The total number of billionaires across the globe reached new heights in 2025, due partly to the soaring valuations of tech companies and rising stock markets. Some 2,900 billionaires now control $15.8 trillion, up from about 2,700 billionaires with a cumulative wealth of nearly $14 trillion a year earlier. The number and wealth of billionaires as a whole were boosted by the second-highest number of new billionaires minted in a year—287.