Three funds. Global diversification. Ultra-low costs. This elegant strategy has made millions of investors wealthy.
The three-fund portfolio is an investment strategy popularized by the Bogleheads community (followers of Vanguard founder Jack Bogle) that uses just three index funds to achieve complete global diversification at minimal cost. It's been called the only investment strategy most people will ever need — and the data backs that claim up.
Your core holding. Provides exposure to the entire U.S. economy — all publicly traded American companies from the largest giants to small emerging businesses. This is your primary growth engine.
Examples: FZROX (Fidelity, 0.00%), VTI (Vanguard, 0.03%), SCHB (Schwab, 0.03%)
Provides exposure to developed and emerging market stocks outside the U.S. The U.S. represents roughly 60% of global market cap — this fund covers the other 40%, adding true global diversification and reducing dependence on any single country's economic performance.
Examples: FZILX (Fidelity, 0.00%), VXUS (Vanguard, 0.07%), SWISX (Schwab, 0.06%)
Provides stability and income. Reduces portfolio volatility, particularly important as you approach retirement. Young investors can start with a small allocation (or none) and increase it over time.
Examples: FXNAX (Fidelity, 0.025%), BND (Vanguard, 0.03%), SCHZ (Schwab, 0.03%)
A common starting point: subtract your age from 110 for your stock allocation, split roughly 60/40 between U.S. and international stocks, with the remainder in bonds.
The three-fund portfolio works because it eliminates the three main ways investors destroy wealth: paying high fees (all three funds have costs under 0.10%), failing to diversify (you own the entire global stock market), and making emotional trading decisions (three funds with a target allocation leaves nothing to tinker with). Its simplicity is a feature, not a limitation.
Once a year, check if your allocations have drifted from your targets. If U.S. stocks have grown to 75% when you target 66%, sell some and buy more of the lagging assets to restore balance. Most investors rebalance annually or when any allocation drifts more than 5% from target.