What happened
A new report from wealth intelligence firm Altrata, cited by Fortune, found that the number of billionaires worldwide reached a record 3,795 in 2025.
The group's combined wealth rose 12.8% year over year to $15.1 trillion, a fresh high and a figure close to one-quarter of the total market value of S&P 500 companies.
The report highlights the AI investment boom as a major force behind the surge, with many tech billionaires seeing sharp increases in their fortunes as their companies' AI businesses expanded.
Why it matters
The data underscores how a concentrated wave of AI-driven gains can reshape global wealth distribution, lifting a small group of technology founders and investors to unprecedented levels.
It also shows where that wealth is flowing: sports and philanthropy are the two preferred areas for billionaire asset allocation, with 201 billionaires owning or investing in sports franchises.
Owning a professional sports team appears to serve both as a display of financial scale and a way to expand social networks, while charitable giving has become a channel for billionaires to use their influence to drive change in selected fields.
Key facts
Altrata's report counts 3,795 billionaires globally in 2025, the highest number on record.
Total billionaire wealth grew by 12.8% to $15.1 trillion, also a record and roughly a quarter of the S&P 500's total market capitalization.
29 billionaires hold assets above $50 billion, including Larry Page, Elon Musk and Jeff Bezos.
AI investment is cited as the main driver of billionaire wealth growth, and 201 billionaires own or invest in sports teams or franchises.
What to watch next
Whether AI-driven wealth gains continue to concentrate among tech founders and investors, and how that affects the broader economy.
Whether more billionaires follow the sports investment trend as a way to combine financial returns with social access and influence.
How billionaires' charitable spending evolves as they seek to shape policy, research and social innovation through their foundations and donations.