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IDEFvsNATOETF Comparison
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 15.43% year-to-date (YTD) with +$69M in YTD flows. NATO performs worse with 11.68% YTD performance, and +$27M 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.
IDEF vs NATO performance and flow charts
Performance
Cumulative Flows
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IDEF NATO | +2.14%+1.40% | +17.87%+15.60% | +15.43%+11.68% | n/a+53.03% | n/an/a | n/an/a |
| Flows | IDEF NATO | +$55M+$11M | +$69M+$27M | +$69M+$27M | -+$73M | -- | -- |
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IDEF NATO | +22.71%+20.02% | n/a+18.79% | n/an/a | n/an/a |
| Max drawdown | IDEF NATO | -7.18%-6.51% | n/a-13.00% | n/an/a | n/an/a |
| Max drawdown duration | IDEF NATO | 39d30d | n/a40d | n/an/a | n/an/a |
IDEF | NATO | |
Last sale 3/11/2026 at 1:30 PM | $35.45 | $42.27 |
| Previous close 03/10/2026 | $35.72 | $42.37 |
| Consolidated volume 03/10/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Create an account to view replication metrics
IDEF | NATO | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
IDEF | NATO | |
|---|---|---|
| Last price | $35.45 | $42.27 |
| 1D performance | -0.77% | -0.24% |
| AuM | $118.05 M | $93.65 M |
| E/R | 0.55% | 0.35% |
IDEF | NATO | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | iShares | Themes Management Company |
| Benchmark | - | Solactive Transatlantic Aerospace and Defense Index |
| N° of holdings | 98 | 57 |
| Asset class | - | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | May 19, 2025 | October 10, 2024 |
| ESG | No | No |
Countries
Sectors
Diversification
Total weight of top 15 holdings out of 15
Total weight of top 15 holdings out of 15
Top 15 holdings
How have the IDEF and NATO ETFs performed in 2026?
As of March 10, 2026, IDEF is up 15.43% year-to-date (YTD), while NATO has returned 11.68%. 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 +$69M in flows, compared to +$27M for NATO.
Which ETF is bigger: IDEF or NATO?
As of March 10, 2026, IDEF holds $118.05 M in assets under management (AUM), while NATO manages $93.65 M.
What sectors do the IDEF and NATO ETFs invest in?
IDEF leans toward sectors like Industrials. Meanwhile, NATO focuses on Industrials.
What are the top holdings of the IDEF ETF and NATO ETF?
IDEF top holdings include RAYTHEON TECHNOLOGIES CORPORD, GENERAL DYNAMICS and NORTHROP GRUMMAN. NATO holds in its top three: RAYTHEON TECHNOLOGIES CORPORD, BOEING U and GENERAL ELECTRIC.
Which ETF is more diversified: IDEF or NATO?
IDEF holds 113 securities with 48.99% of its assets in the top 15. NATO has 74 securities and a top 15 weight of 76.21%.
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