Compare/Updated Oct 26, 2026, refreshed every trading day
VFINX vs VOO
Vanguard 500 Index Fund against Vanguard S&P 500 ETF: 4 years of returns, risk and today’s technical read, from Kavout’s own data.
VOO did slightly better over the 1,000-trading-day period: $1,000 grew to $2,065 versus $2,054 for VFINX, a 106.5% versus 105.4% total return. VOO also led over 1 month, 6 months, YTD, 1 year, and 3 years, while matching VFINX over 3 months. Its advantage likely reflects its 0.03% expense ratio and ETF structure. The difference was economically small: VOO won 28 of the last 48 months, with a typical monthly gap of just 0.05 percentage points, while daily correlation was 0.999. Risk was nearly identical: VOO’s 12-month volatility was 12.7% versus 12.8% for VFINX, and its worst drawdown was -18.7% versus -18.8%, both from February 19, 2025 to April 8, 2025. VOO was the marginal winner, not a materially different investment outcome.
- Technical indicators are not available for this ticker yet.
- Price is above its 200-day average ($665); 50-day at $705.
- RSI 42, neutral. Supertrend says sell. ADX 14, so the trend is weak.
Head to head
Which has returned more, VFINX or VOO?
VFINX beat VOO in 20 of the last 48 months; VOO won the other 28. The typical monthly gap was 0.05 points.
Total return by period
Which is riskier?
Both: Feb 19, 2025 to Apr 8, 2025
- 0.999
- correlation of daily moves, 4 years
- 1.01
- VFINX move per 1% in VOO
- 0.998
- correlation, last 12 months
Month by month
Of the last 48 months. The typical gap was 0.05 points.
When did they diverge?
| Month | VFINX | VOO | Gap |
|---|---|---|---|
| April 2025 | -0.7% | -0.8% | +0.12 pts |
| February 2024 | +5.3% | +5.2% | +0.12 pts |
| June 2025 | +5.1% | +5.2% | -0.10 pts |
| September 2025 | +3.6% | +3.5% | +0.09 pts |
Where the numbers come from. 1000 daily adjusted closes per fund from the Kavout market-data API, dividends included. Signals and indicators are Kavout’s own, refreshed nightly. Every figure is calculated from those adjusted closes.
Holdings and fees
What do you actually own with VFINX and VOO?
- Price
- $703.93
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