Of course the intake isn't even close to randomly selected so you would assume those who had the most "desirable traits" would do the best. But here's a bit of surprise (to me):
"Harvard is in a league of its own and its population is more than double Stanford University and the University of Pennsylvania in second and third with around 5,580 super rich alumni each. Wealth-X's report mentions that the vast majority of the wealthy alumni from U.S. universities are actually self-made. For example, 79 percent of wealthy alumni from Harvard are self-made, 15 percent have mixed sources for their fortunes and only 6 percent inherited it."