Harvard University has the world's largest pool of billionaire alumni with 52 billionaires having $205-billion in total, followed by University of Pennsylvania(28 billionaires), according to Wealth-X Global University UHNW Alumni Rankings. UK's Cambridge University is the only non-US institution in top-10. 206 billionaire alumni of these ten universities have $863-billion, which is 8-times greater than combined endowments of these universities.