Investors looking for low-cost options to achieve total stock market exposure may find both the iShares Core S&P Total US Stock Market ETF (ITOT) and the Vanguard Total Stock Market ETF (VTI) appealing choices. While both funds provide diversified U.S. equity exposure, they present significant differences related to fund size, number of holdings, and sector allocations.
Both ETFs maintain an identical expense ratio of 0.03%, making them cost-effective choices for budget-conscious investors. Their performance over the past year has also been closely matched, with VTI slightly outperforming ITOT, boasting a 14.76% return compared to ITOT’s 14.69%. The dividend yields are nearly indistinguishable, with VTI at 1.11% and ITOT at 1.09%, adding little disparity to their appeal.
When it comes to fund size, a notable distinction exists. VTI leads the way with $567 billion in assets under management (AUM), vastly overshadowing ITOT’s $80 billion. This significant difference in AUM is an important factor for investors, as larger funds typically offer better liquidity. Greater liquidity can facilitate buying and selling without significantly impacting the ETF’s share price, thus enhancing investment flexibility.
The diversification of holdings is another area where the two ETFs diverge. VTI holds a total of 3,527 stocks, providing broad exposure across large-, mid-, and small-cap companies. This wide array includes sectors such as technology, which constitutes 35% of its assets, financial services at 13%, and consumer cyclical at 11%. With major investments in industry leaders like Apple, Nvidia, and Microsoft, VTI stands out for those prioritizing broad market representation.
Conversely, ITOT comprises 2,498 holdings, which, while still significant, presents slightly less diversification than VTI. The ETF manages a comparable sector allocation, with technology at 34%, financial services at 13%, and consumer cyclical at 10%. The largest positions in ITOT mirror those of VTI, focusing on well-established companies while maintaining a straightforward investment strategy without leverage, currency hedging, or ESG screens.
Both ETFs exhibit remarkable similarities in terms of performance metrics such as beta and maximum drawdown, with each fund clocking in at a beta of 1.04 and experiencing almost identical drawdowns over the past five years. They have shown comparable levels of risk and volatility in their price movements.
Ultimately, the choice between ITOT and VTI may hinge on two main factors for prospective investors: the need for enhanced diversification and liquidity. Those who prioritize a broader portfolio with more stocks may lean towards VTI, while investors seeking a solid total market ETF without a significant preference for one specific fund may find both options essentially equivalent.
As both funds continue to thrive in a competitive market, they represent reliable pathways for investors aiming for exposure to the comprehensive U.S. stock market.

