The Three-Fund Portfolio by Taylor Larimore is an investing staple on the fantastic forums at Bogleheads.org.  While the specific allocation percentages may vary by individual investor, the one represented here is a good starting point. You can read Taylor’s recommendations in his book The Bogleheads’ Guide to the Three-Fund Portfolio and join the ongoing discussion here.

Asset Allocation

• 40% Total Stock Market
• 20% International Stocks
• 40% Intermediate Bonds

Performance

Change the home country to translate the portfolio to local assets, currency, and inflation