Wealth-X has ranked the world’s business schools by the number of billionaires who graduated from their MBA programs.

U.S. business schools dominate the list, taking seven of the top 10 spots, according to the ultra-high-net-worth research firm.

The No. 1 school has nearly three times as many billionaire alumni as the business school taking second place.

No. 10
London Business School

Four billionaire alumni