What are ETFs?
Exchange Traded Funds (ETFs) are a simple way to invest in the stock market by providing instant diversification and flexibility.1 ETFs like VTI and VOO invest in a basket of securities, mostly equities, so you get broad exposure to the stock market, all within one purchase. Vanguard is one of the most well-known ETF providers, where VTI and VOO are their flagship offerings for US equity exposure.
Both VTI and VOO are index funds, meaning they are low cost and passively managed. Understanding the difference between these two ETFs will help you make better investment decisions that align with your long-term goals. The US Total Market Index is the benchmark that guides how these funds work and what’s in their portfolios.
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Vanguard S&P 500 ETF (VOO)
The Vanguard S&P 500 ETF (VOO) tracks the S&P 500 Index which represents the 500 largest publicly traded US companies.2 The companies in the S&P 500 Index are listed and traded on major US stock exchanges, which makes VOO liquid and stable as an investment vehicle.
VOO is also market-cap weighted, meaning the largest companies in the S&P 500 have more influence on the fund’s performance.3 The fund holds 505 stocks, so you get some of the most well-known and established companies in the US.
VOO has the same expense ratio as VTI at 0.03%, so it’s an equally good option for investors who want to keep costs low. Top sector exposures in VOO are similar to VTI, with Information Technology, Consumer Discretionary and Financials leading the way.
» Read more: The Warren Buffett 2-Fund Portfolio
Vanguard Total Stock Market ETF (VTI)
The Vanguard Total Stock Market ETF (VTI) tracks the CRSP US Total Market Index, so you get exposure to almost all publicly traded US companies across every market cap.4 VTI is a market-cap weighted index fund, so the largest companies have more influence on the fund’s performance.
The fund holds over 3,600 stocks, so you get a wide variety of assets across different classes of securities, sectors and all market caps for true diversification.5 VTI has a low Total Expense Ratio (TER) of 0.03%, so it’s a great option for fee-conscious investors who want to keep costs low.
Top sector exposures in VTI are Information Technology, Financials and Consumer Discretionary, which reflects the current composition of the US economy.
» Read more: The 3 Best Vanguard ETFs to Own for Life
Expense Ratio
Both VTI and VOO have the same 0.03% expense ratio, so they’re great options for investors who prioritize costs over the long term. Expense ratio plays a big role when evaluating ETFs because even small differences in fees can add up over time through compounding.6
A lower expense ratio means more of the fund’s returns go to you, the investor, rather than management fees. VTI and VOO are among the lowest cost ETFs in their categories, so they’re good options for investors who want to keep costs down.
The Total Expense Ratio is the metric to use when evaluating the true cost of owning an ETF and both funds score well on this measure.
» Want to see more? Compare top index funds through our free cheatsheet
Investment Objectives and Strategies
When deciding between VTI and VOO, consider your investment objectives and overall strategy. VTI may be more suitable for investors who want broad exposure to the entire US stock market, including small and mid-cap companies that offer additional growth and diversification beyond large caps alone.
VOO might be for investors who want to focus on the largest and most established US companies and accept less diversification for the stability and track record that comes with blue chip exposure. Your risk tolerance and time horizon also come into play here.
A long-term investment strategy helps investors ride out market volatility and stay focused on their financial goals over time. Asset allocation is key when investing in ETFs as the right mix is dependent on your individual circumstances and objectives. In the end, you should decide between VTI and VOO based on your personal investment goals and the level of market exposure you want in your portfolio.
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Holdings and Sector Allocation
VTI and VOO have different holdings and sector allocation which can impact performance over various market cycles. VTI holds more stocks by including small and mid-cap companies, so it’s more diversified across the entire US equity market.
VOO has a more concentrated portfolio focused on large-cap stocks, so it’s targeted exposure to the biggest companies in the economy. The sector allocation of each fund can also impact performance, VTI has slightly different sector weightings than VOO because of the small and mid-cap stocks.
Top sector exposures for VTI are Information Technology, Financials and Consumer Discretionary, but the weightings are different from VOO because of the additional mid and small-cap stocks. The fund’s holdings and sector allocation directly impact its historical performance patterns and volatility characteristics over time.
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Performance Metrics and Analysis
Investors should evaluate VTI and VOO using multiple performance metrics, returns, volatility and dividend yield. VTI and VOO have similar performance over the long term, but VOO has outperformed VTI in some periods because large caps have performed well in recent years.7
The performance difference between VTI and VOO is mainly due to their underlying holdings. Both funds have strong long-term growth potential, but market fluctuations can cause their future performance to diverge depending on whether large caps or smaller companies lead the market.
VTI has been more consistent in some short-term periods with slightly lower volatility than a pure large-cap approach. Dividend yield is another factor that can impact each fund’s attractiveness to income seeking investors.
Dividends contribute meaningfully to the total returns of both VTI and VOO, so they’re important for income focused investors who want capital appreciation too. Comparing dividend yields and understanding how each fund distributes earnings helps income focused investors decide which fund is better for their portfolio.
