Investing in foreign and international stocks can add diversification and potential for higher returns to a portfolio. Options include domestic brokerages, foreign brokerages, and Exchange-Traded Funds (ETFs). Factors to consider include market conditions, economic growth, and stability and liquidity of the foreign market. It's important to research the market, understand risks and weigh the potential rewards before making investment decisions.

Statistics like alpha and beta can provide light on the relationship between investment risk and return in mutual funds