How to Build a Three-Fund Portfolio with ETFs

The Complete Answer

The three-fund portfolio uses one US stock ETF, one international stock ETF, and one bond ETF to own essentially the entire investable market in three holdings. The standard Vanguard trio is VTI (US total market), VXUS (international total market), and BND (US total bond market), and equivalents exist at every major issuer.

Your allocation depends on age and risk tolerance. A common starting point for a long horizon is 60% VTI, 20% VXUS, 20% BND. A more aggressive young investor might run 80/20 stocks with no bonds yet, while someone near retirement might hold 40% or more in BND to cut volatility.

The appeal is cost and simplicity. The blended expense ratio of this trio sits near 0.04-0.05%, meaning roughly $4-5 per year on $10,000. You get exposure to thousands of US companies, thousands of international companies, and the broad bond market, with nothing to research or trade week to week.

Maintenance is one decision per year: rebalance back to your target percentages, ideally by directing new contributions into whichever fund has fallen behind so you avoid selling. If even three funds feels like too much, a single total-world stock fund like VT collapses the entire stock side into one ticker.