PDPAX vs. PDRDX

Last updated Aug 4, 2026

PDPAX (Virtus Duff & Phelps Real Asset Fund) and PDRDX (Principal Diversified Real Asset Fund) are both Global Allocation funds. Over the past 10 years, PDPAX returned 7.12%/yr vs 6.35%/yr for PDRDX. Their correlation of 0.92 means they have usually moved in the same direction. PDPAX charges 0.81%/yr vs 0.83%/yr for PDRDX.

Performance

PDPAX vs. PDRDX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Virtus Duff & Phelps Real Asset Fund (PDPAX) and Principal Diversified Real Asset Fund (PDRDX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both investments are quite close, with PDPAX having a 12.69% return and PDRDX slightly higher at 12.95%. Over the past 10 years, PDPAX has outperformed PDRDX with an annualized return of 7.12%, while PDRDX has yielded a comparatively lower 6.35% annualized return.

PDPAX

• 1D: -0.28%
• 1M: 1.20%
• 6M: 8.03%
• YTD: 12.69%
• 1Y: 20.67%
• 3Y*: 13.51%
• 5Y*: 9.05%
• 10Y*: 7.12%
• ALL TIME*: 4.49%

PDRDX

• 1D: -0.51%
• 1M: 2.47%
• 6M: 7.93%
• YTD: 12.95%
• 1Y: 21.15%
• 3Y*: 10.44%
• 5Y*: 6.30%
• 10Y*: 6.35%
• ALL TIME*: 5.26%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
PDPAX Virtus Duff & Phelps Real Asset Fund	$0.00	$0.00	$0.00
PDRDX Principal Diversified Real Asset Fund	$0.00	$0.00	$0.00

PDPAX vs. PDRDX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PDPAX Virtus Duff & Phelps Real Asset Fund	12.69%	15.90%	9.45%	4.73%	-2.66%	21.15%	-3.18%	16.84%	-9.35%	8.15%
PDRDX Principal Diversified Real Asset Fund	12.95%	14.63%	3.09%	3.22%	-6.19%	17.30%	3.97%	15.02%	-7.90%	10.18%

Correlation

The correlation between PDPAX and PDRDX is 0.93, meaning they have usually moved in the same direction, including during past declines.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.93
Correlation (3Y) Balances recent behavior with more history.	0.93
Correlation (5Y) Shows whether the relationship held over a longer period.	0.94
Correlation (10Y) Provides a long-term view across more market conditions.	0.93
Correlation (All Time) Calculated using the full available price history since Mar 17, 2010	0.92

The correlation between PDPAX and PDRDX has been stable across timeframes, ranging from 0.92 to 0.94 - a consistent structural relationship.

Return for Risk

PDPAX vs. PDRDX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

PDPAX

PDPAX Risk / Return Rank: 83
PDPAX Sharpe Ratio Rank: 86
PDPAX Sortino Ratio Rank: 82
PDPAX Omega Ratio Rank: 81
PDPAX Calmar Ratio Rank: 83
PDPAX Martin Ratio Rank: 84

PDRDX

PDRDX Risk / Return Rank: 87
PDRDX Sharpe Ratio Rank: 89
PDRDX Sortino Ratio Rank: 85
PDRDX Omega Ratio Rank: 83
PDRDX Calmar Ratio Rank: 91
PDRDX Martin Ratio Rank: 88

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

PDPAX vs. PDRDX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Virtus Duff & Phelps Real Asset Fund (PDPAX) and Principal Diversified Real Asset Fund (PDRDX). 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.

	PDPAX	PDRDX	Difference
Sharpe ratio: Return per unit of total volatility	2.14	2.24	-0.09
Sortino ratio: Return per unit of downside risk	2.95	3.07	-0.12
Omega ratio: Gain probability vs. loss probability	1.39	1.40	-0.02
Calmar ratio: Return relative to maximum drawdown	2.92	3.64	-0.73
Martin ratio: Return relative to average drawdown	10.98	11.94	-0.96

PDPAX vs. PDRDX - Sharpe Ratio Comparison

The current PDPAX Sharpe Ratio is 2.14, which is comparable to the PDRDX Sharpe Ratio of 2.24. The chart below compares the historical Sharpe Ratios of PDPAX and PDRDX, 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

PDPAX vs. PDRDX - Drawdown Comparison

The maximum PDPAX drawdown since its inception was -43.40%, which is greater than PDRDX's maximum drawdown of -28.55%. Use the drawdown chart below to compare losses from any high point for PDPAX and PDRDX.

Drawdown Indicators

	PDPAX	PDRDX	Difference
Max Drawdown Largest peak-to-trough decline	-43.40%	-28.55%	-14.85%
Max Drawdown (1Y) Largest decline over 1 year	-7.08%	-5.88%	-1.20%
Max Drawdown (3Y) Largest decline over 3 years	-10.66%	-10.94%	+0.28%
Max Drawdown (5Y) Largest decline over 5 years	-18.87%	-19.35%	+0.48%
Max Drawdown (10Y) Largest decline over 10 years	-32.24%	-28.55%	-3.69%
Current Drawdown Current decline from peak	-1.44%	-1.61%	+0.17%
Average Drawdown Average peak-to-trough decline	-7.57%	-5.95%	-1.62%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.88%	1.79%	+0.09%

Volatility

PDPAX vs. PDRDX - Volatility Comparison

The current volatility for Virtus Duff & Phelps Real Asset Fund (PDPAX) is 2.37%, while Principal Diversified Real Asset Fund (PDRDX) has a volatility of 2.50%. This indicates that PDPAX experiences smaller price fluctuations and is considered to be less risky than PDRDX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PDPAX	PDRDX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.37%	2.50%	-0.13%
Volatility (6M) Calculated over the trailing 6-month period	7.78%	8.05%	-0.27%
Volatility (1Y) Calculated over the trailing 1-year period	9.65%	9.62%	+0.03%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	13.11%	11.01%	+2.10%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	12.81%	10.80%	+2.01%

PDPAX vs. PDRDX - Expense Ratio Comparison

PDPAX has a 0.81% expense ratio, which is lower than PDRDX's 0.83% expense ratio.

Dividends

PDPAX vs. PDRDX - Dividend Comparison

PDPAX's dividend yield for the trailing twelve months is around 1.57%, less than PDRDX's 3.66% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PDPAX Virtus Duff & Phelps Real Asset Fund	1.57%	1.77%	3.65%	2.08%	1.06%	0.76%	0.68%	3.09%	2.38%	1.92%	0.80%	1.13%
PDRDX Principal Diversified Real Asset Fund	3.66%	4.19%	2.43%	2.52%	12.88%	6.56%	0.52%	2.36%	3.47%	2.21%	2.61%	0.99%

Frequently Asked Questions

Can I hold both PDPAX and PDRDX in my portfolio?

With a correlation of 0.93, PDPAX and PDRDX 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 is riskier, PDPAX or PDRDX?

PDRDX has higher volatility (2.50%) compared to PDPAX (2.37%). In terms of maximum drawdown, PDPAX dropped -43.40% vs PDRDX's -28.55%.

Which has better risk-adjusted returns?

PDRDX currently has the higher Sharpe Ratio (2.24 vs 2.14), 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.