Compare/Updated Oct 26, 2026, refreshed every trading day
VFIAX vs VOO
Vanguard 500 Index Fd Admiral Shs 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 period: $1,000 invested on October 28, 2022 would be worth $2,065 versus $2,063 in VFIAX, for total returns of 106.5% and 106.3%, respectively. The difference is immaterial in practical terms, reflecting their nearly identical portfolios and 0.999 correlation of daily moves. VOO also had marginally lower 12-month volatility, 12.7% versus 12.8%, and a slightly less severe worst drawdown, -18.7% versus -18.8%; both experienced that drawdown from February 19, 2025 to April 8, 2025. VOO won 27 of the last 48 months, while VFIAX won 21, with a typical monthly gap of only 0.05 percentage points. VOO’s 0.03% expense ratio may help explain its narrow edge, but the performance and risk differences are negligible.
- 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, VFIAX or VOO?
VFIAX beat VOO in 21 of the last 48 months; VOO won the other 27. 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
- VFIAX 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 | VFIAX | VOO | Gap |
|---|---|---|---|
| April 2025 | -0.7% | -0.8% | +0.13 pts |
| February 2024 | +5.3% | +5.2% | +0.13 pts |
| September 2025 | +3.6% | +3.5% | +0.10 pts |
| June 2023 | +6.6% | +6.5% | +0.10 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 VFIAX and VOO?
- Price
- $703.82
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