Too many people think investing is easy – Warren Buffett Guest commentary: Jon Hirtle Executive Chairman, Hirtle Callaghan Most universities distribute about 4.5 to 5 percent of their endowment’s value each year to support school operations. The investment office therefore must earn a bare minimum 4.5 to 5 percent to maintain the nominal value of the endowment and its ability to support the university in perpetuity. But what about purchasing power? Inflation whittles away at buying power ...