Just 29 individuals each worth over $50 billion now control 27% of all billionaire wealth, totaling $4.1 trillion of a $15.1 trillion pool.
The superbillionaire share surged from 7% in 2017 to 27% in 2025, driven by AI-focused valuations and compounding capital-market gains.
Total billionaire wealth equals nearly a quarter of the S&P 500's market cap, meaning wealth-pyramid concentration and index concentration are the same phenomenon.
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The Altrata Billionaire Census 2026, published in August 2026 and reporting on calendar year 2025, delivers a finding that reframes how concentrated the top of the global wealth pyramid has become. Twenty-nine superbillionaires, each with a net worth in excess of $50 billion, control 27% of total billionaire wealth, up from a share of 7% in 2017. That group sits inside a global billionaire population that surged to an all-time high of 3,795 individuals in 2025, with combined wealth of $15.1 trillion, according to Altrata.