Study: Educational Endowments' Investment Returns Averaged 15.5 Percent in FY2014

Study data are broken down into six categories according to size of endowment, ranging from institutions with endowment assets under $25 million to those with assets in excess of $1 billion. The highest average return, 16.5 percent, was reported by institutions with assets over $1 billion, while the lowest, 15.2 percent, was reported by two size cohorts—institutions with assets between $51 and $100 million and those with assets between $25 and $50 million.