PDPAX vs. VOO

Last updated Jun 24, 2026

PDPAX (Virtus Duff & Phelps Real Asset Fund) and VOO (Vanguard S&P 500 ETF) are both funds - PDPAX is a Global Allocation fund managed by Virtus, while VOO is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, PDPAX returned 7.19%/yr vs 15.61%/yr for VOO. A 0.71 correlation means they provide meaningful diversification when combined. PDPAX charges 0.81%/yr vs 0.03%/yr for VOO.

Performance

PDPAX vs. VOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Virtus Duff & Phelps Real Asset Fund (PDPAX) and Vanguard S&P 500 ETF (VOO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PDPAX achieves a 10.72% return, which is significantly higher than VOO's 8.19% return. Over the past 10 years, PDPAX has underperformed VOO with an annualized return of 7.19%, while VOO has yielded a comparatively higher 15.61% annualized return.

PDPAX

• 1D: 0.46%
• 1M: -2.13%
• YTD: 10.72%
• 6M: 10.44%
• 1Y: 18.72%
• 3Y*: 14.85%
• 5Y*: 8.80%
• 10Y*: 7.19%

VOO

• 1D: -1.42%
• 1M: -1.34%
• YTD: 8.19%
• 6M: 7.24%
• 1Y: 23.69%
• 3Y*: 20.78%
• 5Y*: 13.13%
• 10Y*: 15.61%

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

PDPAX vs. VOO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PDPAX Virtus Duff & Phelps Real Asset Fund	10.72%	15.90%	9.45%	4.73%	-2.66%	21.15%	-3.18%	16.84%	-9.35%	8.15%
VOO Vanguard S&P 500 ETF	8.19%	17.82%	24.98%	26.32%	-18.17%	28.79%	18.32%	31.37%	-4.50%	21.77%

Correlation

The correlation between PDPAX and VOO is 0.41, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.41
Correlation (3Y) Calculated over the trailing 3-year period	0.51
Correlation (5Y) Calculated over the trailing 5-year period	0.60
Correlation (10Y) Calculated over the trailing 10-year period	0.65
Correlation (All Time) Calculated using the full available price history since Sep 9, 2010	0.71

Over the past year, the correlation between PDPAX and VOO has dropped to 0.41 - well below their long-term average of 0.71, suggesting their price drivers have been diverging.

Return for Risk

PDPAX vs. VOO — Risk / Return Rank

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

PDPAX

PDPAX Risk / Return Rank: 52
PDPAX Sharpe Ratio Rank: 52
PDPAX Sortino Ratio Rank: 50
PDPAX Omega Ratio Rank: 50
PDPAX Calmar Ratio Rank: 54
PDPAX Martin Ratio Rank: 55

VOO

VOO Risk / Return Rank: 59
VOO Sharpe Ratio Rank: 59
VOO Sortino Ratio Rank: 56
VOO Omega Ratio Rank: 58
VOO Calmar Ratio Rank: 56
VOO Martin Ratio Rank: 67

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.

PDPAX vs. VOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Virtus Duff & Phelps Real Asset Fund (PDPAX) and Vanguard S&P 500 ETF (VOO). 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	VOO	Difference
Sharpe ratio: Return per unit of total volatility	1.98	1.91	+0.07
Sortino ratio: Return per unit of downside risk	2.73	2.60	+0.13
Omega ratio: Gain probability vs. loss probability	1.36	1.35	+0.01
Calmar ratio: Return relative to maximum drawdown	2.70	2.67	+0.03
Martin ratio: Return relative to average drawdown	10.52	11.96	-1.44

PDPAX vs. VOO - Sharpe Ratio Comparison

The current PDPAX Sharpe Ratio is 1.98, which is comparable to the VOO Sharpe Ratio of 1.91. The chart below compares the historical Sharpe Ratios of PDPAX and VOO, 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. VOO - Drawdown Comparison

The maximum PDPAX drawdown since its inception was -43.40%, which is greater than VOO's maximum drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for PDPAX and VOO.

Drawdown Indicators

	PDPAX	VOO	Difference
Max Drawdown Largest peak-to-trough decline	-43.40%	-33.99%	-9.41%
Max Drawdown (1Y) Largest decline over 1 year	-7.08%	-8.90%	+1.82%
Max Drawdown (3Y) Largest decline over 3 years	-10.66%	-18.69%	+8.03%
Max Drawdown (5Y) Largest decline over 5 years	-18.87%	-24.52%	+5.65%
Max Drawdown (10Y) Largest decline over 10 years	-32.24%	-33.99%	+1.75%
Current Drawdown Current decline from peak	-2.68%	-3.14%	+0.46%
Average Drawdown Average peak-to-trough decline	-7.61%	-3.68%	-3.93%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.81%	1.99%	-0.18%

Volatility

PDPAX vs. VOO - Volatility Comparison

The current volatility for Virtus Duff & Phelps Real Asset Fund (PDPAX) is 2.83%, while Vanguard S&P 500 ETF (VOO) has a volatility of 4.83%. This indicates that PDPAX experiences smaller price fluctuations and is considered to be less risky than VOO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PDPAX	VOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.83%	4.83%	-2.00%
Volatility (6M) Calculated over the trailing 6-month period	7.64%	9.82%	-2.18%
Volatility (1Y) Calculated over the trailing 1-year period	9.67%	12.46%	-2.79%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	13.15%	16.91%	-3.76%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	12.88%	18.02%	-5.14%

PDPAX vs. VOO - Expense Ratio Comparison

PDPAX has a 0.81% expense ratio, which is higher than VOO's 0.03% expense ratio.

Dividends

PDPAX vs. VOO - Dividend Comparison

PDPAX's dividend yield for the trailing twelve months is around 1.60%, more than VOO's 1.05% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PDPAX Virtus Duff & Phelps Real Asset Fund	1.60%	1.77%	3.65%	2.08%	1.06%	0.76%	0.68%	3.09%	2.38%	1.92%	0.80%	1.13%
VOO Vanguard S&P 500 ETF	1.05%	1.13%	1.24%	1.46%	1.69%	1.25%	1.54%	1.88%	2.06%	1.78%	2.02%	2.10%

Frequently Asked Questions

Can I hold both PDPAX and VOO in my portfolio?

PDPAX and VOO have a correlation of 0.41, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PDPAX or VOO?

VOO has higher volatility (4.83%) compared to PDPAX (2.83%). In terms of maximum drawdown, PDPAX dropped -43.40% vs VOO's -33.99%.

Which has better risk-adjusted returns?

PDPAX currently has the higher Sharpe Ratio (1.98 vs 1.91), 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.