Roughly $230 billion, overwhelmingly Oracle stock. The 80-something co-founder riding the cloud and AI infrastructure boom.
Net worth approx. · as of October 2026Ellison co-founded Oracle in 1977 and still owns a enormous stake — roughly two-fifths of the company. Oracle's late pivot to cloud infrastructure, supercharged by AI data-center demand, repriced the company dramatically in the 2020s. At 80+, Ellison is the oldest contender on this list, and his wealth is the most concentrated: essentially one company.
At ~$230 billion, Ellison needs roughly a 4.3× gain. That means Oracle's cloud and AI infrastructure run continuing for years — the company's data-center buildout converting into durable, high-margin revenue. Single-stock concentration cuts both ways: it got him here faster than diversified wealth ever could, and it makes the path to twelve zeros a bet on one company's execution.
Wealth compounds with time, and Ellison has had more of it than anyone else on this list — nearly five decades of Oracle compounding. It's a live demonstration of the principle: the biggest fortunes belong to founders who never sold.
Oracle shares reprice every trading day on cloud-growth expectations. A slowdown in enterprise AI spending would compress the multiple long before it touched the underlying business — and Ellison's net worth with it.