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IDEFvsNATOETF Comparison

ETF 1
IDEF

iShares Defense Industrials Active ETF

This fund is part of
US Large Cap
+0.9%
VS
ETF 2
NATO

Themes Transatlantic Defense ETF

iShares Defense Industrials Active ETF (IDEF) belongs to the US Large Cap segment. Themes Transatlantic Defense ETF (NATO) is part of the 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 7.33% year-to-date (YTD) with +$3.66B in YTD flows. NATO performs worse with -0.03% YTD performance, and +$42M 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

-6.0-4.0-2.00.02.04.06.0%Mar 24Mar 31Apr 8Apr 15Apr 22

Cumulative Flows

0 M50 M100 M150 M200 M250 MMar 24Mar 31Apr 8Apr 15Apr 22

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Daily, global ETF data for advanced analysis or integration into apps (API), from our partner Trackinsight.

Historic performance and flows
Data as of 04/24/2026
1M3MYTD1Y3Y5Y
Perf.
IDEF
NATO
-1.42%-3.02%
-5.74%-9.88%
+7.33%-0.03%
n/a+31.68%
n/an/a
n/an/a
Flows
IDEF
NATO
+$255M+$2M
+$3.64B+$28M
+$3.66B+$42M
-+$77M
--
--
Volatility and drawdown
3M1Y3Y5Y
Volatility
IDEF
NATO
+26.02%+26.10%
n/a+18.53%
n/an/a
n/an/a
Max drawdown
IDEF
NATO
-14.25%-14.82%
n/a-14.82%
n/an/a
n/an/a
Max drawdown duration
IDEF
NATO
53d53d
n/a53d
n/an/a
n/an/a
Trading data

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IDEF
NATO
Last sale
4/27/2026 at 1:30 PM
$33.09
$37.94
Previous close
04/24/2026
$33.14
$37.88
Consolidated volume
04/24/2026
Average volume
30 days
Average discount or premium
30 days
Average Bid/Ask spread
30 days
Replication quality
Data as of March 31, 2026
1-year trailing difference

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IDEF
is actively managed and doesn’t replicate an index

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IDEF
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 4/27/2026 at 1:30 PM
Live
Closed
IDEF
NATO
Last price
$33.09
$37.94
1D performance
-0.14%
+0.18%
AuM$3.50 B$97.11 M
E/R0.55%0.35%
Characteristics
IDEF
NATO
Management strategyActivePassive
ProvideriSharesThemes Management Company
Benchmark-Solactive Transatlantic Aerospace and Defense Index
N° of holdings9459
Asset class--
Trailing 12m distribution yield
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Inception dateMay 19, 2025October 10, 2024
ESGNoNo
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Exposure

Countries

IDEF
USA
60.2%
Republic of Korea
9.11%
Other
30.69%
NATO
USA
66.36%
United Kingdom
11.02%
Other
22.62%

Sectors

IDEF
Industrials
76.34%
Information Techn.
7.73%
Other
15.94%
NATO
Industrials
91.91%
Other
8.09%
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Diversification

IDEF

Total weight of top 15 holdings out of 15

51.85%
NATO

Total weight of top 15 holdings out of 15

77.94%

Top 15 holdings

Data as of March 31, 2026
IDEF
RAYTHEON TECHNOLOGIES CORPORD
10.08%
LOCKHEED MARTIN
6.02%
PALANTIR TECHNOLOGIES
4.76%
NORTHROP GRUMMAN
4.76%
GENERAL DYNAMICS
4.43%
RHEINMETALL
2.87%
ROLLS-ROYCE HOLDINGS
2.70%
MITSUBISHI HVY
2.50%
BOEING U
2.37%
BWX TECHNOLOGIES INC
2.20%
BAE SYSTEMS
2.19%
US7731211089
2.07%
KRATOS DEFENSE AND SECURITY SOLS
1.78%
AU000000DRO2
1.59%
CAMECO
1.55%
NATO
RAYTHEON TECHNOLOGIES CORPORD
8.77%
GENERAL ELECTRIC
7.35%
BOEING U
6.88%
ROLLS-ROYCE HOLDINGS
5.90%
LOCKHEED MARTIN
5.89%
HONEYWELL INTL
5.50%
SAFRAN
5.27%
AIRBUS SE
5.14%
NORTHROP GRUMMAN
4.79%
HOWMET AEROSPACE INC
4.44%
BAE SYSTEMS
4.24%
GENERAL DYNAMICS
3.77%
RHEINMETALL
3.70%
L3 HARRIS TECHNOLOGIES
3.18%
TRANSDIGM GROUP
3.12%
Frequently asked questions about IDEF and NATO

How have the IDEF and NATO ETFs performed in 2026?

As of April 24, 2026, IDEF is up 7.33% year-to-date (YTD), while NATO has lost -0.03%. That puts IDEF better performer ahead so far this year.

Which ETF is attracting more investor money: IDEF or NATO?

Year-to-date, the IDEF ETF saw +$3.66B in flows, compared to +$42M for NATO.

Which ETF is bigger: IDEF or NATO?

As of April 24, 2026, IDEF holds $3.50 B in assets under management (AUM), while NATO manages $97.11 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: RAYTHEON TECHNOLOGIES CORPORD, GENERAL ELECTRIC and BOEING U.

Which ETF is more diversified: IDEF or NATO?

IDEF holds 110 securities with 51.85% of its assets in the top 15. NATO has 76 securities and a top 15 weight of 77.94%.

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