GRN vs. PDBC
Compare and contrast key facts about iPath Series B Carbon ETN (GRN) and Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF (PDBC).
GRN and PDBC are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. GRN is a passively managed fund by Barclays Capital that tracks the performance of the Barclays Global Carbon II Index. It was launched on Sep 10, 2019. PDBC is an actively managed fund by Invesco. It was launched on Nov 7, 2014.
Performance
GRN vs. PDBC - Performance Comparison
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GRN vs. PDBC - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | |
|---|---|---|---|---|---|---|---|---|
GRN iPath Series B Carbon ETN | -16.12% | 20.33% | -7.34% | -2.99% | -0.07% | 147.21% | 30.47% | -8.41% |
PDBC Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF | 30.72% | 5.96% | 2.09% | -6.25% | 19.23% | 41.72% | -7.84% | 5.75% |
Returns By Period
In the year-to-date period, GRN achieves a -16.12% return, which is significantly lower than PDBC's 30.72% return.
GRN
- 1D
- 1.04%
- 1M
- 4.57%
- YTD
- -16.12%
- 6M
- -4.84%
- 1Y
- 7.43%
- 3Y*
- -7.04%
- 5Y*
- 11.37%
- 10Y*
- —
PDBC
- 1D
- -1.03%
- 1M
- 16.09%
- YTD
- 30.72%
- 6M
- 33.97%
- 1Y
- 32.00%
- 3Y*
- 11.28%
- 5Y*
- 14.29%
- 10Y*
- 9.86%
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GRN vs. PDBC - Expense Ratio Comparison
GRN has a 0.75% expense ratio, which is higher than PDBC's 0.58% expense ratio.
Return for Risk
GRN vs. PDBC — Risk / Return Rank
GRN
PDBC
GRN vs. PDBC - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iPath Series B Carbon ETN (GRN) 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.
| GRN | PDBC | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.25 | 1.72 | -1.47 |
Sortino ratioReturn per unit of downside risk | 0.55 | 2.31 | -1.76 |
Omega ratioGain probability vs. loss probability | 1.07 | 1.31 | -0.24 |
Calmar ratioReturn relative to maximum drawdown | 0.22 | 3.04 | -2.82 |
Martin ratioReturn relative to average drawdown | 0.71 | 7.48 | -6.77 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| GRN | PDBC | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.25 | 1.72 | -1.47 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.28 | 0.76 | -0.48 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.56 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.39 | 0.22 | +0.17 |
Correlation
The correlation between GRN and PDBC is 0.14, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.
Dividends
GRN vs. PDBC - Dividend Comparison
GRN has not paid dividends to shareholders, while PDBC's dividend yield for the trailing twelve months is around 2.94%.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
GRN iPath Series B Carbon ETN | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
PDBC Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF | 2.94% | 3.84% | 4.42% | 4.21% | 13.05% | 50.83% | 0.01% | 1.40% | 1.00% | 3.83% | 6.51% |
Drawdowns
GRN vs. PDBC - Drawdown Comparison
The maximum GRN drawdown since its inception was -47.96%, roughly equal to the maximum PDBC drawdown of -49.52%. Use the drawdown chart below to compare losses from any high point for GRN and PDBC.
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Drawdown Indicators
| GRN | PDBC | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -47.96% | -49.52% | +1.56% |
Max Drawdown (1Y)Largest decline over 1 year | -30.39% | -11.07% | -19.32% |
Max Drawdown (5Y)Largest decline over 5 years | -47.96% | -27.63% | -20.33% |
Max Drawdown (10Y)Largest decline over 10 years | — | -40.73% | — |
Current DrawdownCurrent decline from peak | -26.34% | -1.03% | -25.31% |
Average DrawdownAverage peak-to-trough decline | -17.38% | -23.53% | +6.15% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 9.46% | 4.50% | +4.96% |
Volatility
GRN vs. PDBC - Volatility Comparison
iPath Series B Carbon ETN (GRN) has a higher volatility of 13.05% compared to Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF (PDBC) at 8.15%. This indicates that GRN's price experiences larger fluctuations and is considered to be riskier 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
| GRN | PDBC | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 13.05% | 8.15% | +4.90% |
Volatility (6M)Calculated over the trailing 6-month period | 23.68% | 13.88% | +9.80% |
Volatility (1Y)Calculated over the trailing 1-year period | 29.63% | 18.72% | +10.91% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 40.22% | 18.92% | +21.30% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 42.32% | 17.69% | +24.63% |