Forbes wealth trends show shift from industrial to tech and finance sectors

Analysis of wealth trends reveals a shift in the industries driving billionaire status. While technology and finance remain dominant, modern wealth is increasingly generated through diverse sectors such as real estate, automotive, logistics, and cleaning supplies. According to Forbes 400 data from September 2026, finance and investment lead with 108 members, including Warren Buffett, while technology follows with 91 members, led by Elon Musk.

Historical data from 1918 shows a stark contrast in wealth drivers. During that era, the richest individuals built fortunes through oil, steel, railroads, and banking. John D. Rockefeller topped the inaugural list with an estimated wealth of $1.2 billion, which would equate to approximately $29 billion in today’s value. His wealth was primarily rooted in Standard Oil, a company that was broken up by antitrust regulators in 1911.