IAK vs. PPA

Last updated Jun 13, 2026

IAK (iShares U.S. Insurance ETF) and PPA (Invesco Aerospace & Defense ETF) are both exchange-traded funds - IAK is a Financials Equities fund tracking the Dow Jones U.S. Select Insurance Index, while PPA is a Aerospace & Defense fund tracking the SPADE Defense Index. Both are passively managed. Over the past 10 years, IAK returned 12.67%/yr vs 17.72%/yr for PPA. A 0.67 correlation means they provide meaningful diversification when combined. IAK charges 0.43%/yr vs 0.58%/yr for PPA.

Performance

IAK vs. PPA - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares U.S. Insurance ETF (IAK) 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, IAK achieves a 1.11% return, which is significantly lower than PPA's 11.20% return. Over the past 10 years, IAK has underperformed PPA with an annualized return of 12.67%, while PPA has yielded a comparatively higher 17.72% annualized return.

IAK

• 1D: 0.68%
• 1M: 3.33%
• YTD: 1.11%
• 6M: 0.88%
• 1Y: 5.16%
• 3Y*: 18.27%
• 5Y*: 13.37%
• 10Y*: 12.67%

PPA

• 1D: -1.24%
• 1M: 2.72%
• YTD: 11.20%
• 6M: 13.03%
• 1Y: 27.97%
• 3Y*: 28.86%
• 5Y*: 18.41%
• 10Y*: 17.72%

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

IAK vs. PPA - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IAK iShares U.S. Insurance ETF	1.11%	9.50%	28.25%	11.28%	11.33%	26.84%	-2.86%	25.94%	-11.48%	14.18%
PPA Invesco Aerospace & Defense ETF	11.20%	37.15%	25.28%	18.41%	9.52%	7.09%	0.45%	39.63%	-7.51%	30.10%

Correlation

The correlation between IAK and PPA is 0.11, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.11
Correlation (3Y) Calculated over the trailing 3-year period	0.37
Correlation (5Y) Calculated over the trailing 5-year period	0.54
Correlation (10Y) Calculated over the trailing 10-year period	0.61
Correlation (All Time) Calculated using the full available price history since May 5, 2006	0.67

Over the past year, the correlation between IAK and PPA has dropped to 0.11 - well below their long-term average of 0.67, suggesting their price drivers have been diverging.

IAK vs. PPA - Sectors Allocation Comparison

Sectors	IAK	PPA
Financial Services	99.5%	0.0%
Healthcare	0.5%	-
Basic Materials	-	-
Communication Services	-	0.1%
Consumer Cyclical	-	-
Consumer Defensive	-	-
Energy	-	-
Industrials	-	90.6%
Real Estate	-	-
Technology	-	9.3%
Utilities	-	-

Return for Risk

IAK vs. PPA — Risk / Return Rank

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

IAK

IAK Risk / Return Rank: 15
IAK Sharpe Ratio Rank: 14
IAK Sortino Ratio Rank: 13
IAK Omega Ratio Rank: 13
IAK Calmar Ratio Rank: 17
IAK Martin Ratio Rank: 16

PPA

PPA Risk / Return Rank: 46
PPA Sharpe Ratio Rank: 47
PPA Sortino Ratio Rank: 49
PPA Omega Ratio Rank: 43
PPA Calmar Ratio Rank: 48
PPA Martin Ratio Rank: 42

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.

IAK vs. PPA - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares U.S. Insurance ETF (IAK) 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.

	IAK	PPA	Difference
Sharpe ratio: Return per unit of total volatility	0.29	1.44	-1.15
Sortino ratio: Return per unit of downside risk	0.50	2.14	-1.64
Omega ratio: Gain probability vs. loss probability	1.06	1.25	-0.19
Calmar ratio: Return relative to maximum drawdown	0.57	2.11	-1.53
Martin ratio: Return relative to average drawdown	1.27	5.94	-4.67

IAK vs. PPA - Sharpe Ratio Comparison

The current IAK Sharpe Ratio is 0.29, which is lower than the PPA Sharpe Ratio of 1.44. The chart below compares the historical Sharpe Ratios of IAK 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

IAK vs. PPA - Drawdown Comparison

The maximum IAK drawdown since its inception was -77.38%, which is greater than PPA's maximum drawdown of -57.37%. Use the drawdown chart below to compare losses from any high point for IAK and PPA.

Drawdown Indicators

	IAK	PPA	Difference
Max Drawdown Largest peak-to-trough decline	-77.38%	-57.37%	-20.01%
Max Drawdown (1Y) Largest decline over 1 year	-7.62%	-13.71%	+6.09%
Max Drawdown (3Y) Largest decline over 3 years	-11.58%	-15.24%	+3.66%
Max Drawdown (5Y) Largest decline over 5 years	-14.76%	-18.37%	+3.61%
Max Drawdown (10Y) Largest decline over 10 years	-44.95%	-43.92%	-1.03%
Current Drawdown Current decline from peak	-0.23%	-6.15%	+5.92%
Average Drawdown Average peak-to-trough decline	-16.11%	-9.18%	-6.93%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.41%	4.85%	-1.44%

Volatility

IAK vs. PPA - Volatility Comparison

The current volatility for iShares U.S. Insurance ETF (IAK) is 5.49%, while Invesco Aerospace & Defense ETF (PPA) has a volatility of 8.91%. This indicates that IAK 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

	IAK	PPA	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.49%	8.91%	-3.42%
Volatility (6M) Calculated over the trailing 6-month period	10.75%	17.06%	-6.31%
Volatility (1Y) Calculated over the trailing 1-year period	15.10%	20.04%	-4.94%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.14%	18.70%	-0.56%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.92%	20.73%	+0.19%

IAK vs. PPA - Expense Ratio Comparison

IAK has a 0.43% expense ratio, which is lower than PPA's 0.58% expense ratio.

Dividends

IAK vs. PPA - Dividend Comparison

IAK's dividend yield for the trailing twelve months is around 2.60%, more than PPA's 0.38% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IAK iShares U.S. Insurance ETF	2.60%	1.69%	1.49%	1.44%	1.69%	2.26%	2.07%	1.84%	2.33%	1.62%	1.68%	1.62%
PPA Invesco Aerospace & Defense ETF	0.38%	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 IAK and PPA in my portfolio?

IAK and PPA have a correlation of 0.11, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IAK or PPA?

PPA has higher volatility (8.91%) compared to IAK (5.49%). In terms of maximum drawdown, IAK dropped -77.38% vs PPA's -57.37%.

Which ETF is better, IAK or PPA?

On 10-year performance, PPA leads with 17.72% vs 12.67% for IAK. On fees, IAK is cheaper at 0.43% per year. On volatility, IAK has been the lower-risk option at 5.49%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, IAK or PPA?

Over the 10-year period, PPA has performed better with a 17.72% return vs 12.67%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IAK or PPA?

IAK is cheaper with a 0.43% expense ratio, compared with 0.58% for PPA.

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

IAK has the higher dividend yield at 2.60%, compared with 0.38% for PPA.

What is the main difference between IAK and PPA?

IAK is categorized as Financials Equities, while PPA is Aerospace & Defense. IAK tracks Dow Jones U.S. Select Insurance Index, while PPA tracks SPADE Defense Index. They also come from different issuers: iShares and Invesco. Their fees differ too: 0.43% for IAK and 0.58% for PPA.

Which has better risk-adjusted returns?

PPA currently has the higher Sharpe Ratio (1.44 vs 0.29), 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.