VTI vs VOO vs VXUS: Building a Simple Three-Fund Portfolio

Many investors find themselves overwhelmed by the sheer number of investment options available. However, a simple “three, , fund, , portfolio,” constructed with “vanguard, , etf”s, can provide broad diversification and potentially strong long-term returns. This article will explore the components of such a “three, , fund, , portfolio,” focusing on “VTI,” “VOO,” and “VXUS,” and how they can be used to create a diversified investment strategy.

Understanding the Three-Fund Portfolio

The “three, , fund, , portfolio” is a popular investment strategy known for its simplicity and diversification. It typically consists of three low-cost index funds: a U.S. total stock market fund, an international stock market fund, and a bond market fund. By investing in these three asset classes, investors can achieve broad diversification across thousands of stocks and bonds, both domestically and internationally. The goal is to capture market returns while minimizing risk through diversification.

A backtest of a “three, , fund, , portfolio” with a 60/20/20 allocation (60% U.S. stocks, 20% international stocks, and 20% bonds) showed that a $10,000 investment would have grown to $27,873 over the past 10 years (Quantflowlab, Mar 2026). This highlights the potential for long-term growth with a diversified, low-cost approach.

VTI: Vanguard Total Stock Market ETF

“VTI,” the “Vanguard” Total Stock Market “ETF,” seeks to track the performance of the CRSP US Total Market Index. This index represents the entire U.S. equity market, including small-, mid-, and large-cap companies. As of February 2026, “VTI” held over 3,500 U.S. stocks (Quantflowlab, Feb 2026). This broad diversification makes “VTI” a cornerstone of many “three, , fund, , portfolio”s.

The expense ratio of “VTI” is 0.03% (Eigendex, Mar 2026), meaning that for every $10,000 invested, the annual cost is only $3. This low cost is a significant advantage, as it minimizes the impact of fees on long-term returns. As of February 2026, “VTI“‘s asset under management (AUM) was approximately $585 billion (Quantflowlab, Feb 2026).

VOO: Vanguard S&P 500 ETF

“VOO,” the “Vanguard” S&P 500 “ETF,” aims to track the performance of the S&P 500 index, which represents 500 of the largest publicly traded companies in the United States. While “VOO” provides exposure to a significant portion of the U.S. stock market, it does not include mid- and small-cap companies like “VTI” does.

Similar to “VTI,” “VOO” has a very low expense ratio of 0.03% (Eigendex, Mar 2026). As of February 2026, “VOO“‘s AUM was over $800 billion (Quantflowlab, Feb 2026). Due to the large overlap in holdings, the performance of “VTI” and “VOO” are very similar. Over the past ten years, “VTI” returned approximately 14.3% annualized, while “VOO” returned about 14.8% annualized (Quantflowlab, Feb 2026).

VXUS: Vanguard Total International Stock ETF

“VXUS,” the “Vanguard” Total International Stock “ETF,” seeks to track the performance of the FTSE Global All Cap ex US Index. This index represents the broad international equity market, including both developed and emerging markets. As of February 2026, “VXUS” held over 8,700 companies across 49 countries (Quantflowlab, Mar 2026).

The expense ratio of “VXUS” is slightly higher than “VTI” and “VOO” at 0.05% (Quantflowlab, Mar 2026). As of February 2026, “VXUS“‘s AUM was approximately $143 billion (Quantflowlab, Mar 2026). International diversification can help reduce portfolio risk, as different markets may perform differently at various times. In 2025, “VXUS” returned +32.35%, outperforming “VTI” by over 15 percentage points (Quantflowlab, Mar 2026).

VTI vs VOO: Which to Choose?

The decision between “VTI” and “VOO” often comes down to investment philosophy. “VTI” provides complete coverage of the U.S. stock market, including small- and mid-cap companies, while “VOO” focuses on the 500 largest companies. Historically, the performance difference between the two has been minimal. Over the past ten years, the gap between a $10,000 investment in “VTI” and “VOO” was approximately $1,850 (Quantflowlab, Feb 2026).

While both are viable options, some investors prefer “VTI” for its more complete market coverage. “VTI” includes small and mid-cap stocks (18% of portfolio) offering slightly more diversification (Eigendex, Mar 2026).

Incorporating Bonds

While this article primarily focuses on stock ETFs, a “three, , fund, , portfolio” typically includes a bond fund to reduce overall portfolio risk. A common choice is the “Vanguard” Total Bond Market “ETF” (BND), which provides exposure to a broad range of U.S. investment-grade bonds. The allocation to bonds depends on an investor’s risk tolerance and time horizon. Younger investors with a longer time horizon may choose a smaller allocation to bonds, while older investors closer to retirement may prefer a larger allocation.

BND has an expense ratio of 0.03% and a yield of approximately 3.8% as of February 2026 (Quantflowlab, Mar 2026).

Building Your Three-Fund Portfolio

To build a “three, , fund, , portfolio” using “VTI,” “VXUS,” and a bond fund, investors need to determine their desired asset allocation. A common starting point is a 60/30/10 allocation (60% U.S. stocks, 30% international stocks, and 10% bonds). However, this can be adjusted based on individual circumstances.

For example, a more conservative investor might choose a 40/20/40 allocation, while a more aggressive investor might opt for an 80/10/10 allocation. Once the asset allocation is determined, investors can purchase shares of each “ETF” in the appropriate proportions.

Rebalancing

Rebalancing is the process of periodically adjusting a portfolio to maintain the desired asset allocation. Over time, some asset classes may outperform others, causing the portfolio to drift away from its target allocation. Rebalancing involves selling some of the overperforming assets and buying more of the underperforming assets to bring the portfolio back into balance.

For example, if a portfolio’s target allocation is 60% stocks and 40% bonds, and stocks have outperformed, the portfolio might now be 70% stocks and 30% bonds. To rebalance, the investor would sell some stocks and buy more bonds to return to the 60/40 allocation. Rebalancing helps to maintain the portfolio’s desired risk level and can potentially improve long-term returns.

Conclusion

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Disclaimer: This content is for educational and informational purposes only and does not constitute financial, investment, or tax advice. The information presented reflects the author’s opinions and analysis at the time of writing and may not be suitable for your individual circumstances. Always consult with a qualified financial advisor before making investment decisions. Past performance is not indicative of future results. MinMaxDoc and its authors are not registered investment advisors.