Compare/Updated Oct 26, 2026, refreshed every trading day
VINIX vs VOO
Vanguard Institutional Index Fund Institutional Shares 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 than VINIX over the 1,000-trading-day period: $1,000 grew to $2,065 versus $2,057, for returns of 106.5% and 105.7%, respectively. VOO also led across the listed 1-month, 3-month, 6-month, YTD, 1-year, and 3-year periods, although the differences were small. The funds were nearly identical in behavior, with 0.999 correlation and a typical monthly performance gap of only 0.05 percentage points. VOO had slightly lower 12-month volatility, 12.7% versus 12.8%, and a marginally smaller worst drawdown, -18.7% versus -18.8%. VINIX outperformed in 21 of the last 48 months, but VOO won 27. Overall, VOO’s modest edge indicates that both delivered essentially the same S&P 500 exposure, with VOO holding a narrow performance advantage.
- 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, VINIX or VOO?
VINIX 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
- VINIX move per 1% in VOO
- 0.997
- correlation, last 12 months
Month by month
Of the last 48 months. The typical gap was 0.05 points.
When did they diverge?
| Month | VINIX | VOO | Gap |
|---|---|---|---|
| September 2026 | -0.6% | -0.3% | -0.29 pts |
| 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 |
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 VINIX and VOO?
- Price
- $610.51
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