VOO vs. AJG
VOO (Vanguard S&P 500 ETF) is S&P 500 fund tracking the S&P 500 Index, while AJG (Arthur J. Gallagher & Co.) is a stock. Over the past 10 years, VOO returned 14.98%/yr vs 19.74%/yr for AJG. A 0.53 correlation means they provide meaningful diversification when combined.
Performance
VOO vs. AJG - Performance Comparison
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Returns By Period
In the year-to-date period, VOO achieves a 9.44% return, which is significantly higher than AJG's -1.36% return. Over the past 10 years, VOO has underperformed AJG with an annualized return of 14.98%, while AJG has yielded a comparatively higher 19.74% annualized return.
VOO
- 1D
- -0.14%
- 1M
- -0.57%
- 6M
- 7.90%
- YTD
- 9.44%
- 1Y
- 19.65%
- 3Y*
- 19.52%
- 5Y*
- 12.88%
- 10Y*
- 14.98%
- ALL TIME*
- 14.77%
AJG
- 1D
- -0.09%
- 1M
- 18.50%
- 6M
- -1.25%
- YTD
- -1.36%
- 1Y
- -18.08%
- 3Y*
- 6.09%
- 5Y*
- 13.67%
- 10Y*
- 19.74%
- ALL TIME*
- 12.61%
VOO vs. AJG - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
VOO Vanguard S&P 500 ETF | 9.44% | 17.82% | 24.98% | 26.32% | -18.17% | 28.79% | 18.32% | 31.37% | -4.50% | 21.77% |
AJG Arthur J. Gallagher & Co. | -1.36% | -8.03% | 27.34% | 20.51% | 12.44% | 39.02% | 32.12% | 31.79% | 19.19% | 25.04% |
Correlation
The correlation between VOO and AJG is -0.10, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | -0.10 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.13 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.36 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.46 |
Correlation (All Time) Calculated using the full available price history since Sep 9, 2010 | 0.53 |
The correlation between VOO and AJG shifts across timeframes, from -0.10 (1 year) to 0.53 (all time), reflecting how their relationship changes across market environments.
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Return for Risk
VOO vs. AJG — Risk / Return Rank
VOO
AJG
VOO vs. AJG - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Vanguard S&P 500 ETF (VOO) and Arthur J. Gallagher & Co. (AJG). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| VOO | AJG | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +2.18 | ||
| Sortino ratioReturn per unit of downside risk | +2.88 | ||
| Omega ratioGain probability vs. loss probability | 1.28 | 0.91 | +0.37 |
| Calmar ratioReturn relative to maximum drawdown | 2.22 | -0.47 | +2.69 |
| Martin ratioReturn relative to average drawdown | 9.63 | -0.79 | +10.42 |
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Drawdowns
VOO vs. AJG - Drawdown Comparison
The maximum VOO drawdown since its inception was -33.99%, smaller than the maximum AJG drawdown of -57.49%. Use the drawdown chart below to compare losses from any high point for VOO and AJG.
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Drawdown Indicators
| VOO | AJG | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -33.99% | -57.49% | +23.50% |
Max Drawdown (1Y)Largest decline over 1 year | -8.90% | -38.59% | +29.69% |
Max Drawdown (3Y)Largest decline over 3 years | -18.69% | -44.40% | +25.71% |
Max Drawdown (5Y)Largest decline over 5 years | -24.52% | -44.40% | +19.88% |
Max Drawdown (10Y)Largest decline over 10 years | -33.99% | -44.40% | +10.41% |
Current DrawdownCurrent decline from peak | -2.01% | -26.31% | +24.30% |
Average DrawdownAverage peak-to-trough decline | -3.67% | -12.87% | +9.20% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.04% | 23.05% | -21.01% |
Volatility
VOO vs. AJG - Volatility Comparison
The current volatility for Vanguard S&P 500 ETF (VOO) is 3.36%, while Arthur J. Gallagher & Co. (AJG) has a volatility of 10.92%. This indicates that VOO experiences smaller price fluctuations and is considered to be less risky than AJG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| VOO | AJG | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 3.36% | 10.92% | -7.56% |
Volatility (6M)Calculated over the trailing 6-month period | 10.02% | 24.11% | -14.09% |
Volatility (1Y)Calculated over the trailing 1-year period | 12.58% | 29.72% | -17.14% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 16.91% | 23.42% | -6.51% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 18.00% | 23.24% | -5.24% |
Dividends
VOO vs. AJG - Dividend Comparison
VOO's dividend yield for the trailing twelve months is around 1.08%, more than AJG's 1.06% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AJG Arthur J. Gallagher & Co. | 1.06% | 1.00% | 0.85% | 0.98% | 1.08% | 1.13% | 1.46% | 1.81% | 2.23% | 2.47% | 2.93% | 3.62% |
VOO Vanguard S&P 500 ETF | 1.08% | 1.13% | 1.24% | 1.46% | 1.69% | 1.25% | 1.54% | 1.88% | 2.06% | 1.78% | 2.02% | 2.10% |
Frequently Asked Questions
VOO and AJG have a correlation of -0.10, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
AJG has higher volatility (10.92%) compared to VOO (3.36%). In terms of maximum drawdown, VOO dropped -33.99% vs AJG's -57.49%.
VOO currently has the higher Sharpe Ratio (1.57 vs -0.61), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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