However, for investors seeking more diversification, I think it can pay dividends (quite literally) to consider complementing a U.S. equity-heavy portfolio with some European names. Sure, going 100% (or close to it) in the U.S. names will grant you a front-row seat to America's long-term ascent, and there's nothing fundamentally wrong with doing so. However, I believe it doesn't hurt to add some international exposure as well for the value of geographic diversification and, perhaps more importantly, lower valuations.