Larry Ellison has surged past Elon Musk to become the world’s richest person.

That happened after Oracle’s shares skyrocketed on the back of massive AI infrastructure deals.

Oracle’s stock jumped around 40% in a single session, delivering Ellison a US$100 billion (A$152 billion) gain to his personal fortune.

It’s the largest one-day wealth increase in history. Ellison’s net worth now stands at approximately US$392–395 billion (around $600 billion), surpassing Musk’s US$384 billion ($584 billion), according to the Bloomberg Billionaires Index.

Ellison, 81, co-founded Oracle and remains its chairman, holding about 1.16 billion shares.

That stake recently earned him more in one day than any individual has ever pocketed.

The share price surge followed an earnings call forecasting that Oracle’s AI cloud business could ultimately generate over half a trillion US dollars in future revenue.

No less than US$455 billion (A$692 billion) already locked in via contracts and the company is projecting that figure will soon surpass US$500 billion.

Oracle might not be as sexy as some other tech companies, but it’s certainly impressively profitable

CEO Safra Catz told investors Oracle had recently secured four multibillion-dollar cloud agreements with “the who’s who of AI”, including OpenAI, xAI, and Meta.

The biggest is with OpenAI, which has agreed to buy US$300 billion ($456 billion) worth of computing power over five years, according to the Wall Street Journal.

As a result, Oracle’s Remaining Performance Obligations – essentially, the future revenue it expects – surged 359% to US$455 billion ($692 billion).

So far in 2025, Ellison has added about US$200 billion ($304 billion) to his fortune, while Musk has lost roughly US$40 billion ($61 billion).

Oracle’s rise solidifies Ellison’s transformation from a database pioneer to an AI infrastructure kingpin.