RWK vs. PPA

Last updated Jun 24, 2026

RWK (Invesco S&P MidCap 400 Revenue ETF) and PPA (Invesco Aerospace & Defense ETF) are both exchange-traded funds - RWK is a Small Cap Blend Equities fund tracking the S&P MidCap 400 Revenue-Weighted Index, while PPA is a Aerospace & Defense fund tracking the SPADE Defense Index. Both are passively managed. Over the past 10 years, RWK returned 13.12%/yr vs 17.79%/yr for PPA. A 0.77 correlation means they provide meaningful diversification when combined. RWK charges 0.39%/yr vs 0.58%/yr for PPA.

Performance

RWK vs. PPA - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco S&P MidCap 400 Revenue ETF (RWK) and Invesco Aerospace & Defense ETF (PPA). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RWK achieves a 13.93% return, which is significantly higher than PPA's 9.76% return. Over the past 10 years, RWK has underperformed PPA with an annualized return of 13.12%, while PPA has yielded a comparatively higher 17.79% annualized return.

RWK

• 1D: -0.34%
• 1M: 3.57%
• YTD: 13.93%
• 6M: 12.02%
• 1Y: 26.41%
• 3Y*: 17.49%
• 5Y*: 11.36%
• 10Y*: 13.12%

PPA

• 1D: -0.53%
• 1M: 0.95%
• YTD: 9.76%
• 6M: 7.56%
• 1Y: 26.02%
• 3Y*: 28.78%
• 5Y*: 18.41%
• 10Y*: 17.79%

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

RWK vs. PPA - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RWK Invesco S&P MidCap 400 Revenue ETF	13.93%	10.27%	11.94%	23.76%	-8.19%	34.31%	11.06%	28.20%	-14.65%	13.39%
PPA Invesco Aerospace & Defense ETF	9.76%	37.15%	25.28%	18.41%	9.52%	7.09%	0.45%	39.63%	-7.51%	30.10%

Correlation

The correlation between RWK and PPA is 0.54, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.54
Correlation (3Y) Calculated over the trailing 3-year period	0.64
Correlation (5Y) Calculated over the trailing 5-year period	0.71
Correlation (10Y) Calculated over the trailing 10-year period	0.73
Correlation (All Time) Calculated using the full available price history since Feb 22, 2008	0.77

Over the past year, the correlation between RWK and PPA has dropped to 0.54 - well below their long-term average of 0.77, suggesting their price drivers have been diverging.

RWK vs. PPA - Sectors Allocation Comparison

Sectors	RWK	PPA
Industrials	22.1%	90.6%
Consumer Cyclical	20.4%	-
Technology	16.1%	9.2%
Financial Services	12.1%	0.1%
Consumer Defensive	10.4%	-
Energy	5.0%	-
Basic Materials	4.9%	-
Healthcare	4.2%	-
Real Estate	2.6%	-
Utilities	1.6%	-
Communication Services	0.7%	0.1%

Return for Risk

RWK vs. PPA — Risk / Return Rank

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

RWK

RWK Risk / Return Rank: 48
RWK Sharpe Ratio Rank: 48
RWK Sortino Ratio Rank: 51
RWK Omega Ratio Rank: 44
RWK Calmar Ratio Rank: 51
RWK Martin Ratio Rank: 48

PPA

PPA Risk / Return Rank: 38
PPA Sharpe Ratio Rank: 38
PPA Sortino Ratio Rank: 40
PPA Omega Ratio Rank: 35
PPA Calmar Ratio Rank: 40
PPA Martin Ratio Rank: 36

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.

RWK vs. PPA - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco S&P MidCap 400 Revenue ETF (RWK) and Invesco Aerospace & Defense ETF (PPA). 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.

