September 11, 2025 (Compiled report) Oracle co‑founder Larry Ellison saw his wealth surge by about $101 billion in a single day on September 10, overtaking Elon Musk to become the world's richest person. The dramatic reversal followed Oracle's strong quarterly results, underscoring the booming demand for artificial intelligence (AI) cloud services. According to the Bloomberg Billionaires Index and Forbes real‑time billionaire rankings, as of 10 a.m. ET on September 10 Ellison's net worth stood at $393 billion, compared with Musk's $385 billion. Based on September 10's closing price, Oracle's market capitalization was $923 billion; Ellison's roughly 42% stake was worth about $38.06 billion (sic: please retain original numeric context) approximately $3,806 billion? [Note: preserved original figures], and with his other assets (such as real estate and private investments) his total wealth was verified at $393 billion. The event not only reshuffled the global rich list but also highlighted AI's role in driving tech giants' valuations.
Ellison's one‑day gain stemmed directly from Oracle's fiscal 2025 first‑quarter results announced on September 10. The company reported total revenue of $14.2 billion, up 8% year‑over‑year and beating Wall Street expectations. AI‑driven cloud infrastructure services revenue surged 50% to $8.5 billion, accounting for 60% of total revenue. Oracle said it holds over $450 billion in forward contracts, including roughly $300 billion in a single contract with OpenAI. After the earnings release, Oracle shares spiked intraday to $345.72, briefly lifting market value to $950 billion, before settling at a close of $328.33 and a market cap of $923 billion. The prior close on September 9 was $241.51, representing an intraday gain of about 36%, the largest single‑day increase in the company's history. Ellison owns about 42% of Oracle (approximately 1.16 billion shares); at the close his stake rose in value from roughly $280 billion the previous day to about $380.6 billion. Taking into account Ellison's other holdings (such as NetSuite equity and private investments), Bloomberg and Forbes verified his total wealth rose from $292 billion to $393 billion, an increase of $101 billion. CNBC noted the gain was equivalent to the market value of a mid‑sized tech company, calling it a Silicon Valley "wealth miracle."
As Oracle's founder, the 81‑year‑old Ellison is a Silicon Valley legend. He founded the company in 1977, driving a revolution in database technology that turned Oracle into a global enterprise software powerhouse. In recent years Ellison has shifted focus to AI and cloud computing, partnering with companies such as NVIDIA to develop AI infrastructure. Oracle said its Gen2 AI services have attracted thousands of enterprise customers, including Microsoft and Amazon, helping cloud revenue jump from $5 billion last year to $8.5 billion. Ellison remains the company's chief technology officer (CTO), and his strategic vision is seen as a key factor. Business Insider reported Ellison anticipated the AI cloud market's boom as early as 2023 and invested billions to upgrade data centers. By the close, Ellison's Oracle holdings accounted for the vast majority of his net worth (about 98.6%), with other assets (real estate, yachts, etc.) making up roughly 1.4%, totaling $393 billion.
The event ended Musk's nearly year‑long run as the world's richest person. Since November 2024 Musk had held the top spot on the back of Tesla and SpaceX valuation gains, with his wealth at times topping $400 billion. On September 10, modest moves in Tesla's share price reduced Musk's net worth by about $5 billion. CNN Business noted the AI boom is reshaping the billionaire rankings: Ellison's rise reflects steady growth in cloud computing, while Musk's wealth remains more tied to the volatility of electric‑vehicle and aerospace markets. Bloomberg data show global billionaire wealth rose by roughly $2 trillion over the past year, but tech stock volatility has produced frequent ranking changes. Ellison had previously ranked third, behind Musk and Jeff Bezos; this move makes him one of the first to reach the top through enterprise software‑driven AI gains.
Ellison's accumulation of wealth was not overnight. Oracle transformed from a database company into an AI cloud leader. Partnerships with OpenAI and Anthropic have positioned Oracle as a preferred AI training platform. Axios reported that the September 10 share surge was driven not only by the earnings beat but also by public endorsement from NVIDIA CEO Jensen Huang, who said Oracle was "a step ahead on AI infrastructure." Ellison's personal portfolio also contributed, including acquisitions such as NetSuite and Cerner, plus large expenditures in real estate and yachts. His philanthropy has been notable as well: in 2024 he donated $1 billion to cancer research, promoting AI applications in healthcare.
Markets reacted enthusiastically. On September 10 Oracle shares rose from an open of $319.19 to close at $328.33, with an intraday high of $345.72 and a peak market capitalization near $950 billion. The Nasdaq rose about 1.2% as tech stocks broadly benefited. Investopedia analysts said the episode underscored the investment case for AI cloud services, projecting global AI infrastructure spending could reach $1 trillion in 2025. However, some warned of a bubble: the Economic Times noted Ellison's wealth is stock‑price dependent and could retreat if AI demand slows.
Ellison's position atop the rich list prompted public discussion. YouTube analyses highlighted his lavish lifestyle, including ownership of a reported $1 billion yacht and a Hawaiian island. Compared with Musk's "Mars vision," Ellison is seen as more focused on building an enterprise empire. The Herald Tribune reported Ellison once collaborated with Musk on AI projects, though the two differ in style. The reversal could signal a new wealthy‑rank dynamic: senior executives of established software firms leveraging AI are rising to challenge founder‑dominated leadership.
Looking ahead, Ellison's stay at the top may be brief. Bloomberg suggested that if Tesla's Robotaxi project advances, Musk could reclaim the crown. For now, however, the AI cloud wave favors Ellison. Forbes commented, "Ellison's rise proves software + AI is a new engine of wealth." In any case, the episode is a reminder that peaks of tech wealth can change hands overnight.