IDEFvsMISLETF Comparison
ETF 1
IDEF
iShares Defense Industrials Active ETF
VS
ETF 2
MISL
First Trust Indxx Aerospace & Defense ETF
iShares Defense Industrials Active ETF (IDEF) and First Trust Indxx Aerospace & Defense ETF (MISL) belong to the same industry segment: . IDEF's top 3 sector exposures are Industrials, Technology and Non-Energy Materials. In contrast, MISL's top sector exposures are Industrials, Business Services and Telecommunications. IDEF is less expensive with a Total Expense Ratio (TER) of 0.55%, versus 0.6% for MISL. IDEF is up 2% year-to-date (YTD) with +$4.48B in YTD flows. MISL performs better with 3.35% YTD performance, and -$592M in YTD flows. Run a side-by-side ETF comparison of IDEF and MISL below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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IDEF vs MISL performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 07/29/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IDEF MISL | +0.29%-1.86% | -3.38%+1.51% | +2.00%+3.35% | +9.53%+13.08% | n/a+91.14% | n/an/a |
| Flows | IDEF MISL | +$99M-$27M | +$825M-$742M | +$4.48B-$592M | +$4.49B+$487M | -+$584M | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IDEF MISL | +24.67%+28.63% | +21.85%+24.19% | n/a+20.18% | n/an/a |
| Max drawdown | IDEF MISL | -9.59%-14.16% | -15.58%-16.91% | n/a-17.72% | n/an/a |
| Max drawdown duration | IDEF MISL | 59d61d | 149d190d | n/a184d | n/an/a |
Trading data
IDEF | MISL | |
Last sale 7/30/2026 at 1:34 PM | $31.66 | $42.18 |
| Previous close 07/29/2026 | $31.46 | $44.19 |
| Consolidated volume 07/29/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of June 30, 2026
1-year trailing difference
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IDEF
is actively managed and doesn’t replicate an indexIDEF | MISL | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 7/30/2026 at 1:34 PM
Live
Closed
IDEF | MISL | |
|---|---|---|
| Last price | $31.66 | $42.18 |
| 1D performance | +0.64% | -4.56% |
| AuM | $4.12 B | $748.76 M |
| E/R | 0.55% | 0.6% |
Characteristics
IDEF | MISL | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | iShares | First Trust |
| Benchmark | - | Indxx US Aerospace and Defense Index |
| N° of holdings | 114 | 38 |
| Asset class | - | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | May 19, 2025 | October 26, 2022 |
| ESG | No | No |
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Exposure
Countries
IDEF
USA
59.6%
United Kingdom
8.89%
Other
31.51%
MISL
USA
92.43%
Other
7.57%
Sectors
IDEF
Industrials
84.69%
Technology
8.38%
Other
6.93%
MISL
Industrials
80.23%
Business Services
8.28%
Other
11.49%
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Diversification
IDEF
Total weight of top 15 holdings out of 15
54.39%
MISL
Total weight of top 15 holdings out of 15
77.73%
Top 15 holdings
Data as of June 30, 2026
IDEF
RTX Corp.
8.38%
Lockheed Martin Corp.
6.87%
Rolls-Royce Holdings Plc
5.18%
The Boeing Co.
4.99%
General Dynamics Corp.
4.45%
Fortinet, Inc.
3.36%
Northrop Grumman Corp.
3.32%
BAE Systems Plc
2.73%
GE Aerospace
2.58%
Airbus SE
2.50%
Thales SA
2.33%
Howmet Aerospace, Inc.
2.20%
Elbit Systems Ltd.
2.00%
US84615Q1031
1.80%
BWX Technologies, Inc.
1.71%
MISL
GE Aerospace
8.93%
The Boeing Co.
7.38%
Palantir Technologies, Inc.
7.21%
US84615Q1031
7.19%
RTX Corp.
6.99%
Lockheed Martin Corp.
6.24%
Rocket Lab Corp.
5.40%
HEICO Corp.
4.45%
General Dynamics Corp.
3.98%
TransDigm Group, Inc.
3.98%
Howmet Aerospace, Inc.
3.89%
AST Spacemobile, Inc.
3.33%
L3Harris Technologies, Inc.
3.03%
Curtiss-Wright Corp.
2.90%
Northrop Grumman Corp.
2.83%
Frequently asked questions about IDEF and MISL
How have the IDEF and MISL ETFs performed in 2026?
As of July 29, 2026, IDEF is up 2% year-to-date (YTD), while MISL has returned 3.35%. That puts MISL better performer ahead so far this year.
Which ETF is attracting more investor money: IDEF or MISL?
Year-to-date, the IDEF ETF saw +$4.48B in flows, compared to -$592M for MISL.
Which ETF is more volatile: IDEF or MISL?
Over the past year, IDEF had a volatility of 21.85%, while MISL experienced 24.19%.
Which ETF is bigger: IDEF or MISL?
As of July 29, 2026, IDEF holds $4.12 B in assets under management (AUM), while MISL manages $748.76 M.
What sectors do the IDEF and MISL ETFs invest in?
IDEF leans toward sectors like Industrials and Technology. Meanwhile, MISL focuses on Industrials and Business Services.
What are the top holdings of the IDEF ETF and MISL ETF?
IDEF top holdings include RTX Corp., Lockheed Martin Corp. and Rolls-Royce Holdings Plc. MISL holds in its top three: GE Aerospace, The Boeing Co. and Palantir Technologies, Inc..
Which ETF is more diversified: IDEF or MISL?
IDEF holds 117 securities with 54.39% of its assets in the top 15. MISL has 38 securities and a top 15 weight of 77.73%.
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