DRIRX vs. PTDIX

Last updated Jun 23, 2026

DRIRX (Dimensional 2020 Target Date Retirement Income Fund) and PTDIX (Principal LifeTime 2040 Fund) are both Target Retirement Date funds. Over the past 10 years, DRIRX returned 4.85%/yr vs 10.60%/yr for PTDIX. A 0.58 correlation means they provide meaningful diversification when combined. DRIRX charges 0.18%/yr vs 0.01%/yr for PTDIX.

Performance

DRIRX vs. PTDIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Dimensional 2020 Target Date Retirement Income Fund (DRIRX) and Principal LifeTime 2040 Fund (PTDIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, DRIRX achieves a 3.89% return, which is significantly lower than PTDIX's 7.32% return. Over the past 10 years, DRIRX has underperformed PTDIX with an annualized return of 4.85%, while PTDIX has yielded a comparatively higher 10.60% annualized return.

DRIRX

• 1D: 0.52%
• 1M: 0.87%
• YTD: 3.89%
• 6M: 3.99%
• 1Y: 9.98%
• 3Y*: 6.74%
• 5Y*: 1.87%
• 10Y*: 4.85%

PTDIX

• 1D: 1.02%
• 1M: 1.53%
• YTD: 7.32%
• 6M: 7.21%
• 1Y: 18.66%
• 3Y*: 16.00%
• 5Y*: 8.36%
• 10Y*: 10.60%

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

DRIRX vs. PTDIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
DRIRX Dimensional 2020 Target Date Retirement Income Fund	3.89%	9.59%	4.53%	7.67%	-17.65%	7.02%	16.14%	15.63%	-5.17%	9.86%
PTDIX Principal LifeTime 2040 Fund	7.32%	15.59%	17.43%	18.33%	-18.13%	15.35%	16.04%	24.91%	-7.95%	20.69%

Correlation

The correlation between DRIRX and PTDIX is 0.77, 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	0.77
Correlation (3Y) Calculated over the trailing 3-year period	0.70
Correlation (5Y) Calculated over the trailing 5-year period	0.62
Correlation (10Y) Calculated over the trailing 10-year period	0.58
Correlation (All Time) Calculated using the full available price history since Jan 4, 2016	0.58

The correlation between DRIRX and PTDIX shifts across timeframes, from 0.58 (10 years) to 0.77 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

DRIRX vs. PTDIX — Risk / Return Rank

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

DRIRX

DRIRX Risk / Return Rank: 53
DRIRX Sharpe Ratio Rank: 53
DRIRX Sortino Ratio Rank: 56
DRIRX Omega Ratio Rank: 56
DRIRX Calmar Ratio Rank: 46
DRIRX Martin Ratio Rank: 53

PTDIX

PTDIX Risk / Return Rank: 47
PTDIX Sharpe Ratio Rank: 42
PTDIX Sortino Ratio Rank: 41
PTDIX Omega Ratio Rank: 43
PTDIX Calmar Ratio Rank: 48
PTDIX Martin Ratio Rank: 58

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.

DRIRX vs. PTDIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Dimensional 2020 Target Date Retirement Income Fund (DRIRX) and Principal LifeTime 2040 Fund (PTDIX). 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.

	DRIRX	PTDIX	Difference
Sharpe ratio: Return per unit of total volatility	1.98	1.78	+0.20
Sortino ratio: Return per unit of downside risk	2.87	2.51	+0.36
Omega ratio: Gain probability vs. loss probability	1.38	1.33	+0.05
Calmar ratio: Return relative to maximum drawdown	2.47	2.52	-0.05
Martin ratio: Return relative to average drawdown	10.16	10.99	-0.82

DRIRX vs. PTDIX - Sharpe Ratio Comparison

The current DRIRX Sharpe Ratio is 1.98, which is comparable to the PTDIX Sharpe Ratio of 1.78. The chart below compares the historical Sharpe Ratios of DRIRX and PTDIX, 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

DRIRX vs. PTDIX - Drawdown Comparison

The maximum DRIRX drawdown since its inception was -23.69%, smaller than the maximum PTDIX drawdown of -54.38%. Use the drawdown chart below to compare losses from any high point for DRIRX and PTDIX.

Drawdown Indicators

	DRIRX	PTDIX	Difference
Max Drawdown Largest peak-to-trough decline	-23.69%	-54.38%	+30.69%
Max Drawdown (1Y) Largest decline over 1 year	-4.09%	-7.32%	+3.23%
Max Drawdown (3Y) Largest decline over 3 years	-7.60%	-13.05%	+5.45%
Max Drawdown (5Y) Largest decline over 5 years	-23.69%	-25.43%	+1.74%
Max Drawdown (10Y) Largest decline over 10 years	-23.69%	-30.02%	+6.33%
Current Drawdown Current decline from peak	-0.43%	-0.45%	+0.02%
Average Drawdown Average peak-to-trough decline	-5.59%	-7.48%	+1.89%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.99%	1.68%	-0.69%

Volatility

DRIRX vs. PTDIX - Volatility Comparison

The current volatility for Dimensional 2020 Target Date Retirement Income Fund (DRIRX) is 1.94%, while Principal LifeTime 2040 Fund (PTDIX) has a volatility of 4.05%. This indicates that DRIRX experiences smaller price fluctuations and is considered to be less risky than PTDIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DRIRX	PTDIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.94%	4.05%	-2.11%
Volatility (6M) Calculated over the trailing 6-month period	4.02%	8.56%	-4.54%
Volatility (1Y) Calculated over the trailing 1-year period	5.11%	10.36%	-5.25%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	8.19%	13.58%	-5.39%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	7.61%	13.86%	-6.25%

DRIRX vs. PTDIX - Expense Ratio Comparison

DRIRX has a 0.18% expense ratio, which is higher than PTDIX's 0.01% 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

DRIRX vs. PTDIX - Dividend Comparison

DRIRX's dividend yield for the trailing twelve months is around 5.62%, less than PTDIX's 9.13% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DRIRX Dimensional 2020 Target Date Retirement Income Fund	5.62%	5.80%	4.18%	3.62%	7.41%	4.42%	3.00%	2.51%	2.59%	1.48%	1.34%	0.00%
PTDIX Principal LifeTime 2040 Fund	9.13%	9.80%	12.28%	4.40%	8.61%	8.92%	6.01%	7.26%	9.28%	6.07%	4.86%	6.73%

Frequently Asked Questions

Can I hold both DRIRX and PTDIX in my portfolio?

DRIRX and PTDIX have a correlation of 0.77, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, DRIRX or PTDIX?

PTDIX has higher volatility (4.05%) compared to DRIRX (1.94%). In terms of maximum drawdown, DRIRX dropped -23.69% vs PTDIX's -54.38%.

Which has better risk-adjusted returns?

DRIRX currently has the higher Sharpe Ratio (1.98 vs 1.78), 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.