai. He served on Tesla’s board of directors from 2018 to 2022 and has been a significant shareholder in the electric vehicle maker. He also funds medical research through the Lawrence Ellison Institute for Transformative Medicine and previously through the Ellison Medical Foundation.

Photo: Oracle PR via Wikimedia Commons (CC BY 2.0)

Ellison owns an extensive Japanese-style estate in Woodside, California, along with additional properties in Malibu, Rancho Mirage, and Newport Beach. His nearly complete ownership of Lanai represents his single largest real estate holding by land area. He is also known for his interest in sailing, having funded and skippered Oracle Team USA to America’s Cup victories in 2010 and 2013, and has owned large yachts over the years, including the superyacht Musashi.