Compare/Updated Oct 26, 2026, refreshed every trading day
IVV vs VOO
iShares Core S&P 500 ETF against Vanguard S&P 500 ETF: 4 years of returns, risk and today’s technical read, from Kavout’s own data.
VOO did marginally better over the period: $1,000 invested on October 28, 2022 grew to $2,065, versus $2,064 for IVV, producing total returns of 106.5% and 106.4%, respectively. VOO also led over three years, 83.6% versus 83.5%, while the funds were otherwise essentially tied across the reported periods. The difference is economically negligible: both have a 0.03% expense ratio, 12.7% trailing 12-month volatility, and nearly identical daily performance, with a 0.999 correlation. IVV’s worst drawdown was -18.8%, compared with -18.7% for VOO. IVV won 25 of the last 48 months, while VOO won 23, with a typical monthly gap of only 0.03 percentage points. VOO was the slight historical winner, but neither fund demonstrated a meaningful performance or risk advantage.
- Price is above its 200-day average ($727); 50-day at $770.
- RSI 42, neutral. Supertrend says sell. ADX 14, so the trend is weak.
- 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, IVV or VOO?
IVV beat VOO in 25 of the last 48 months; VOO won the other 23. The typical monthly gap was 0.03 points.
Total return by period
Which is riskier?
Both: Feb 19, 2025 to Apr 8, 2025
- 0.999
- correlation of daily moves, 4 years
- 1.00
- IVV move per 1% in VOO
- 0.999
- correlation, last 12 months
Month by month
Of the last 48 months. The typical gap was 0.03 points.
When did they diverge?
| Month | IVV | VOO | Gap |
|---|---|---|---|
| June 2026 | -1.2% | -1.0% | -0.24 pts |
| July 2026 | +0.2% | -0.0% | +0.21 pts |
| May 2025 | +6.1% | +6.3% | -0.15 pts |
| April 2025 | -0.7% | -0.8% | +0.11 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 IVV and VOO?
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