IDEFvsNATOETF Comparison
ETF 1
IDEF
iShares Defense Industrials Active ETF
VS
ETF 2
NATO
Themes Transatlantic Defense ETF
iShares Defense Industrials Active ETF (IDEF) and Themes Transatlantic Defense ETF (NATO) belong to the same industry segment: . IDEF's top 3 sector exposures are Industrials, Information Technology and Materials. In contrast, NATO's top sector exposures are Industrials, Information Technology and Consumer Discretionary. IDEF is more expensive with a Total Expense Ratio (TER) of 0.55%, versus 0.35% for NATO. IDEF is up 5.08% year-to-date (YTD) with +$4.33B in YTD flows. NATO performs better with 7% YTD performance, and +$39M in YTD flows. Run a side-by-side ETF comparison of IDEF and NATO 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 NATO performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 06/18/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IDEF NATO | +0.71%+6.64% | -7.69%+0.81% | +5.08%+7.00% | +20.75%+20.51% | n/an/a | n/an/a |
| Flows | IDEF NATO | +$581M- | +$1.37B-$1M | +$4.33B+$39M | +$4.35B+$61M | -- | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IDEF NATO | +26.99%+28.10% | +21.10%+20.18% | n/an/a | n/an/a |
| Max drawdown | IDEF NATO | -10.66%-9.67% | -14.45%-14.82% | n/an/a | n/an/a |
| Max drawdown duration | IDEF NATO | 92d66d | 108d109d | n/an/a | n/an/a |
Trading data
IDEF | NATO | |
Last sale 6/18/2026 at 1:30 PM | $32.32 | $40.52 |
| Previous close 06/18/2026 | $32.86 | $40.88 |
| Consolidated volume 06/18/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of May 29, 2026
1-year trailing difference
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IDEF
is actively managed and doesn’t replicate an indexIDEF | NATO | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 6/18/2026 at 1:30 PM
Live
Closed
IDEF | NATO | |
|---|---|---|
| Last price | $32.32 | $40.52 |
| 1D performance | -1.64% | -0.89% |
| AuM | $4.08 B | $100.69 M |
| E/R | 0.55% | 0.35% |
Characteristics
IDEF | NATO | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | iShares | Themes Management Company |
| Benchmark | - | Solactive Transatlantic Aerospace and Defense Index |
| N° of holdings | 94 | 59 |
| Asset class | - | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | May 19, 2025 | October 10, 2024 |
| ESG | No | No |
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Exposure
Countries
IDEF
USA
58.39%
Republic of Korea
10.9%
Other
30.72%
NATO
USA
66.07%
United Kingdom
11.1%
Other
22.83%
Sectors
IDEF
Industrials
75.02%
Information Techn.
7.53%
Other
17.44%
NATO
Industrials
90.96%
Other
9.04%
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Diversification
IDEF
Total weight of top 15 holdings out of 15
49.09%
NATO
Total weight of top 15 holdings out of 15
76.57%
Top 15 holdings
Data as of April 30, 2026
IDEF
RAYTHEON TECHNOLOGIES CORPORD
8.92%
LOCKHEED MARTIN
5.00%
PALANTIR TECHNOLOGIES
4.39%
GENERAL DYNAMICS
4.30%
NORTHROP GRUMMAN
3.91%
ROLLS-ROYCE HOLDINGS
2.81%
MITSUBISHI HVY
2.68%
RHEINMETALL
2.65%
BOEING U
2.64%
US7731211089
2.57%
BWX TECHNOLOGIES INC
2.25%
BAE SYSTEMS
2.03%
CAMECO
1.70%
HANWHA AEROSPACE
1.65%
HYUNDAI-ROTEM
1.57%
NATO
BOEING U
8.27%
RAYTHEON TECHNOLOGIES CORPORD
7.99%
GENERAL ELECTRIC
7.53%
ROLLS-ROYCE HOLDINGS
6.08%
AIRBUS SE
5.40%
SAFRAN
5.28%
HONEYWELL INTL
5.13%
LOCKHEED MARTIN
4.97%
HOWMET AEROSPACE INC
4.74%
BAE SYSTEMS
4.09%
NORTHROP GRUMMAN
4.04%
RHEINMETALL
3.56%
GENERAL DYNAMICS
3.40%
TRANSDIGM GROUP
3.14%
L3 HARRIS TECHNOLOGIES
2.95%
Frequently asked questions about IDEF and NATO
How have the IDEF and NATO ETFs performed in 2026?
As of June 18, 2026, IDEF is up 5.08% year-to-date (YTD), while NATO has returned 7%. That puts NATO better performer ahead so far this year.
Which ETF is attracting more investor money: IDEF or NATO?
Year-to-date, the IDEF ETF saw +$4.33B in flows, compared to +$39M for NATO.
Which ETF is more volatile: IDEF or NATO?
Over the past year, IDEF had a volatility of 21.1%, while NATO experienced 20.18%.
Which ETF is bigger: IDEF or NATO?
As of June 18, 2026, IDEF holds $4.08 B in assets under management (AUM), while NATO manages $100.69 M.
What sectors do the IDEF and NATO ETFs invest in?
IDEF leans toward sectors like Industrials and Information Technology. Meanwhile, NATO focuses on Industrials.
What are the top holdings of the IDEF ETF and NATO ETF?
IDEF top holdings include RAYTHEON TECHNOLOGIES CORPORD, LOCKHEED MARTIN and PALANTIR TECHNOLOGIES. NATO holds in its top three: BOEING U, RAYTHEON TECHNOLOGIES CORPORD and GENERAL ELECTRIC.
Which ETF is more diversified: IDEF or NATO?
IDEF holds 111 securities with 49.09% of its assets in the top 15. NATO has 76 securities and a top 15 weight of 76.57%.
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Latest news about IDEF & NATO
ETF Comparison: iShares Defense Industrials Active ETF (IDEF) Versus iShares U.S. Aerospace & Defense ETF (ITA)
April 8, 2026
IDEF
ETFs Reveal a Growing Gap in U.S. vs. EU Defense Stock Performance
March 5, 2025
NATO
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