Three-Fund Portfolio
Total market indexing, maximum simplicity
Philosophy
Own the entire stock and bond market at the lowest possible cost. Let compounding and low fees do the heavy lifting.
Origin
Late 1990s — Articulated by Taylor Larimore in 1999 on the Morningstar Vanguard Diehards forum.
Key Principles
- ✓ Total US stock market for domestic equity exposure
- ✓ Total international stock market to reduce home-country bias
- ✓ Total bond market for stability and income
- ✓ Minimise costs — every basis point saved compounds over time
Target Allocation
| Asset | Category | Weight |
|---|---|---|
| US Total Market (VTI) | Equity | 40% |
| International Stocks (VXUS) | Equity | 20% |
| US Total Bond Market (BND) | Bonds | 40% |
Advantages
- Maximum simplicity — just three funds
- Ultra-low cost with index funds
- Broad global diversification
- Easy to adjust stock/bond ratio as you age
Considerations
- No alternative assets (gold, real estate, commodities)
- International stocks can lag US for years
- No downside protection beyond bond allocation
- Requires discipline to stay the course during crashes
Best For
Long-term investors who believe in market efficiency and want the simplest possible globally diversified portfolio.
Annual rebalancing as recommended by the Bogleheads community.
About the Author
Jack Bogle founded Vanguard and pioneered index fund investing. The Three-Fund Portfolio was popularized by the Bogleheads community.
Frequently Asked Questions
What is the Three-Fund Portfolio?
The Three-Fund Portfolio holds just three index funds: a US total stock market fund, an international stock fund, and a US total bond market fund. It was popularized by the Bogleheads community, inspired by Jack Bogle's philosophy of low-cost, broad-market investing.
What ratio should I use for the Three-Fund Portfolio?
A common starting point is 40% US stocks, 20% international stocks, and 40% bonds. Younger investors often increase the stock portion (e.g., 60/20/20), while those closer to retirement increase bonds. The key is choosing a ratio you can stick with.
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