AOR vs. VOO

Last updated Jun 3, 2026

AOR (iShares Core Growth Allocation ETF) and VOO (Vanguard S&P 500 ETF) are both exchange-traded funds - AOR is a Diversified Portfolio fund tracking the S&P Target Risk Growth Index, while VOO is a S&P 500 fund tracking the S&P 500 Index. Both are passively managed. Over the past 10 years, AOR returned 8.46%/yr vs 15.65%/yr for VOO. Their correlation of 0.92 suggests significant overlap in exposure. AOR charges 0.25%/yr vs 0.03%/yr for VOO.

Performance

AOR vs. VOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Core Growth Allocation ETF (AOR) and Vanguard S&P 500 ETF (VOO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, AOR achieves a 7.96% return, which is significantly lower than VOO's 11.69% return. Over the past 10 years, AOR has underperformed VOO with an annualized return of 8.46%, while VOO has yielded a comparatively higher 15.65% annualized return.

AOR

• 1D: 0.22%
• 1M: 3.07%
• YTD: 7.96%
• 6M: 8.80%
• 1Y: 20.12%
• 3Y*: 14.41%
• 5Y*: 7.20%
• 10Y*: 8.46%

VOO

• 1D: 0.14%
• 1M: 5.39%
• YTD: 11.69%
• 6M: 12.11%
• 1Y: 29.68%
• 3Y*: 22.73%
• 5Y*: 14.26%
• 10Y*: 15.65%

*Multi-year figures are annualized to reflect compound growth (CAGR)

AOR vs. VOO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
AOR iShares Core Growth Allocation ETF	7.96%	16.44%	10.68%	15.75%	-15.64%	11.19%	11.42%	18.91%	-5.82%	15.80%
VOO Vanguard S&P 500 ETF	11.69%	17.82%	24.98%	26.32%	-18.17%	28.79%	18.32%	31.37%	-4.50%	21.77%

Correlation

The correlation between AOR and VOO is 0.92, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.92
Correlation (3Y) Calculated over the trailing 3-year period	0.91
Correlation (5Y) Calculated over the trailing 5-year period	0.91
Correlation (10Y) Calculated over the trailing 10-year period	0.91
Correlation (All Time) Calculated using the full available price history since Sep 10, 2010	0.92

The correlation between AOR and VOO has been stable across timeframes, ranging from 0.91 to 0.92 - a consistent structural relationship.

AOR vs. VOO - Sectors Allocation Comparison

Sectors	AOR	VOO
Technology	27.8%	35.7%
Financial Services	16.2%	11.6%
Industrials	11.9%	8.3%
Consumer Cyclical	9.5%	10.2%
Communication Services	8.1%	11.3%
Healthcare	8.0%	8.5%
Consumer Defensive	5.0%	4.9%
Energy	4.3%	3.5%
Basic Materials	4.2%	1.8%
Utilities	2.7%	2.4%
Real Estate	2.4%	1.9%

Return for Risk

AOR vs. VOO — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

AOR

AOR Risk / Return Rank: 71
AOR Sharpe Ratio Rank: 73
AOR Sortino Ratio Rank: 75
AOR Omega Ratio Rank: 75
AOR Calmar Ratio Rank: 61
AOR Martin Ratio Rank: 71

VOO

VOO Risk / Return Rank: 75
VOO Sharpe Ratio Rank: 77
VOO Sortino Ratio Rank: 75
VOO Omega Ratio Rank: 76
VOO Calmar Ratio Rank: 68
VOO Martin Ratio Rank: 80

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

AOR vs. VOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Core Growth Allocation ETF (AOR) and Vanguard S&P 500 ETF (VOO). 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.

