A good portfolio mix depends on your financial goals and risk tolerance. Many portfolios include a mix of stocks, bonds, money markets, and alternative investments. Beyond investing in these asset classes, investors often include both domestic and international stocks and bonds in their portfolios. If you're having trouble selecting an appropriate portfolio mix, investing in a total stock index or a target-date fund might provide immediate diversification across a range of investments until you feel comfortable selecting your own. If you have more in-depth questions about investing, you might consider speaking with a financial advisor.