The world’s billionaire wealth reached a record $15.1 trillion in 2025, while the global billionaire population climbed to an all-time high of 3,795 people, according to Altrata’s Billionaire Census 2026. The number of billionaires increased 8.2% during the year, marking the strongest annual expansion in five years.
The combined fortune of the billionaire class rose 12.8%, significantly outpacing population growth. Altrata attributed much of the increase to strong equity-market performance and the accelerating investment boom surrounding artificial intelligence, although several other asset classes also posted positive returns during the year.
The figures illustrate how rapidly wealth accumulated at the highest levels of the global economy during a year when technology valuations, particularly those connected to AI, became increasingly important to investors. They also show that the gains were not distributed evenly among billionaires.
At the very top of the wealth pyramid, fortunes became substantially more concentrated. The number of people classified by Altrata as “superbillionaires,” with net worth above $50 billion, reached 29 in 2025. Together, they controlled approximately $4.1 trillion, equivalent to 27% of the total wealth held by all billionaires.
AI Investment Became a Major Driver of Billionaire Wealth
Artificial intelligence emerged as one of the defining forces behind billionaire wealth creation in 2025. Altrata examined 150 publicly listed companies that contributed significantly to billionaire wealth and found a notable performance gap between companies that invested meaningfully in AI and those that did not.
Companies in the group that made meaningful AI investments recorded market-capitalization growth that was 23% higher over the combined 2024-25 period than companies without comparable AI investment. That performance translated into substantial gains for founders, major shareholders and other billionaires whose fortunes are closely tied to corporate equity.
The relationship between AI investment and personal wealth is particularly important because billionaire fortunes are often heavily concentrated in ownership stakes in companies. When the valuation of a major technology company rises sharply, the increase can flow directly into the net worth of its founders and principal shareholders without requiring those individuals to sell their holdings.
Altrata said the AI boom helped create a new generation of fortunes across areas including foundation models, cloud applications, robotics and cybersecurity. At the same time, established technology billionaires benefited from rising valuations and corporate activity across the broader sector.
That concentration also creates greater exposure to market volatility. Maya Imberg, Altrata’s head of thought leadership and analytics, said technology-focused billionaires could see their fortunes move sharply as investors reassess the long-term potential of AI.
The risk became visible in 2026 as technology and semiconductor stocks experienced significant swings. A major chip-stock selloff in July erased roughly $1.3 trillion in market value, demonstrating how quickly changes in investor expectations can affect companies at the center of the AI investment cycle.
For billionaires whose fortunes are dominated by those companies, such movements can translate into enormous changes in paper wealth. Forbes, for example, reported an $18 billion one-day decline in Elon Musk’s net worth following a sharp fall in Tesla shares, while Larry Ellison experienced a multibillion-dollar decline over a single week as technology stocks moved lower.
Altrata’s Billionaire Census 2026 provides the broader data behind the shift, including the growing concentration of wealth among the world’s richest individuals.
The World’s Richest Billionaires Are Capturing a Larger Share
The rise in billionaire wealth was accompanied by a striking increase in concentration at the top of the group. In 2017, only 10 individuals had fortunes exceeding $50 billion, and their combined wealth represented 7.2% of all billionaire wealth.
By 2025, that group had expanded to 29 people and controlled 27% of the billionaire class’s total fortune. Their combined $4.1 trillion represented a dramatic increase in both the number of people at the highest wealth tier and their share of the overall billionaire economy.
The broader distribution is considerably less concentrated than the figures at the very top might suggest. Almost half of the world’s billionaires had net worth between $1 billion and $2 billion, while another third held between $2 billion and $5 billion. Together, those two groups accounted for 82% of the global billionaire population.
Only 425 billionaires had fortunes between $5 billion and $10 billion. A further 249 people were worth between $10 billion and $50 billion, while the 29 superbillionaires occupied the highest tier.
The result is a wealth structure in which relatively small changes in asset valuations can have very different consequences depending on where an individual sits in the hierarchy. Technology-sector gains have disproportionately benefited billionaires with significant equity exposure to companies positioned to profit from AI.
The trend also reflects the growing importance of scalable technology businesses in wealth creation. Public-market valuations, private-company funding, initial public offerings and corporate transactions can rapidly increase the value of large ownership stakes.
However, Altrata emphasized that AI was not the only factor behind the increase. In 2025, all major asset classes tracked by the firm delivered positive returns for the first time since the pandemic. Global equities led performance, while monetary easing and lower interest rates also supported fixed-income assets.
The year nevertheless remained volatile. Geopolitical tensions and changes in U.S. trade policy created uncertainty for investors and contributed to shifts in the way globally mobile capital was allocated. The result was a year of strong aggregate gains alongside significant differences between sectors, markets and individual portfolios.
The July chip-stock selloff illustrated the other side of the AI-driven wealth boom: the same concentration that can accelerate gains can also amplify losses when market sentiment changes.
North America Remained the Largest Billionaire Region
North America remained the world’s largest billionaire region in 2025, with 1,337 billionaires after the population increased 11.6%. Altrata linked part of that growth to the United States’ dominant position in both public and private technology markets.
The United States alone accounted for 1,265 billionaires, or roughly one-third of the global total. Their combined wealth reached about $6.7 trillion, representing approximately 44% of worldwide billionaire wealth.
Europe ranked next with 1,081 billionaires after a 7.9% increase. Asia had 881 billionaires, up 6.5% from the previous year. These figures underline the continued importance of the United States and other major financial and technology centers in the global wealth landscape.
The geographic distribution also reflects differences in the industries and assets that drive fortunes. North American billionaires have a particularly strong representation in technology, while industrial conglomerates and real estate feature more prominently among billionaires in parts of Asia. Banking and finance remained the most common primary industry across the global billionaire population.
The concentration of wealth in technology is particularly relevant to the current AI cycle. When a relatively small number of companies account for a significant portion of market gains, individuals holding large stakes in those businesses can see their fortunes rise much faster than the broader billionaire population.
That dynamic helps explain why billionaire wealth grew faster than the number of billionaires in 2025. A 12.8% increase in collective wealth compared with an 8.2% increase in population indicates that existing fortunes appreciated substantially while hundreds of new individuals entered the billionaire ranks.
Forbes’ report on Elon Musk’s $18 billion one-day decline illustrates how exposed the wealthiest individuals can be to movements in publicly traded technology companies.
The figures also reinforce the scale of the billionaire economy relative to other wealthy groups. Altrata estimated that approximately 5.9 million people worldwide had more than $5 million in personal wealth in 2025. Billionaires represented only 0.07% of that population but held 13% of its combined wealth. Within the broader ultra-high-net-worth population, billionaires represented about 0.7% of individuals while controlling approximately 24% of total wealth.
The S&P 500 provides another measure of the scale involved: Altrata estimated that the $15.1 trillion held collectively by billionaires in 2025 was equivalent to almost one-quarter of the index’s total market capitalization at the time.