The Calmar ratio is a useful metric to evaluate the risk-adjusted performance of an ETF by comparing returns to maximum drawdown. Historical performance is valuable when evaluating an ETF, but past results never guarantee future outcomes.
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Growth Potential and Market Conditions
Consider the growth potential of both VTI and VOO in the current market conditions. Both funds have long-term growth potential, but VOO may be more sensitive to market conditions because of its concentrated large-cap exposure.
The US stock market, including the S&P 500, impacts both funds since they track US equity indexes. Also, weigh the effects of interest rates, inflation and other macroeconomic factors when evaluating these funds.
The big tech sector has heavily influenced both funds’ performance in recent years given the heavy weightage of technology giants in both portfolios. Market capitalization of the companies within each fund’s portfolio plays a major role in determining how the fund performs across different economic environments.
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VOO vs VTI (Overview)
When you’re deciding between the Vanguard S&P 500 ETF (VOO) and the Vanguard Total Stock Market ETF (VTI), you’re looking at a choice that really comes down to your investment goals, how much risk you’re comfortable with and what kind of US stock market exposure you want. Both ETFs are passively managed and have the same 0.03% expense ratio, so they’re smart, low-cost options to build a portfolio you can stick with long term.
The big thing to understand is what each fund actually tracks. VOO tracks the S&P 500 Index, so you get exposure to those large-cap giants that dominate the US stock market with heavy weightage in sectors like Information Technology, Consumer Discretionary and Financials. VTI takes a different approach by tracking the CRSP US Total Market Index, which gives you access to the entire US stock market including large, mid and small caps in one fund. That broader exposure increases your diversification and potentially lowers your risk by spreading your money across many more companies and sectors.
Market cap coverage is where these two funds really split apart. If you like the idea of sticking with established large-cap companies that have a proven track record, VOO might be your speed. But if you want a more complete picture of the US equity market, including the growth potential from mid and small caps, VTI could be the better fit. Both funds have similar dividend yields, but VOO’s higher weightage in big tech stocks can significantly impact its performance especially when technology leads the market.
Making a smart choice here means looking at the numbers. Historical performance, volatility and sector exposures for both ETFs reveal a lot about what you’re getting into. Tools like comparison tables and data from reputable providers can help you understand the differences in performance, risk and what’s inside each index. Review metrics like Calmar ratio and standard deviation to get extra insight into risk-adjusted returns and volatility and match your choice with your risk comfort level and long-term plan.
Metric (data as of 11/30/2025) | VOO ETF | VTI ETF |
Index Tracked | S&P 500 Index | CRSP US Total Market Index |
Launch Year | 2010 | 2001 |
Assets Under Management (AUM) | $823B | $567B |
Expense Ratio | 0.03% | 0.03% |
Number of Stocks | 505 | 3527 |
Dividend Yield (TTM) | 1.14% | 1.13% |
Top Ten Holdings (%) | 39.62% | 34.77% |
Technology Exposure (%) | 35.37% | 33.23% |
S&P 500 Overlap (by weight) | 100% | 88% |
Past 3-Yr Annual Returns | 20.55% | 19.84% |
Past 10-Yr Annual Returns | 14.58% | 14.01% |
At the end of the day, choosing between VOO and VTI should reflect what you personally want from your investments and how you think about diversification. If your strategy is to have broad market exposure and tap into small and mid-caps, VTI makes more sense. If you’d rather focus on large-cap companies with solid stability and consistent dividend payments, VOO could be more your style.
No matter which ETF you choose, keep a long-term perspective and diversify your portfolio to ride out the stock market’s ups and downs. By examining expense ratios, market cap coverage, dividend yields, sector exposures and risk metrics you can make a decision that supports your financial goals and helps you build real wealth over time.
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Investing in the Stock Market
Investing in the stock market is a proven way to grow wealth over the long term but always involves risks that need to be carefully considered. You should evaluate your investment objectives, risk tolerance and time horizon before putting money into the stock market.A portfolio that includes multiple asset classes like stocks, bonds and other investments helps to minimize risk by spreading exposure across different market segments. Consider the fees and expenses of investing in the stock market including each ETF’s expense ratio as these costs add up over time.
A long-term investment strategy with regular portfolio rebalancing will help you stay on track to your financial goals. The stock market is volatile and you should prepare yourself mentally and financially for losses along the way.
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Final Thoughts
VTI and VOO are both popular ETFs that offer US stock market exposure but they differ in important ways that matter for long-term investors. You should consider your investment objectives, risk tolerance and time horizon when deciding between these two funds.
A long-term investment strategy with regular portfolio rebalancing will help you achieve your financial goals over time. Expense ratio, dividend yield and historical performance are all worth considering when evaluating these funds.
You should also look into the underlying index, investment strategy and sector exposure of each fund to know what you’re actually buying. Market cap and liquidity characteristics can impact both performance and the fund’s attractiveness to different types of investors.
A thorough comparison of the two funds will help you make an informed decision that fits your personal circumstances and long-term plan for your portfolio.
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