DRIKX vs. AAATX

Last updated Jun 23, 2026

DRIKX (Dimensional 2055 Target Date Retirement Income Fund) and AAATX (American Funds 2010 Target Date Retirement Fund) are both Target Retirement Date funds. Over the past 10 years, DRIKX returned 12.61%/yr vs 6.17%/yr for AAATX. Their correlation of 0.87 suggests significant overlap in exposure. DRIKX charges 0.22%/yr vs 0.34%/yr for AAATX.

Performance

DRIKX vs. AAATX - Performance Comparison

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

Returns By Period

In the year-to-date period, DRIKX achieves a 11.64% return, which is significantly higher than AAATX's 3.68% return. Over the past 10 years, DRIKX has outperformed AAATX with an annualized return of 12.61%, while AAATX has yielded a comparatively lower 6.17% annualized return.

DRIKX

• 1D: 1.03%
• 1M: 1.23%
• YTD: 11.64%
• 6M: 11.35%
• 1Y: 26.86%
• 3Y*: 18.91%
• 5Y*: 11.86%
• 10Y*: 12.61%

AAATX

• 1D: 0.16%
• 1M: 0.40%
• YTD: 3.68%
• 6M: 3.81%
• 1Y: 10.86%
• 3Y*: 9.70%
• 5Y*: 5.24%
• 10Y*: 6.17%

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

DRIKX vs. AAATX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
DRIKX Dimensional 2055 Target Date Retirement Income Fund	11.64%	19.29%	17.19%	21.26%	-15.32%	21.28%	14.20%	25.63%	-9.16%	21.59%
AAATX American Funds 2010 Target Date Retirement Fund	3.68%	12.73%	7.83%	8.44%	-9.50%	9.02%	8.84%	13.51%	-2.85%	9.97%

Correlation

The correlation between DRIKX and AAATX is 0.78, 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	0.78
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 4, 2016	0.87

The correlation between DRIKX and AAATX has been stable across timeframes, ranging from 0.78 to 0.87 - a consistent structural relationship.

Return for Risk

DRIKX vs. AAATX — Risk / Return Rank

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

DRIKX

DRIKX Risk / Return Rank: 80
DRIKX Sharpe Ratio Rank: 82
DRIKX Sortino Ratio Rank: 78
DRIKX Omega Ratio Rank: 75
DRIKX Calmar Ratio Rank: 79
DRIKX Martin Ratio Rank: 84

AAATX

AAATX Risk / Return Rank: 61
AAATX Sharpe Ratio Rank: 66
AAATX Sortino Ratio Rank: 69
AAATX Omega Ratio Rank: 69
AAATX Calmar Ratio Rank: 46
AAATX Martin Ratio Rank: 55

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.

DRIKX vs. AAATX - Risk-Adjusted Trends Comparison

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

	DRIKX	AAATX	Difference
Sharpe ratio: Return per unit of total volatility	2.47	2.18	+0.29
Sortino ratio: Return per unit of downside risk	3.40	3.15	+0.25
Omega ratio: Gain probability vs. loss probability	1.45	1.42	+0.03
Calmar ratio: Return relative to maximum drawdown	3.42	2.47	+0.95
Martin ratio: Return relative to average drawdown	14.63	10.49	+4.14

DRIKX vs. AAATX - Sharpe Ratio Comparison

The current DRIKX Sharpe Ratio is 2.47, which is comparable to the AAATX Sharpe Ratio of 2.18. The chart below compares the historical Sharpe Ratios of DRIKX and AAATX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

DRIKX vs. AAATX - Drawdown Comparison

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

Drawdown Indicators

	DRIKX	AAATX	Difference
Max Drawdown Largest peak-to-trough decline	-33.48%	-40.44%	+6.96%
Max Drawdown (1Y) Largest decline over 1 year	-8.59%	-4.42%	-4.17%
Max Drawdown (3Y) Largest decline over 3 years	-16.02%	-5.57%	-10.45%
Max Drawdown (5Y) Largest decline over 5 years	-23.49%	-14.99%	-8.50%
Max Drawdown (10Y) Largest decline over 10 years	-33.48%	-15.13%	-18.35%
Current Drawdown Current decline from peak	-0.66%	-0.47%	-0.19%
Average Drawdown Average peak-to-trough decline	-4.23%	-4.34%	+0.11%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.94%	1.04%	+0.90%

Volatility

DRIKX vs. AAATX - Volatility Comparison

Dimensional 2055 Target Date Retirement Income Fund (DRIKX) has a higher volatility of 4.57% compared to American Funds 2010 Target Date Retirement Fund (AAATX) at 1.80%. This indicates that DRIKX's price experiences larger fluctuations and is considered to be riskier than AAATX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DRIKX	AAATX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.57%	1.80%	+2.77%
Volatility (6M) Calculated over the trailing 6-month period	9.57%	4.04%	+5.53%
Volatility (1Y) Calculated over the trailing 1-year period	11.88%	5.00%	+6.88%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	14.92%	6.55%	+8.37%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.78%	6.69%	+9.09%

DRIKX vs. AAATX - Expense Ratio Comparison

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

Dividends

DRIKX vs. AAATX - Dividend Comparison

DRIKX's dividend yield for the trailing twelve months is around 1.32%, less than AAATX's 6.60% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AAATX American Funds 2010 Target Date Retirement Fund	6.60%	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 DRIKX and AAATX in my portfolio?

DRIKX and AAATX have a correlation of 0.78, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, DRIKX or AAATX?

DRIKX has higher volatility (4.57%) compared to AAATX (1.80%). In terms of maximum drawdown, DRIKX dropped -33.48% vs AAATX's -40.44%.

Which has better risk-adjusted returns?

DRIKX currently has the higher Sharpe Ratio (2.47 vs 2.18), 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.