Do DUTY and IDEF hold the same stocks?

By their latest filings, 29% of their books are the same securities at the same weight. Overlap is the sum of the smaller weight of every security they share.

Which is more different from the S&P 500, DUTY or IDEF?

DUTY has 62% of its weight in S&P 500 names and IDEF has 40%, so DUTY differs more from the index.

Which is cheaper, DUTY or IDEF?

DUTY charges 0.45% a year and IDEF charges 0.55%, so DUTY is cheaper. Fees come from each fund's prospectus.

Data as of Nov 4, 2026.

Thematic ETFs

DUTY vs IDEF: Holdings Overlap & Returns

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DUTY and IDEF hold 29% of their weight in the same names.

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Net assets: $2.1m on Jun 30, 2026 for U.S. Defense ETF, and $3.6bn on Nov 4, 2026 for iShares Defense Industrials and Tech Active ETF.

DUTY on its own →IDEF on its own →

At a glance

61.7%

DUTY in the S&P 500

40.1%

IDEF in the S&P 500

+7.2%

DUTY total return, since launch, Apr 8, 2026

−5.8%

IDEF total return, 1 year

DUTY · 6 months to Nov 4, 2026 38% of its weight is outside the S&P 500

62% of DUTY's weight is in S&P 500 companies and 38% is outside the index. Holdings as of Jun 30, 2026.

IDEF · 1 year to Nov 4, 2026 60% of its weight is outside the S&P 500

40% of IDEF's weight is in S&P 500 companies and 60% is outside the index. Holdings as of Nov 3, 2026.

Pair scorecard

DUTY costs 0.10 points a year less.

DUTY vs IDEF: Holdings Overlap & Returns
Measure	DUTY	IDEF
Return
Measure	DUTY	IDEF
Total return, 1 year	not published	−5.8%
Drawdown
Measure	DUTY	IDEF
Below its all-time high	9.0%, high on Aug 13, 2026	19.2%, high on Mar 2, 2026
Benchmark
Measure	DUTY	IDEF
What it tracks	Defense	Defense
Cost and size
Measure	DUTY	IDEF
Expense ratio	0.45%	0.55%
Net assets, DUTY as of Jun 30, 2026 and IDEF as of Nov 4, 2026	$2.1m	$3.6bn
Holdings
Measure	DUTY	IDEF
Holdings in common	29%

Method

What they share

29%

By the books each fund has filed, DUTY and IDEF hold 29% of their money in the same securities at the same weight. Holdings dated Jun 30, 2026 and Nov 3, 2026.

50%

0 half 100%

half

29% in common

Positions both hold · largest shared weight first DUTY IDEF

Lockheed Martin Corp 7.32% 5.42%

General Dynamics Corp 7.55% 4.39%

Northrop Grumman Corp 6.60% 3.93%

Palantir Technologies Inc 5.96% 2.67%

Palo Alto Networks Inc 5.20% 1.74%

Crowdstrike Holdings Inc 4.63% 1.62%

Fortinet Inc 4.91% 0.80%

L3Harris Technologies Inc 6.83% 0.75%

Zscaler Inc 2.71% 0.61%

Leidos Holdings Inc 2.73% 0.57%

Rocket Lab Corp 5.34% 0.57%

Science Applications Internati 0.95% 0.56%

Only in one fund ↓

Only in DUTY

Okta Inc 4.61%

Akamai Technologies Inc 3.14%

Check Point Software Technolog 2.88%

CACI International Inc 2.27%

Rubrik Inc 2.10%

SentinelOne Inc 1.03%

Qualys Inc 0.95%

Tenable Holdings Inc 0.74%

Only in IDEF

RTX 7.41%

THALES SA 3.76%

SPACE EXPLORATION TECHNOLOGIES COR 2.77%

ROLLS-ROYCE HOLDINGS PLC 2.27%

SAAB CLASS B 1.95%

RHEINMETALL AG 1.67%

LEONARDO FINMECCANICA SPA 1.63%

AIRBUS GROUP 1.61%

Check overlap with more funds →

Window by window

Window by window: DUTY vs IDEF: Holdings Overlap & Returns
	Total return
Window	DUTY	IDEF
3 months	−2.5%	−14.0%
6 months	+13.4%	−12.4%
1 year	–	−5.8%
Since launchNot the same days: DUTY Apr 2026 · IDEF May 2025	+7.2%	+18.8%

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Side by side

DUTY U.S. Defense ETF · Holds 50 stocks in defense, 62% of its weight in S&P 500 companies IDEF iShares Defense Industrials and Tech Active ETF · Holds 162 stocks in defense, 40% of its weight in S&P 500 companies

Issuer Aura iShares

Theme Defense Defense

In the S&P 500 61.7% 40.1%

Active share vs the S&P 500 98.1% 92.6%

In the Nasdaq-100 26.0% 11.2%

Holdings 50 162

Top ten, share of the fund 59.0% 36.3%

Expense ratio 0.45% 0.55%

Fee for the differing part 0.46% 0.59%

Total return, 1 year +7.2% (since launch, Apr 8, 2026) −5.8%

vs its benchmark not measured not measured

Below its high −9.0% −19.2%

Net assets, DUTY as of Jun 30, 2026 and IDEF as of Nov 4, 2026 $2.1m $3.6bn

As of Nov 4, 2026. Source: ETFIQ.

29% of the two portfolios are the same securities at the same weight.

Alert

About each fund

DUTY

By weight, 62% of DUTY's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 98%. The top ten holdings are 59% of the fund across 50 positions, as filed for Jun 30, 2026. Since it first traded on Apr 8, 2026 the fund returned +7.2% with distributions reinvested. It sits 9.0% below its all-time high of Aug 13, 2026.

IDEF

By weight, 40% of IDEF's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 93%. The top ten holdings are 36% of the fund across 162 positions, as published by its issuer for Nov 3, 2026. Over the year to Nov 4, 2026 the fund returned −5.8% with distributions reinvested. It sits 19.2% below its all-time high of Mar 2, 2026.

Questions people ask

Do DUTY and IDEF hold the same stocks?: By their latest filings, 29% of their books are the same securities at the same weight. Overlap is the sum of the smaller weight of every security they share.
Which is more different from the S&P 500, DUTY or IDEF?: DUTY has 62% of its weight in S&P 500 names and IDEF has 40%, so DUTY differs more from the index.
Which is cheaper, DUTY or IDEF?: DUTY charges 0.45% a year and IDEF charges 0.55%, so DUTY is cheaper. Fees come from each fund's prospectus.

Other comparisons

DUTY vs XAR DUTY vs SHLD DUTY vs PPA DUTY vs EUAD IDEF vs WAR IDEF vs WDEF IDEF vs NATO IDEF vs KDEF

Where to next

All thematic ETFs ranked by the S&P 500 Difference Score →How the scores are computed →DUTY on its own →IDEF on its own →DUTY holdings →IDEF dividend history →IDEF holdings →Method →Standards and sources →

Sources and dates

DUTY filings on SEC EDGAR ↗

DUTY prospectus with the expense ratio (SEC) ↗

Aura website ↗

IDEF filings on SEC EDGAR ↗

IDEF prospectus with the expense ratio (SEC) ↗

iShares page for IDEF ↗

Links are sources, not endorsements. A comparison is not a recommendation.

How this is computed

Overlap adds up the smaller of the two weights for each security both funds hold.

Every number is an ETFIQ calculation with distributions reinvested.

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ETFIQ, DUTY against IDEF, data as of Nov 4, 2026. https://etfiq.com/compare/themes/duty-vs-idef

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