	AOR	VOO	Difference
Sharpe ratio Return per unit of total volatility	2.41	2.53	-0.13
Sortino ratio Return per unit of downside risk	3.43	3.43	0.00
Omega ratio Gain probability vs. loss probability	1.45	1.46	-0.01
Calmar ratio Return relative to maximum drawdown	3.08	3.42	-0.34
Martin ratio Return relative to average drawdown	13.48	15.95	-2.46
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AOR vs. VOO - Sharpe Ratio Comparison

The current AOR Sharpe Ratio is 2.41, which is comparable to the VOO Sharpe Ratio of 2.53. The chart below compares the historical Sharpe Ratios of AOR and VOO, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	AOR	VOO	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.41	2.53	-0.13
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.69	0.85	-0.17
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.80	0.87	-0.08
Sharpe Ratio (All Time) Calculated using the full available price history	0.69	0.89	-0.20

Drawdowns

AOR vs. VOO - Drawdown Comparison

The maximum AOR drawdown since its inception was -24.44%, smaller than the maximum VOO drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for AOR and VOO.

Drawdown Indicators

	AOR	VOO	Difference
Max Drawdown Largest peak-to-trough decline	-24.44%	-33.99%	+9.55%
Max Drawdown (1Y) Largest decline over 1 year	-6.64%	-8.90%	+2.26%
Max Drawdown (3Y) Largest decline over 3 years	-9.77%	-18.69%	+8.92%
Max Drawdown (5Y) Largest decline over 5 years	-21.72%	-24.52%	+2.80%
Max Drawdown (10Y) Largest decline over 10 years	-22.95%	-33.99%	+11.04%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-3.48%	-3.69%	+0.21%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.52%	1.91%	-0.39%

Volatility

AOR vs. VOO - Volatility Comparison

iShares Core Growth Allocation ETF (AOR) and Vanguard S&P 500 ETF (VOO) have volatilities of 2.70% and 2.74%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AOR	VOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.70%	2.74%	-0.04%
Volatility (6M) Calculated over the trailing 6-month period	6.81%	8.88%	-2.07%
Volatility (1Y) Calculated over the trailing 1-year period	8.40%	11.78%	-3.38%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	10.55%	16.81%	-6.26%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	10.67%	18.01%	-7.34%

AOR vs. VOO - Expense Ratio Comparison

AOR has a 0.25% expense ratio, which is higher than VOO's 0.03% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

AOR vs. VOO - Dividend Comparison

AOR's dividend yield for the trailing twelve months is around 2.46%, more than VOO's 1.02% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AOR iShares Core Growth Allocation ETF	2.46%	2.55%	2.66%	2.50%	2.12%	1.64%	1.89%	2.56%	2.49%	4.51%	2.16%	2.12%
VOO Vanguard S&P 500 ETF	1.02%	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

Can I hold both AOR and VOO in my portfolio?

With a correlation of 0.92, AOR and VOO move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, AOR or VOO?

VOO has higher volatility (2.74%) compared to AOR (2.70%). In terms of maximum drawdown, AOR dropped -24.44% vs VOO's -33.99%.

Which ETF is better, AOR or VOO?

On 10-year performance, VOO leads with 15.65% vs 8.46% for AOR. On fees, VOO is cheaper at 0.03% per year. Their volatility is very similar. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, AOR or VOO?

Over the 10-year period, VOO has performed better with a 15.65% return vs 8.46%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, AOR or VOO?

VOO is cheaper with a 0.03% expense ratio, compared with 0.25% for AOR.

Which ETF pays a higher dividend yield, AOR or VOO?

AOR has the higher dividend yield at 2.46%, compared with 1.02% for VOO.

What is the main difference between AOR and VOO?

AOR is categorized as Diversified Portfolio, while VOO is S&P 500. AOR tracks S&P Target Risk Growth Index, while VOO tracks S&P 500 Index. They also come from different issuers: iShares and Vanguard. Their fees differ too: 0.25% for AOR and 0.03% for VOO.

Which has better risk-adjusted returns?

VOO currently has the higher Sharpe Ratio (2.53 vs 2.41), 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.