IIGD vs. PPA

Last updated Jun 4, 2026

IIGD (Invesco Investment Grade Defensive ETF) and PPA (Invesco Aerospace & Defense ETF) are both exchange-traded funds - IIGD is a Corporate Bonds fund tracking the Invesco Investment Grade Defensive Index, while PPA is a Aerospace & Defense fund tracking the SPADE Defense Index. Both are passively managed. Over the past 5 years, IIGD returned 1.63%/yr vs 17.82%/yr for PPA. At a 0.10 correlation, their price movements are largely independent. IIGD charges 0.13%/yr vs 0.58%/yr for PPA.

Performance

IIGD vs. PPA - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco Investment Grade Defensive ETF (IIGD) 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, IIGD achieves a 0.25% return, which is significantly lower than PPA's 8.54% return.

IIGD

• 1D: -0.10%
• 1M: 0.05%
• YTD: 0.25%
• 6M: 0.49%
• 1Y: 4.13%
• 3Y*: 5.07%
• 5Y*: 1.63%
• 10Y*: —

PPA

• 1D: -1.74%
• 1M: 3.19%
• YTD: 8.54%
• 6M: 13.46%
• 1Y: 26.57%
• 3Y*: 28.92%
• 5Y*: 17.82%
• 10Y*: 17.38%

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

IIGD vs. PPA - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
IIGD Invesco Investment Grade Defensive ETF	0.25%	7.11%	3.90%	5.71%	-7.27%	-1.42%	6.30%	7.40%	0.86%
PPA Invesco Aerospace & Defense ETF	8.54%	37.15%	25.28%	18.41%	9.52%	7.09%	0.45%	39.63%	-16.66%

Correlation

The correlation between IIGD and PPA is 0.26, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.26
Correlation (3Y) Calculated over the trailing 3-year period	0.16
Correlation (5Y) Calculated over the trailing 5-year period	0.17
Correlation (All Time) Calculated using the full available price history since Sep 10, 2018	0.10

The correlation between IIGD and PPA shifts across timeframes, from 0.10 (all time) to 0.26 (1 year), reflecting how their relationship changes across market environments.

IIGD vs. PPA - Sectors Allocation Comparison

Sectors	IIGD	PPA
Financial Services	16.7%	-
Industrials	11.6%	90.1%
Technology	8.7%	9.8%
Consumer Defensive	5.6%	-
Healthcare	5.5%	-
Energy	5.5%	-
Consumer Cyclical	3.0%	-
Real Estate	3.0%	-
Communication Services	2.4%	0.1%
Basic Materials	1.8%	-
Utilities	1.3%	-

Return for Risk

IIGD vs. PPA — Risk / Return Rank

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

IIGD

IIGD Risk / Return Rank: 54
IIGD Sharpe Ratio Rank: 53
IIGD Sortino Ratio Rank: 58
IIGD Omega Ratio Rank: 55
IIGD Calmar Ratio Rank: 50
IIGD Martin Ratio Rank: 51

PPA

PPA Risk / Return Rank: 37
PPA Sharpe Ratio Rank: 38
PPA Sortino Ratio Rank: 39
PPA Omega Ratio Rank: 35
PPA Calmar Ratio Rank: 38
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.

IIGD vs. PPA - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco Investment Grade Defensive ETF (IIGD) 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.

	IIGD	PPA	Difference
Sharpe ratio: Return per unit of total volatility	1.81	1.40	+0.41
Sortino ratio: Return per unit of downside risk	2.75	2.05	+0.70
Omega ratio: Gain probability vs. loss probability	1.34	1.24	+0.10
Calmar ratio: Return relative to maximum drawdown	2.49	1.95	+0.54
Martin ratio: Return relative to average drawdown	8.72	5.68	+3.04
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IIGD vs. PPA - Sharpe Ratio Comparison

The current IIGD Sharpe Ratio is 1.81, which is comparable to the PPA Sharpe Ratio of 1.40. The chart below compares the historical Sharpe Ratios of IIGD 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.

