PKW vs. PBW
Compare and contrast key facts about Invesco BuyBack Achievers™ ETF (PKW) and Invesco WilderHill Clean Energy ETF (PBW).
PKW and PBW are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. PKW is a passively managed fund by Invesco that tracks the performance of the NASDAQ US BuyBack Achievers Index. It was launched on Dec 20, 2006. PBW is a passively managed fund by Invesco that tracks the performance of the The WilderHill Clean Energy Index (AMEX). It was launched on Mar 3, 2005. Both PKW and PBW are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.
Performance
PKW vs. PBW - Performance Comparison
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PKW vs. PBW - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
PKW Invesco BuyBack Achievers™ ETF | -1.51% | 17.92% | 17.33% | 17.24% | -10.21% | 32.62% | 8.41% | 34.09% | -10.53% | 17.75% |
PBW Invesco WilderHill Clean Energy ETF | 3.51% | 53.96% | -30.77% | -20.03% | -44.55% | -29.86% | 204.82% | 62.58% | -14.11% | 39.92% |
Returns By Period
In the year-to-date period, PKW achieves a -1.51% return, which is significantly lower than PBW's 3.51% return. Over the past 10 years, PKW has outperformed PBW with an annualized return of 12.61%, while PBW has yielded a comparatively lower 6.57% annualized return.
PKW
- 1D
- 0.63%
- 1M
- -4.00%
- YTD
- -1.51%
- 6M
- 0.25%
- 1Y
- 17.80%
- 3Y*
- 16.98%
- 5Y*
- 10.34%
- 10Y*
- 12.61%
PBW
- 1D
- 0.00%
- 1M
- -4.70%
- YTD
- 3.51%
- 6M
- 3.91%
- 1Y
- 100.93%
- 3Y*
- -6.15%
- 5Y*
- -18.62%
- 10Y*
- 6.57%
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PKW vs. PBW - Expense Ratio Comparison
PKW has a 0.62% expense ratio, which is higher than PBW's 0.61% expense ratio.
Return for Risk
PKW vs. PBW — Risk / Return Rank
PKW
PBW
PKW vs. PBW - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Invesco BuyBack Achievers™ ETF (PKW) and Invesco WilderHill Clean Energy ETF (PBW). 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.
| PKW | PBW | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.93 | 2.37 | -1.44 |
Sortino ratioReturn per unit of downside risk | 1.39 | 2.88 | -1.49 |
Omega ratioGain probability vs. loss probability | 1.21 | 1.34 | -0.14 |
Calmar ratioReturn relative to maximum drawdown | 1.33 | 4.83 | -3.50 |
Martin ratioReturn relative to average drawdown | 5.67 | 13.26 | -7.59 |
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
| PKW | PBW | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.93 | 2.37 | -1.44 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.59 | -0.44 | +1.03 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.64 | 0.17 | +0.47 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.51 | -0.07 | +0.59 |
Correlation
The correlation between PKW and PBW is 0.66, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.
Dividends
PKW vs. PBW - Dividend Comparison
PKW's dividend yield for the trailing twelve months is around 0.94%, more than PBW's 0.86% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
PKW Invesco BuyBack Achievers™ ETF | 0.94% | 0.99% | 0.86% | 1.17% | 1.22% | 0.72% | 1.48% | 1.30% | 1.30% | 0.65% | 1.59% | 1.14% |
PBW Invesco WilderHill Clean Energy ETF | 0.86% | 0.79% | 2.84% | 3.68% | 4.21% | 1.71% | 0.44% | 1.45% | 2.04% | 1.28% | 2.68% | 1.53% |
Drawdowns
PKW vs. PBW - Drawdown Comparison
The maximum PKW drawdown since its inception was -54.59%, smaller than the maximum PBW drawdown of -89.02%. Use the drawdown chart below to compare losses from any high point for PKW and PBW.
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Drawdown Indicators
| PKW | PBW | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -54.59% | -89.02% | +34.43% |
Max Drawdown (1Y)Largest decline over 1 year | -13.82% | -21.24% | +7.42% |
Max Drawdown (5Y)Largest decline over 5 years | -23.51% | -84.98% | +61.47% |
Max Drawdown (10Y)Largest decline over 10 years | -40.93% | -89.02% | +48.09% |
Current DrawdownCurrent decline from peak | -5.24% | -73.91% | +68.67% |
Average DrawdownAverage peak-to-trough decline | -8.01% | -62.86% | +54.85% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.24% | 7.74% | -4.50% |
Volatility
PKW vs. PBW - Volatility Comparison
The current volatility for Invesco BuyBack Achievers™ ETF (PKW) is 4.79%, while Invesco WilderHill Clean Energy ETF (PBW) has a volatility of 11.75%. This indicates that PKW experiences smaller price fluctuations and is considered to be less risky than PBW based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| PKW | PBW | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.79% | 11.75% | -6.96% |
Volatility (6M)Calculated over the trailing 6-month period | 10.17% | 31.89% | -21.72% |
Volatility (1Y)Calculated over the trailing 1-year period | 19.15% | 42.80% | -23.65% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 17.47% | 42.93% | -25.46% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 19.77% | 38.48% | -18.71% |