AAATX vs. DRIKX

Last updated Jun 4, 2026

AAATX (American Funds 2010 Target Date Retirement Fund) and DRIKX (Dimensional 2055 Target Date Retirement Income Fund) are both Target Retirement Date funds. Over the past 10 years, AAATX returned 6.22%/yr vs 12.56%/yr for DRIKX. Their correlation of 0.87 suggests significant overlap in exposure. AAATX charges 0.34%/yr vs 0.22%/yr for DRIKX.

Performance

AAATX vs. DRIKX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds 2010 Target Date Retirement Fund (AAATX) and Dimensional 2055 Target Date Retirement Income Fund (DRIKX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, AAATX achieves a 3.92% return, which is significantly lower than DRIKX's 11.99% return. Over the past 10 years, AAATX has underperformed DRIKX with an annualized return of 6.22%, while DRIKX has yielded a comparatively higher 12.56% annualized return.

AAATX

• 1D: 0.16%
• 1M: 1.35%
• YTD: 3.92%
• 6M: 4.30%
• 1Y: 11.67%
• 3Y*: 10.12%
• 5Y*: 5.11%
• 10Y*: 6.22%

DRIKX

• 1D: 0.27%
• 1M: 4.23%
• YTD: 11.99%
• 6M: 13.14%
• 1Y: 28.07%
• 3Y*: 20.20%
• 5Y*: 11.51%
• 10Y*: 12.56%

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

AAATX vs. DRIKX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
AAATX American Funds 2010 Target Date Retirement Fund	3.92%	12.73%	7.83%	8.44%	-9.50%	9.02%	8.84%	13.51%	-2.85%	9.97%
DRIKX Dimensional 2055 Target Date Retirement Income Fund	11.99%	19.29%	17.19%	21.26%	-15.32%	21.28%	14.20%	25.63%	-9.16%	21.59%

Correlation

The correlation between AAATX and DRIKX is 0.76, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.76
Correlation (3Y) Calculated over the trailing 3-year period	0.82
Correlation (5Y) Calculated over the trailing 5-year period	0.85
Correlation (10Y) Calculated over the trailing 10-year period	0.87
Correlation (All Time) Calculated using the full available price history since Jan 5, 2016	0.87

The correlation between AAATX and DRIKX shifts across timeframes, from 0.76 (1 year) to 0.87 (all time), reflecting how their relationship changes across market environments.

Return for Risk

AAATX vs. DRIKX — Risk / Return Rank

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

AAATX

AAATX Risk / Return Rank: 66
AAATX Sharpe Ratio Rank: 73
AAATX Sortino Ratio Rank: 75
AAATX Omega Ratio Rank: 73
AAATX Calmar Ratio Rank: 50
AAATX Martin Ratio Rank: 57

DRIKX

DRIKX Risk / Return Rank: 85
DRIKX Sharpe Ratio Rank: 87
DRIKX Sortino Ratio Rank: 84
DRIKX Omega Ratio Rank: 78
DRIKX Calmar Ratio Rank: 87
DRIKX Martin Ratio Rank: 92

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.

AAATX vs. DRIKX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds 2010 Target Date Retirement Fund (AAATX) and Dimensional 2055 Target Date Retirement Income Fund (DRIKX). 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.

	AAATX	DRIKX	Difference
Sharpe ratio Return per unit of total volatility	2.48	2.83	-0.35
Sortino ratio Return per unit of downside risk	3.61	3.96	-0.35
Omega ratio Gain probability vs. loss probability	1.48	1.51	-0.03
Calmar ratio Return relative to maximum drawdown	2.69	4.20	-1.51
Martin ratio Return relative to average drawdown	11.52	19.10	-7.58
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AAATX vs. DRIKX - Sharpe Ratio Comparison

The current AAATX Sharpe Ratio is 2.48, which is comparable to the DRIKX Sharpe Ratio of 2.83. The chart below compares the historical Sharpe Ratios of AAATX and DRIKX, 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

	AAATX	DRIKX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.48	2.83	-0.35
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.79	0.79	-0.01
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.93	0.81	+0.13
Sharpe Ratio (All Time) Calculated using the full available price history	0.56	0.81	-0.25

Drawdowns

AAATX vs. DRIKX - Drawdown Comparison

The maximum AAATX drawdown since its inception was -40.44%, which is greater than DRIKX's maximum drawdown of -33.48%. Use the drawdown chart below to compare losses from any high point for AAATX and DRIKX.

Drawdown Indicators

	AAATX	DRIKX	Difference
Max Drawdown Largest peak-to-trough decline	-40.44%	-33.48%	-6.96%
Max Drawdown (1Y) Largest decline over 1 year	-4.42%	-8.59%	+4.17%
Max Drawdown (3Y) Largest decline over 3 years	-5.57%	-16.02%	+10.45%
Max Drawdown (5Y) Largest decline over 5 years	-14.99%	-23.49%	+8.50%
Max Drawdown (10Y) Largest decline over 10 years	-15.13%	-33.48%	+18.35%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-4.35%	-4.25%	-0.10%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.03%	1.89%	-0.86%

Volatility

AAATX vs. DRIKX - Volatility Comparison

The current volatility for American Funds 2010 Target Date Retirement Fund (AAATX) is 1.54%, while Dimensional 2055 Target Date Retirement Income Fund (DRIKX) has a volatility of 3.11%. This indicates that AAATX experiences smaller price fluctuations and is considered to be less risky than DRIKX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AAATX	DRIKX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.54%	3.11%	-1.57%
Volatility (6M) Calculated over the trailing 6-month period	3.83%	8.71%	-4.88%
Volatility (1Y) Calculated over the trailing 1-year period	4.80%	11.22%	-6.42%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.53%	14.83%	-8.30%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	6.68%	15.75%	-9.07%

AAATX vs. DRIKX - Expense Ratio Comparison

AAATX has a 0.34% expense ratio, which is higher than DRIKX's 0.22% expense ratio.

Dividends

AAATX vs. DRIKX - Dividend Comparison

AAATX's dividend yield for the trailing twelve months is around 6.58%, more than DRIKX's 1.32% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AAATX American Funds 2010 Target Date Retirement Fund	6.58%	6.84%	5.16%	3.53%	3.41%	3.78%	3.72%	3.48%	3.79%	2.51%	2.67%	4.60%
DRIKX Dimensional 2055 Target Date Retirement Income Fund	1.32%	1.24%	2.44%	3.19%	3.92%	2.37%	2.41%	2.12%	2.27%	1.18%	1.39%	0.00%

Frequently Asked Questions

Can I hold both AAATX and DRIKX in my portfolio?

AAATX and DRIKX have a correlation of 0.76, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, AAATX or DRIKX?

DRIKX has higher volatility (3.11%) compared to AAATX (1.54%). In terms of maximum drawdown, AAATX dropped -40.44% vs DRIKX's -33.48%.

Which has better risk-adjusted returns?

DRIKX currently has the higher Sharpe Ratio (2.83 vs 2.48), 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.