IDEF vs. EUAD

Last updated Aug 2, 2026

IDEF (iShares Defense Industrials Active ETF) and EUAD (Select STOXX Europe Aerospace & Defense ETF) are both Aerospace & Defense funds. IDEF is actively managed, while EUAD is passively managed. Over the past year, IDEF returned 13.32% vs 9.28% for EUAD. Their 0.72 correlation means they have sometimes moved together and sometimes differently. IDEF charges 0.55%/yr vs 0.50%/yr for EUAD.

Performance

IDEF vs. EUAD - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Defense Industrials Active ETF (IDEF) and Select STOXX Europe Aerospace & Defense ETF (EUAD). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IDEF achieves a 5.28% return, which is significantly lower than EUAD's 6.69% return.

IDEF

• 1D: 0.33%
• 1M: -1.85%
• 6M: -6.23%
• YTD: 5.28%
• 1Y: 13.32%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 22.90%

EUAD

• 1D: 0.13%
• 1M: 1.35%
• 6M: -1.34%
• YTD: 6.69%
• 1Y: 9.28%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 36.45%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
EUAD Select STOXX Europe Aerospace & Defense ETF	$7.44M	$7.38M	$13.85M
IDEF iShares Defense Industrials Active ETF	$16.78M	$18.59M	$29.23M

IDEF vs. EUAD - Yearly Performance Comparison

	2026 (YTD)	2025
IDEF iShares Defense Industrials Active ETF	5.28%	21.50%
EUAD Select STOXX Europe Aerospace & Defense ETF	6.69%	8.71%

Correlation

The correlation between IDEF and EUAD is 0.74, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.74
Correlation (All Time) Calculated using the full available price history since May 21, 2025	0.72

The correlation between IDEF and EUAD has been stable across timeframes, ranging from 0.72 to 0.74 - a consistent structural relationship.

IDEF vs. EUAD - Sectors Allocation Comparison

Sectors	IDEF	EUAD
Industrials	84.4%	100.0%
Technology	12.9%	-
Energy	0.9%	-
Basic Materials	0.7%	-
Utilities	0.3%	-
Communication Services	0.1%	-
Financial Services	0.1%	-
Consumer Cyclical	-	-
Consumer Defensive	-	-
Healthcare	-	0.1%
Real Estate	-	-

Return for Risk

IDEF vs. EUAD — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

IDEF

IDEF Risk / Return Rank: 24
IDEF Sharpe Ratio Rank: 25
IDEF Sortino Ratio Rank: 25
IDEF Omega Ratio Rank: 23
IDEF Calmar Ratio Rank: 26
IDEF Martin Ratio Rank: 23

EUAD

EUAD Risk / Return Rank: 18
EUAD Sharpe Ratio Rank: 17
EUAD Sortino Ratio Rank: 19
EUAD Omega Ratio Rank: 18
EUAD Calmar Ratio Rank: 18
EUAD Martin Ratio Rank: 17

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

IDEF vs. EUAD - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Defense Industrials Active ETF (IDEF) and Select STOXX Europe Aerospace & Defense ETF (EUAD). 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.

	IDEF	EUAD	Difference
Sharpe ratio: Return per unit of total volatility	0.56	0.29	+0.26
Sortino ratio: Return per unit of downside risk	0.95	0.64	+0.31
Omega ratio: Gain probability vs. loss probability	1.11	1.07	+0.03
Calmar ratio: Return relative to maximum drawdown	0.80	0.39	+0.42
Martin ratio: Return relative to average drawdown	1.65	0.83	+0.82

IDEF vs. EUAD - Sharpe Ratio Comparison

The current IDEF Sharpe Ratio is 0.56, which is higher than the EUAD Sharpe Ratio of 0.29. The chart below compares the historical Sharpe Ratios of IDEF and EUAD, 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

IDEF vs. EUAD - Drawdown Comparison

The maximum IDEF drawdown since its inception was -15.78%, smaller than the maximum EUAD drawdown of -22.04%. Use the drawdown chart below to compare losses from any high point for IDEF and EUAD.

Drawdown Indicators

	IDEF	EUAD	Difference
Max Drawdown Largest peak-to-trough decline	-15.78%	-22.04%	+6.26%
Max Drawdown (1Y) Largest decline over 1 year	-15.78%	-22.04%	+6.26%
Current Drawdown Current decline from peak	-11.86%	-6.90%	-4.96%
Average Drawdown Average peak-to-trough decline	-5.11%	-6.32%	+1.21%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.67%	10.24%	-2.57%

Volatility

IDEF vs. EUAD - Volatility Comparison

The current volatility for iShares Defense Industrials Active ETF (IDEF) is 7.10%, while Select STOXX Europe Aerospace & Defense ETF (EUAD) has a volatility of 7.89%. This indicates that IDEF experiences smaller price fluctuations and is considered to be less risky than EUAD based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IDEF	EUAD	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.10%	7.89%	-0.79%
Volatility (6M) Calculated over the trailing 6-month period	18.86%	24.38%	-5.52%
Volatility (1Y) Calculated over the trailing 1-year period	22.81%	29.09%	-6.28%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.65%	29.49%	-7.84%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.65%	29.49%	-7.84%

IDEF vs. EUAD - Expense Ratio Comparison

IDEF has a 0.55% expense ratio, which is higher than EUAD's 0.50% expense ratio.

Dividends

IDEF vs. EUAD - Dividend Comparison

IDEF's dividend yield for the trailing twelve months is around 0.33%, less than EUAD's 0.38% yield.

Position	TTM	2025	2024
EUAD Select STOXX Europe Aerospace & Defense ETF	0.38%	0.40%	0.10%
IDEF iShares Defense Industrials Active ETF	0.33%	0.17%	0.00%

Frequently Asked Questions

Can I hold both IDEF and EUAD in my portfolio?

IDEF and EUAD have a correlation of 0.74, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IDEF or EUAD?

EUAD has higher volatility (7.89%) compared to IDEF (7.10%). In terms of maximum drawdown, IDEF dropped -15.78% vs EUAD's -22.04%.

Which ETF is better, IDEF or EUAD?

On 1-year performance, IDEF leads with 13.32% vs 9.28% for EUAD. On fees, EUAD is cheaper at 0.50% per year. On volatility, IDEF has been the lower-risk option at 7.10%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, IDEF or EUAD?

Over the 1-year period, IDEF has performed better with a 13.32% return vs 9.28%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IDEF or EUAD?

EUAD is cheaper with a 0.50% expense ratio, compared with 0.55% for IDEF.

Which ETF pays a higher dividend yield, IDEF or EUAD?

EUAD has the higher dividend yield at 0.38%, compared with 0.33% for IDEF.

What is the main difference between IDEF and EUAD?

They also come from different issuers: iShares and Tuttle. Their fees differ too: 0.55% for IDEF and 0.50% for EUAD.

Which has better risk-adjusted returns?

IDEF currently has the higher Sharpe Ratio (0.56 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.