Sharpe Ratios by Period

	IIGD	PPA	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.81	1.40	+0.41
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.45	0.97	-0.52
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.84	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.77	0.66	+0.11

Drawdowns

IIGD vs. PPA - Drawdown Comparison

The maximum IIGD drawdown since its inception was -11.43%, smaller than the maximum PPA drawdown of -57.37%. Use the drawdown chart below to compare losses from any high point for IIGD and PPA.

Drawdown Indicators

	IIGD	PPA	Difference
Max Drawdown Largest peak-to-trough decline	-11.43%	-57.37%	+45.94%
Max Drawdown (1Y) Largest decline over 1 year	-1.67%	-13.71%	+12.04%
Max Drawdown (3Y) Largest decline over 3 years	-2.14%	-15.24%	+13.10%
Max Drawdown (5Y) Largest decline over 5 years	-11.43%	-18.37%	+6.94%
Max Drawdown (10Y) Largest decline over 10 years	—	-43.92%	—
Current Drawdown Current decline from peak	-0.80%	-8.40%	+7.60%
Average Drawdown Average peak-to-trough decline	-2.42%	-9.18%	+6.76%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.47%	4.69%	-4.22%

Volatility

IIGD vs. PPA - Volatility Comparison

The current volatility for Invesco Investment Grade Defensive ETF (IIGD) is 0.75%, while Invesco Aerospace & Defense ETF (PPA) has a volatility of 6.73%. This indicates that IIGD 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

	IIGD	PPA	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.75%	6.73%	-5.98%
Volatility (6M) Calculated over the trailing 6-month period	1.65%	15.95%	-14.30%
Volatility (1Y) Calculated over the trailing 1-year period	2.29%	19.03%	-16.74%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.66%	18.49%	-14.83%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.70%	20.64%	-16.94%

IIGD vs. PPA - Expense Ratio Comparison

IIGD has a 0.13% expense ratio, which is lower than PPA's 0.58% expense ratio.

Dividends

IIGD vs. PPA - Dividend Comparison

IIGD's dividend yield for the trailing twelve months is around 4.28%, more than PPA's 0.39% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IIGD Invesco Investment Grade Defensive ETF	4.28%	4.25%	4.13%	3.74%	1.73%	1.77%	3.21%	2.44%	1.23%	0.00%	0.00%	0.00%
PPA Invesco Aerospace & Defense ETF	0.39%	0.42%	0.61%	0.67%	0.83%	0.59%	0.88%	0.95%	0.90%	0.67%	1.70%	1.41%

Frequently Asked Questions

Can I hold both IIGD and PPA in my portfolio?

IIGD and PPA have a correlation of 0.26, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IIGD or PPA?

PPA has higher volatility (6.73%) compared to IIGD (0.75%). In terms of maximum drawdown, IIGD dropped -11.43% vs PPA's -57.37%.

Which ETF is better, IIGD or PPA?

On 5-year performance, PPA leads with 17.82% vs 1.63% for IIGD. On fees, IIGD is cheaper at 0.13% per year. On volatility, IIGD has been the lower-risk option at 0.75%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, IIGD or PPA?

Over the 5-year period, PPA has performed better with a 17.82% return vs 1.63%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IIGD or PPA?

IIGD is cheaper with a 0.13% expense ratio, compared with 0.58% for PPA.

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

IIGD has the higher dividend yield at 4.28%, compared with 0.39% for PPA.

What is the main difference between IIGD and PPA?

IIGD is categorized as Corporate Bonds, while PPA is Aerospace & Defense. IIGD tracks Invesco Investment Grade Defensive Index, while PPA tracks SPADE Defense Index. Their fees differ too: 0.13% for IIGD and 0.58% for PPA.

Which has better risk-adjusted returns?

IIGD currently has the higher Sharpe Ratio (1.81 vs 1.40), 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.