AABTX vs. DTDRX

Last updated Jun 23, 2026

AABTX (American Funds 2015 Target Date Retirement Fund) and DTDRX (Dimensional 2065 Target Date Retirement Income Fund) are both Target Retirement Date funds. Over the past 5 years, AABTX returned 5.43%/yr vs 11.83%/yr for DTDRX. Their correlation of 0.89 suggests significant overlap in exposure. AABTX charges 0.33%/yr vs 0.22%/yr for DTDRX.

Performance

AABTX vs. DTDRX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds 2015 Target Date Retirement Fund (AABTX) and Dimensional 2065 Target Date Retirement Income Fund (DTDRX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, AABTX achieves a 4.12% return, which is significantly lower than DTDRX's 11.64% return.

AABTX

• 1D: 0.22%
• 1M: 0.53%
• YTD: 4.12%
• 6M: 4.29%
• 1Y: 11.65%
• 3Y*: 10.13%
• 5Y*: 5.43%
• 10Y*: 6.57%

DTDRX

• 1D: 0.99%
• 1M: 1.25%
• YTD: 11.64%
• 6M: 11.32%
• 1Y: 26.82%
• 3Y*: 18.87%
• 5Y*: 11.83%
• 10Y*: —

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

AABTX vs. DTDRX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
AABTX American Funds 2015 Target Date Retirement Fund	4.12%	13.11%	8.07%	9.23%	-10.56%	9.95%	9.63%	0.08%
DTDRX Dimensional 2065 Target Date Retirement Income Fund	11.64%	19.28%	17.13%	21.29%	-15.25%	20.99%	13.15%	0.00%

Correlation

The correlation between AABTX and DTDRX is 0.81, 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	0.81
Correlation (3Y) Calculated over the trailing 3-year period	0.83
Correlation (5Y) Calculated over the trailing 5-year period	0.86
Correlation (All Time) Calculated using the full available price history since Dec 31, 2019	0.89

The correlation between AABTX and DTDRX has been stable across timeframes, ranging from 0.81 to 0.89 - a consistent structural relationship.

Return for Risk

AABTX vs. DTDRX — Risk / Return Rank

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

AABTX

AABTX Risk / Return Rank: 61
AABTX Sharpe Ratio Rank: 66
AABTX Sortino Ratio Rank: 68
AABTX Omega Ratio Rank: 70
AABTX Calmar Ratio Rank: 46
AABTX Martin Ratio Rank: 56

DTDRX

DTDRX Risk / Return Rank: 81
DTDRX Sharpe Ratio Rank: 83
DTDRX Sortino Ratio Rank: 79
DTDRX Omega Ratio Rank: 76
DTDRX Calmar Ratio Rank: 80
DTDRX Martin Ratio Rank: 85

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.

AABTX vs. DTDRX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds 2015 Target Date Retirement Fund (AABTX) and Dimensional 2065 Target Date Retirement Income Fund (DTDRX). 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.

	AABTX	DTDRX	Difference
Sharpe ratio: Return per unit of total volatility	2.18	2.51	-0.32
Sortino ratio: Return per unit of downside risk	3.13	3.45	-0.32
Omega ratio: Gain probability vs. loss probability	1.42	1.45	-0.03
Calmar ratio: Return relative to maximum drawdown	2.47	3.44	-0.97
Martin ratio: Return relative to average drawdown	10.68	14.76	-4.07

AABTX vs. DTDRX - Sharpe Ratio Comparison

The current AABTX Sharpe Ratio is 2.18, which is comparable to the DTDRX Sharpe Ratio of 2.51. The chart below compares the historical Sharpe Ratios of AABTX and DTDRX, 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

AABTX vs. DTDRX - Drawdown Comparison

The maximum AABTX drawdown since its inception was -42.44%, which is greater than DTDRX's maximum drawdown of -33.33%. Use the drawdown chart below to compare losses from any high point for AABTX and DTDRX.

Drawdown Indicators

	AABTX	DTDRX	Difference
Max Drawdown Largest peak-to-trough decline	-42.44%	-33.33%	-9.11%
Max Drawdown (1Y) Largest decline over 1 year	-4.74%	-8.57%	+3.83%
Max Drawdown (3Y) Largest decline over 3 years	-5.88%	-15.95%	+10.07%
Max Drawdown (5Y) Largest decline over 5 years	-16.21%	-23.47%	+7.26%
Max Drawdown (10Y) Largest decline over 10 years	-16.58%	—	—
Current Drawdown Current decline from peak	-0.45%	-0.67%	+0.22%
Average Drawdown Average peak-to-trough decline	-4.74%	-5.07%	+0.33%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.09%	1.93%	-0.84%

Volatility

AABTX vs. DTDRX - Volatility Comparison

The current volatility for American Funds 2015 Target Date Retirement Fund (AABTX) is 2.01%, while Dimensional 2065 Target Date Retirement Income Fund (DTDRX) has a volatility of 4.60%. This indicates that AABTX experiences smaller price fluctuations and is considered to be less risky than DTDRX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AABTX	DTDRX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.01%	4.60%	-2.59%
Volatility (6M) Calculated over the trailing 6-month period	4.41%	9.56%	-5.15%
Volatility (1Y) Calculated over the trailing 1-year period	5.36%	11.75%	-6.39%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.98%	14.96%	-7.98%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	7.28%	19.17%	-11.89%

AABTX vs. DTDRX - Expense Ratio Comparison

AABTX has a 0.33% expense ratio, which is higher than DTDRX's 0.22% expense ratio.

Dividends

AABTX vs. DTDRX - Dividend Comparison

AABTX's dividend yield for the trailing twelve months is around 7.27%, more than DTDRX's 1.38% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AABTX American Funds 2015 Target Date Retirement Fund	7.27%	7.57%	5.27%	3.52%	3.72%	4.95%	4.07%	4.05%	4.28%	2.71%	3.02%	5.56%
DTDRX Dimensional 2065 Target Date Retirement Income Fund	1.38%	1.31%	2.07%	1.94%	2.01%	1.53%	2.55%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both AABTX and DTDRX in my portfolio?

AABTX and DTDRX have a correlation of 0.81, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, AABTX or DTDRX?

DTDRX has higher volatility (4.60%) compared to AABTX (2.01%). In terms of maximum drawdown, AABTX dropped -42.44% vs DTDRX's -33.33%.

Which has better risk-adjusted returns?

DTDRX currently has the higher Sharpe Ratio (2.51 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.