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VTI vs VOO: Which ETF Is the Smarter Buy Today?

VTI (Total Stock Market) and VOO (S&P 500) are nearly identical, but one currently holds a clear edge. We break down the differences and help you decide.

May 19, 2026
2 min read
Source: Motley Fool
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The Vanguard S&P 500 ETF (VOO) and the Vanguard Total Stock Market ETF (VTI) are two of the most popular index funds among investors. Despite their striking similarity in performance and structure, one currently has a distinct advantage.

Key Differences

Composition

  • VOO: Tracks the S&P 500, comprising 500 of the largest U.S. companies.
  • VTI: Tracks the CRSP US Total Market Index, including thousands of small-, mid-, and large-cap stocks.

Historical Performance

Due to the heavy weighting of mega-cap stocks, VOO and VTI have delivered nearly identical long-term returns. The annual difference is typically just a few basis points.

Costs

Both funds boast ultra-low expense ratios of 0.03%. No meaningful difference.

The Current Edge

The advantage one fund holds today comes down to exposure to smaller companies. In the current market environment, where attention is shifting to less concentrated sectors, VTI offers additional diversification through thousands of extra stocks, potentially reducing risk and providing growth opportunities.

Which One to Choose?

  • Choose VOO if you want focused exposure to the largest, most stable U.S. companies.
  • Choose VTI if you prefer broader exposure to the entire U.S. market, with a greater weight on small- and mid-cap stocks.

Conclusion

Both are excellent long-term choices. The preference depends on your desire for diversification versus simplicity. Currently, VTI may be the more balanced option due to its comprehensive coverage.

Frequently Asked Questions

VTI tracks the total stock market index (thousands of stocks), while VOO tracks the S&P 500 (500 large companies).

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This article was rewritten in Wrqti's editorial style based on information from the original source above. Content is informational only — not investment advice.