David Swensen has been called “Yale’s $8 billion man” for outperforming the average university endowment by that amount during the first 20 years of his tenure as Yale’s Chief Investment Officer. Chalk that outperformance up to the success of what’s become known as the “Yale model,” or the insight that institutional investors like endowments or pension funds can achieve outsize returns by allocating a large chunk of their assets to hedge funds, private equity, real estate, and other alternative investments.