Safety in investing is often associated with lower returns, no risk, no reward. However, diversification presents an exception to this rule. It's been shown that spreading your investments across the globe reduces risk while simultaneously increases your expected returns. "Diversification is the only free lunch in finance" - Harry Markowitz, Nobel prize winning economist Global diversification is indeed beneficial, but it's important to recognize the added factor it brings to your portfolio. When you own international stocks, you gain exposure to foreign companies AND their currencies, thus you'll need to deal with fluctuations in stock prices and exchange rates. Let's demonstrate this with an example. Carl Buys American Carl is a Canadian investor who wants exposure to the US market. To do this, he buys SPY, an ETF that tracks the S&P 500. Carl is now the proud (part) owner of the largest 500 companies in America. Over the year, U