Generated August 16, 2026.
Overview
VOO and VTI are both Vanguard index ETFs tracking different slices of the U.S. equity market. VOO follows the S&P 500, capturing the 500 largest companies, while VTI tracks the broader CRSP US Total Market Index, which includes large-cap, mid-cap, and small-cap stocks. The key distinction is breadth: VOO is purely large-cap; VTI adds exposure to thousands of smaller companies that the S&P 500 excludes.
How they differ
The fundamental difference is scope. VOO holds 500 companies; VTI holds roughly 3,500, giving it meaningful mid and small-cap exposure that VOO lacks. Both charge the same 0.03% expense ratio and deliver nearly identical yields around 1.10%, paid quarterly. VTI is older (inception May 2001 vs. September 2010) and holds $696B in assets, while VOO is larger at $1045B. VTI's beta of 1.0379 reflects its smaller-company tilt; VOO's beta of 1.0 tracks the S&P 500 precisely by design.
Who each is best for
VOO: Fits investors who want pure large-cap index exposure and value simplicity; aligns with allocators focused on the economy's largest corporations or those building a custom multi-fund portfolio with separate mid and small-cap layers.
VTI: Fits investors seeking a single-fund total U.S. market exposure; aligns with buy-and-hold allocators who prefer the broadest possible domestic equity base without constructing a multi-ETF framework.
Key risks to know
- Small-cap underperformance in VTI. Mid and small-cap stocks are more volatile and cyclical than large caps. In extended periods of large-cap outperformance (as occurred 2016–2023), VTI will lag VOO. This is a style bet baked into VTI's design.
- Concentration in mega-cap technology across both. Both ETFs hold Apple, Microsoft, Nvidia, Tesla, and other mega-cap tech names heavily. If these names fall sharply, both funds experience similar drawdowns. The holdings overlap significantly at the top positions.
- Interest-rate sensitivity tilted to VTI. Rising rates hurt equity valuations generally, but small and mid-caps (overweight in VTI) are more sensitive to rate shocks than large-caps (VOO's focus). During rapid rate hikes, VTI may experience larger price declines than VOO.
Bottom line
Both ETFs offer rock-bottom fees and solid dividend yields, so the choice hinges on market-cap preference and portfolio architecture. VOO delivers tight tracking of the 500 largest firms; VTI casts a wider net and includes thousands of smaller companies. If you want exposure to the entire U.S. market in one holding, VTI fits that need. If you prefer the large-cap simplicity and want to layer smaller-cap exposure separately, VOO aligns with that approach. Past performance of either does not predict future results.
AI-generated analysis for educational purposes only. Verify important details independently; past performance does not guarantee future results.