Items30The creator’s order
  1. 1Michael Platt (financier)Michael Platt (financier)Born 18 Mar 1968US$20.9bn. Platt cofounded BlueCrest Capital Management. The firm moved away from outside investors to managing partners' and employees' capital, making proprietary investment returns central to the business behind his fortune.0
  2. 2Nik StoronskyNik StoronskyBorn 21 Jul 1984US$18.8bn. Storonsky cofounded Revolut, building a financial-services business around a mobile app. His retained stake connects the estimate to private-company valuations, which can change when investors transact.0i
  3. 3Jim RatcliffeJim RatcliffeBorn 18 Oct 1952US$18.4bn. Ratcliffe founded INEOS in 1998 after an earlier career in chemicals. Buying and operating industrial businesses built the fortune; his prominent sports investments came later.0i
  4. 4James DysonJames DysonBorn 2 May 1947US$15bn. Dyson turned bagless vacuum-cleaner technology into a global consumer-appliance company. His route combines invention with ownership of the business that brought the products to market.0i
  5. 5Dmitry BukhmanDmitry BukhmanBorn 27 May 1985US$13.6bn. Dmitry Bukhman founded Playrix with his brother Igor. Starting with PC games sold online, they developed a mobile-games business while retaining majority ownership without external funding.0i
  6. 6Igor BukhmanIgor BukhmanBorn 29 Mar 1982US$13.6bn. Igor Bukhman built Playrix with his younger brother Dmitry. The source attributes an equal individual fortune to each, linking both entries to the same privately owned games developer.0
  7. 7David ReubenDavid ReubenBorn 14 Sept 1938US$13.3bn. David Reuben began in metals trading before developing a broad investment business with his brother Simon. Property and data centres became important parts of their later portfolio.0
  8. 8Simon ReubenSimon ReubenBorn 20 May 1941US$13.3bn. Simon Reuben started in the carpet trade and moved into property before joining forces with David. Their separately attributed fortunes are equal, despite the different starting points in their careers.0
  9. 9Alex GerkoAlex GerkoBorn 3 Dec 1979US$12bn. Gerko founded XTX Markets after a career in trading. A mathematical background and an electronic market-making business distinguish his route from the property and manufacturing fortunes elsewhere here.0
  10. 10Chris HohnChris HohnUS$11.8bn. Hohn founded The Children's Investment Fund Management in 2003. His hedge-fund business and activist investing underpin the fortune, while the similarly named charitable foundation is a separate organisation.0i