AAUS vs. VOO

Last updated Jun 4, 2026

AAUS (Alpha Architect US Equity ETF) and VOO (Vanguard S&P 500 ETF) are both exchange-traded funds - AAUS is a Large Cap Blend Equities fund actively managed by Alpha Architect, while VOO is a S&P 500 fund tracking the S&P 500 Index. AAUS is actively managed, while VOO is passively managed. With a 0.98 correlation, they move nearly in lockstep. AAUS charges 0.15%/yr vs 0.03%/yr for VOO.

Performance

AAUS vs. VOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Alpha Architect US Equity ETF (AAUS) 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, AAUS achieves a 9.48% return, which is significantly lower than VOO's 10.91% return.

AAUS

• 1D: -0.74%
• 1M: 4.93%
• YTD: 9.48%
• 6M: 9.33%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

VOO

• 1D: -0.70%
• 1M: 5.04%
• YTD: 10.91%
• 6M: 10.93%
• 1Y: 28.04%
• 3Y*: 22.44%
• 5Y*: 13.90%
• 10Y*: 15.56%

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

AAUS vs. VOO - Yearly Performance Comparison

	2026 (YTD)	2025
AAUS Alpha Architect US Equity ETF	9.48%	9.66%
VOO Vanguard S&P 500 ETF	10.91%	8.21%

Correlation

The correlation between AAUS and VOO is 0.98 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (All Time) Calculated using the full available price history since Jul 24, 2025	0.98

Return for Risk

AAUS vs. VOO — Risk / Return Rank

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

VOO

VOO Risk / Return Rank: 70
VOO Sharpe Ratio Rank: 71
VOO Sortino Ratio Rank: 70
VOO Omega Ratio Rank: 70
VOO Calmar Ratio Rank: 62
VOO Martin Ratio Rank: 75

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.

AAUS vs. VOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Alpha Architect US Equity ETF (AAUS) 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Sharpe Ratios by Period

	AAUS	VOO	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	2.39	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.83	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.87	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.90	0.89	+1.02

Drawdowns

AAUS vs. VOO - Drawdown Comparison

The maximum AAUS drawdown since its inception was -9.13%, smaller than the maximum VOO drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for AAUS and VOO.

Drawdown Indicators

	AAUS	VOO	Difference
Max Drawdown Largest peak-to-trough decline	-9.13%	-33.99%	+24.86%
Max Drawdown (1Y) Largest decline over 1 year	—	-8.90%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-18.69%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-24.52%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-33.99%	—
Current Drawdown Current decline from peak	-0.74%	-0.70%	-0.04%
Average Drawdown Average peak-to-trough decline	-1.31%	-3.69%	+2.38%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	1.91%	—

Volatility

Volatility by Period

	AAUS	VOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	2.84%	—
Volatility (6M) Calculated over the trailing 6-month period	—	8.90%	—
Volatility (1Y) Calculated over the trailing 1-year period	12.45%	11.80%	+0.65%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	12.45%	16.81%	-4.36%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	12.45%	18.01%	-5.56%

AAUS vs. VOO - Expense Ratio Comparison

AAUS has a 0.15% 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

AAUS vs. VOO - Dividend Comparison

AAUS's dividend yield for the trailing twelve months is around 0.34%, less than VOO's 1.03% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AAUS Alpha Architect US Equity ETF	0.34%	0.37%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
VOO Vanguard S&P 500 ETF	1.03%	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 AAUS and VOO in my portfolio?

With a correlation of 0.98, AAUS 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 ETF is better, AAUS or VOO?

On fees, VOO is cheaper at 0.03% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, AAUS or VOO?

VOO is cheaper with a 0.03% expense ratio, compared with 0.15% for AAUS.

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

VOO has the higher dividend yield at 1.03%, compared with 0.34% for AAUS.

What is the main difference between AAUS and VOO?

AAUS is categorized as Large Cap Blend Equities, while VOO is S&P 500. They also come from different issuers: Alpha Architect and Vanguard. Their fees differ too: 0.15% for AAUS and 0.03% for VOO.