Blindly shoving all your money into Vanguard ETFs is a strategy that works well for almost every <i>individual</i> who's retirement period maxes out at 70 years (for the MMM types).<p>An endowment is a fund of money designed to sustain operations of it's benefactor <i>forever</i>. Not 10 years. Not 50 years. Literally forever. When you're operating on an indefinite timescale your idea of "risk" changes considerably.<p>Take a look at the Harvard Endowment report[1], specifically the table on page 2. They are incredibly well diversified, across domestic and international public equities, as well as private equity, commodities, fixed income securities (bonds, etc), real estate, and a category they call "absolute return", which is where they've placed money into external hedge funds. If the US economy tanks, they'll be fine. If Europe falls apart, they'll be fine. A bunch of start up unicorns fail in Silicon Valley? Fine.<p>My point is that the article completely misses the goals of an endowment. They don't particularly care about matching or beating an index, nor do they care about risk (as measured by volatility). They care about wipe out risk, on the scale of centuries.<p>[1]: <a href="http://www.hmc.harvard.edu/docs/Final_Annual_Report_2014.pdf" rel="nofollow">http://www.hmc.harvard.edu/docs/Final_Annual_Report_2014.pdf</a>