	RWK	PPA	Difference
Sharpe ratio: Return per unit of total volatility	1.58	1.30	+0.28
Sortino ratio: Return per unit of downside risk	2.39	1.96	+0.43
Omega ratio: Gain probability vs. loss probability	1.28	1.23	+0.05
Calmar ratio: Return relative to maximum drawdown	2.38	1.91	+0.48
Martin ratio: Return relative to average drawdown	7.64	5.29	+2.35

RWK vs. PPA - Sharpe Ratio Comparison

The current RWK Sharpe Ratio is 1.58, which is comparable to the PPA Sharpe Ratio of 1.30. The chart below compares the historical Sharpe Ratios of RWK and PPA, 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

RWK vs. PPA - Drawdown Comparison

The maximum RWK drawdown since its inception was -56.49%, roughly equal to the maximum PPA drawdown of -57.37%. Use the drawdown chart below to compare losses from any high point for RWK and PPA.

Drawdown Indicators

	RWK	PPA	Difference
Max Drawdown Largest peak-to-trough decline	-56.49%	-57.37%	+0.88%
Max Drawdown (1Y) Largest decline over 1 year	-11.14%	-13.71%	+2.57%
Max Drawdown (3Y) Largest decline over 3 years	-24.58%	-15.24%	-9.34%
Max Drawdown (5Y) Largest decline over 5 years	-24.58%	-18.37%	-6.21%
Max Drawdown (10Y) Largest decline over 10 years	-46.20%	-43.92%	-2.28%
Current Drawdown Current decline from peak	-1.79%	-7.37%	+5.58%
Average Drawdown Average peak-to-trough decline	-7.53%	-9.18%	+1.65%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.46%	4.93%	-1.47%

Volatility

RWK vs. PPA - Volatility Comparison

The current volatility for Invesco S&P MidCap 400 Revenue ETF (RWK) is 4.36%, while Invesco Aerospace & Defense ETF (PPA) has a volatility of 8.40%. This indicates that RWK experiences smaller price fluctuations and is considered to be less risky than PPA based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RWK	PPA	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.36%	8.40%	-4.04%
Volatility (6M) Calculated over the trailing 6-month period	12.12%	17.09%	-4.97%
Volatility (1Y) Calculated over the trailing 1-year period	16.82%	20.15%	-3.33%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.09%	18.70%	+2.39%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.93%	20.73%	+2.20%

RWK vs. PPA - Expense Ratio Comparison

RWK has a 0.39% expense ratio, which is lower than PPA's 0.58% expense ratio.

Dividends

RWK vs. PPA - Dividend Comparison

RWK's dividend yield for the trailing twelve months is around 1.04%, more than PPA's 0.37% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PPA Invesco Aerospace & Defense ETF	0.37%	0.42%	0.61%	0.67%	0.83%	0.59%	0.88%	0.95%	0.90%	0.67%	1.70%	1.41%
RWK Invesco S&P MidCap 400 Revenue ETF	1.04%	1.25%	1.11%	1.05%	1.18%	0.85%	0.96%	1.09%	1.22%	0.99%	1.30%	0.92%

Frequently Asked Questions

Can I hold both RWK and PPA in my portfolio?

RWK and PPA have a correlation of 0.54, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RWK or PPA?

PPA has higher volatility (8.40%) compared to RWK (4.36%). In terms of maximum drawdown, RWK dropped -56.49% vs PPA's -57.37%.

Which ETF is better, RWK or PPA?

On 10-year performance, PPA leads with 17.79% vs 13.12% for RWK. On fees, RWK is cheaper at 0.39% per year. On volatility, RWK has been the lower-risk option at 4.36%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, RWK or PPA?

Over the 10-year period, PPA has performed better with a 17.79% return vs 13.12%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, RWK or PPA?

RWK is cheaper with a 0.39% expense ratio, compared with 0.58% for PPA.

Which ETF pays a higher dividend yield, RWK or PPA?

RWK has the higher dividend yield at 1.04%, compared with 0.37% for PPA.

What is the main difference between RWK and PPA?

RWK is categorized as Small Cap Blend Equities, while PPA is Aerospace & Defense. RWK tracks S&P MidCap 400 Revenue-Weighted Index, while PPA tracks SPADE Defense Index. Their fees differ too: 0.39% for RWK and 0.58% for PPA.

Which has better risk-adjusted returns?

RWK currently has the higher Sharpe Ratio (1.58 vs 1.30), 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.