Harvard University skyline.

The Massachusetts Institute of Technology has its hedge-fund quants, the University of Southern California has its movie moguls. But if you really want your child to be a billionaire, you might want to send them to Harvard.

Harvard has graduated some 52 billionaires, with a collective fortune of $205 billion, to lead Wealth-X's global list of universities ranked by alumni worth $1 billion or more. That's nearly twice as many as the No. 2 school, the University of Pennsylvania, which has 28 billionaire alumni worth a collective $112 billion.