Vanguard S&P 500 ETF (VOO) vs Vanguard Total Stock Market ETF (VTI)

VTI wins — VTI and VOO are functionally equivalent for most investors — same expense ratio, nearly identical 10-year returns, and b…

Scores: Vanguard S&P 500 ETF (VOO) 9/10 · Vanguard Total Stock Market ETF (VTI) 9/10

VTI and VOO are functionally equivalent for most investors — same expense ratio, nearly identical 10-year returns, and both from Vanguard. VTI edges it out for long-term buy-and-hold investors because the small-cap diversification costs nothing and provides theoretical upside over 20-30 year time horizons. Either is an excellent choice.

Vanguard S&P 500 ETF (VOO) lists at $530 while Vanguard Total Stock Market ETF (VTI) lists at $274 — Vanguard Total Stock Market ETF (VTI) undercuts Vanguard S&P 500 ETF (VOO) by $256 (93%).

Spec-by-spec comparison

	Vanguard S&P 500 ETF (VOO)	Vanguard Total Stock Market ETF (VTI)
index	S&P 500 — 503 large-cap US companies	CRSP US Total Market — ~3,700 US companies
expense_ratio	0.03%	0.03%
holdings	~503 stocks	~3,700 stocks
market_cap_exposure	Large-cap only (>$14.6B market cap threshold)	Large, mid, and small-cap
dividend_yield	~1.3% trailing 12 months	~1.3% trailing 12 months
10yr_annualized_return	~13.1% (as of 2025)	~13.0% (as of 2025)

Vanguard S&P 500 ETF (VOO)

What works

S&P 500's 503 holdings are the most liquid US stocks — index composition is determined by a committee, filtering out low-quality additions
0.03% expense ratio makes it one of the cheapest investment vehicles that exists — $30/year on $100K invested
Benchmark status: virtually all professional performance is measured against the S&P 500, making VOO the cleanest comparison baseline

What doesn't

Excludes ~3,500 small and mid-cap stocks — missing the long-run small-cap premium documented by Fama-French
Top 10 holdings are 33% of the fund — heavily concentrated in mega-cap tech
Committee-selected index means slightly less mechanical and more arbitrary inclusion criteria than VTI's rules-based CRSP index

Vanguard Total Stock Market ETF (VTI)

What works

3,700 holdings captures 99% of US market cap — true total market exposure including small and micro-cap companies
Same 0.03% expense ratio as VOO — zero cost penalty for additional diversification
Small-cap exposure provides theoretical access to the Fama-French small-cap premium over 30+ year holding periods

What doesn't

10-year returns are nearly identical to VOO — small-cap premium has underperformed in 2015-2025 period
3,700 holdings include many small companies with minimal liquidity — in practice, VOO's holdings drive >95% of returns
Slightly less recognized than S&P 500 for performance conversations and benchmarking purposes

Bottom line

Our pick: Vanguard Total Stock Market ETF (VTI). It edges out the alternative on 3,700 holdings captures 99% of us market cap — true total market exposure including small and micro-cap companies. That said, Vanguard S&P 500 ETF (VOO) still wins on s&p 500's 503 holdings are the most liquid us stocks — index composition is determined by a committee, filtering out low-quality additions — consider it if that single trade matters most for your use.

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