SPY vs. PDBC
SPY (State Street SPDR S&P 500 ETF) and PDBC (Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF) are both exchange-traded funds - SPY is a S&P 500 fund tracking the S&P 500 Index, while PDBC is a Commodities fund actively managed by Invesco. SPY is passively managed, while PDBC is actively managed. Over the past 10 years, SPY returned 15.65%/yr vs 7.87%/yr for PDBC. At a 0.25 correlation, their price movements are largely independent. SPY charges 0.09%/yr vs 0.58%/yr for PDBC.
Performance
SPY vs. PDBC - Performance Comparison
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Returns By Period
In the year-to-date period, SPY achieves a 10.99% return, which is significantly lower than PDBC's 27.47% return. Over the past 10 years, SPY has outperformed PDBC with an annualized return of 15.65%, while PDBC has yielded a comparatively lower 7.87% annualized return.
SPY
- 1D
- 1.76%
- 1M
- 2.12%
- YTD
- 10.99%
- 6M
- 11.52%
- 1Y
- 27.89%
- 3Y*
- 21.15%
- 5Y*
- 13.87%
- 10Y*
- 15.65%
PDBC
- 1D
- -1.00%
- 1M
- -9.24%
- YTD
- 27.47%
- 6M
- 29.29%
- 1Y
- 29.58%
- 3Y*
- 10.66%
- 5Y*
- 11.09%
- 10Y*
- 7.87%
SPY vs. PDBC - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
SPY State Street SPDR S&P 500 ETF | 10.99% | 17.72% | 24.89% | 26.18% | -18.18% | 28.73% | 18.33% | 31.22% | -4.57% | 21.71% |
PDBC Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF | 27.47% | 5.96% | 2.09% | -6.25% | 19.23% | 41.72% | -7.84% | 11.44% | -12.78% | 5.06% |
Correlation
The correlation between SPY and PDBC is -0.17, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | -0.17 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.04 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.15 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.24 |
Correlation (All Time) Calculated using the full available price history since Nov 7, 2014 | 0.25 |
The correlation between SPY and PDBC shifts across timeframes, from -0.17 (1 year) to 0.25 (all time), reflecting how their relationship changes across market environments.
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Return for Risk
SPY vs. PDBC — Risk / Return Rank
SPY
PDBC
SPY vs. PDBC - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for State Street SPDR S&P 500 ETF (SPY) and Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF (PDBC). 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.
| SPY | PDBC | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.68 | ||
| Sortino ratioReturn per unit of downside risk | +0.91 | ||
| Omega ratioGain probability vs. loss probability | 1.41 | 1.28 | +0.13 |
| Calmar ratioReturn relative to maximum drawdown | 3.15 | 2.78 | +0.37 |
| Martin ratioReturn relative to average drawdown | 14.24 | 7.99 | +6.25 |
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Drawdowns
SPY vs. PDBC - Drawdown Comparison
The maximum SPY drawdown since its inception was -55.19%, which is greater than PDBC's maximum drawdown of -49.52%. Use the drawdown chart below to compare losses from any high point for SPY and PDBC.
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Drawdown Indicators
| SPY | PDBC | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -55.19% | -49.52% | -5.67% |
Max Drawdown (1Y)Largest decline over 1 year | -8.88% | -10.68% | +1.80% |
Max Drawdown (3Y)Largest decline over 3 years | -18.76% | -13.95% | -4.81% |
Max Drawdown (5Y)Largest decline over 5 years | -24.50% | -27.63% | +3.13% |
Max Drawdown (10Y)Largest decline over 10 years | -33.72% | -40.73% | +7.01% |
Current DrawdownCurrent decline from peak | -0.62% | -10.68% | +10.06% |
Average DrawdownAverage peak-to-trough decline | -9.04% | -23.16% | +14.12% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.96% | 3.71% | -1.75% |
Volatility
SPY vs. PDBC - Volatility Comparison
The current volatility for State Street SPDR S&P 500 ETF (SPY) is 4.62%, while Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF (PDBC) has a volatility of 4.94%. This indicates that SPY experiences smaller price fluctuations and is considered to be less risky than PDBC based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SPY | PDBC | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.62% | 4.94% | -0.32% |
Volatility (6M)Calculated over the trailing 6-month period | 9.73% | 16.16% | -6.43% |
Volatility (1Y)Calculated over the trailing 1-year period | 12.37% | 18.73% | -6.36% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 17.14% | 19.17% | -2.03% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 17.98% | 17.79% | +0.19% |
SPY vs. PDBC - Expense Ratio Comparison
SPY has a 0.09% expense ratio, which is lower than PDBC's 0.58% expense ratio.
Dividends
SPY vs. PDBC - Dividend Comparison
SPY's dividend yield for the trailing twelve months is around 0.98%, less than PDBC's 3.01% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
PDBC Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF | 3.01% | 3.84% | 4.42% | 4.21% | 13.05% | 50.83% | 0.01% | 1.40% | 1.00% | 3.83% | 6.51% | 0.00% |
SPY State Street SPDR S&P 500 ETF | 0.98% | 1.07% | 1.21% | 1.40% | 1.65% | 1.20% | 1.52% | 1.75% | 2.04% | 1.80% | 2.03% | 2.06% |
Frequently Asked Questions
SPY and PDBC have a correlation of -0.17, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
PDBC has higher volatility (4.94%) compared to SPY (4.62%). In terms of maximum drawdown, SPY dropped -55.19% vs PDBC's -49.52%.
On 10-year performance, SPY leads with 15.65% vs 7.87% for PDBC. On fees, SPY is cheaper at 0.09% per year. On volatility, SPY has been the lower-risk option at 4.62%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 10-year period, SPY has performed better with a 15.65% return vs 7.87%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
SPY is cheaper with a 0.09% expense ratio, compared with 0.58% for PDBC.
PDBC has the higher dividend yield at 3.01%, compared with 0.98% for SPY.
SPY is categorized as S&P 500, while PDBC is Commodities. They also come from different issuers: State Street and Invesco. Their fees differ too: 0.09% for SPY and 0.58% for PDBC.
SPY currently has the higher Sharpe Ratio (2.27 vs 1.59), 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.
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