Do IDEF and WDEF hold the same stocks?

By their latest filings, 19% 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, IDEF or WDEF?

IDEF has 40% of its weight in S&P 500 names and WDEF has 0%, so WDEF differs more from the index.

Which is cheaper, IDEF or WDEF?

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

Data as of Nov 4, 2026.

Thematic ETFs

IDEF vs WDEF: Holdings Overlap & Returns

Share on X Download as PDF

Over the year to Nov 4, 2026, IDEF returned −5.8% to WDEF's −5.6%; 19% of their weight is in the same names.

askIQ about this page

askIQ about IDEF and WDEF

Net assets: $3.6bn on Nov 4, 2026 for iShares Defense Industrials and Tech Active ETF, and $88m on Jun 30, 2026 for WisdomTree Europe Defense Fund.

IDEF on its own →WDEF on its own →

At a glance

40.1%

IDEF in the S&P 500

0.0%

WDEF in the S&P 500

−5.8%

IDEF total return, 1 year

−5.6%

WDEF total return, 1 year

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.

WDEF · 1 year to Nov 4, 2026 100% of its weight is outside the S&P 500

0% of WDEF's weight is in S&P 500 companies and 100% is outside the index. Holdings as of Jun 30, 2026.

Pair scorecard

WDEF costs 0.10 points a year less; their one-year returns differ by 0.2 points.

IDEF vs WDEF: Holdings Overlap & Returns
Measure	IDEF	WDEF
Return
Measure	IDEF	WDEF
Total return, 1 year	−5.8%	−5.6%
Drawdown
Measure	IDEF	WDEF
Below its all-time high	19.2%, high on Mar 2, 2026	17.3%, high on Jan 27, 2026
Benchmark
Measure	IDEF	WDEF
What it tracks	Defense	Defense
Cost and size
Measure	IDEF	WDEF
Expense ratio	0.55%	0.45%
Net assets, IDEF as of Nov 4, 2026 and WDEF as of Jun 30, 2026	$3.6bn	$88m
Holdings
Measure	IDEF	WDEF
Holdings in common	19%

Method

What they share

19%

By the books each fund has filed, IDEF and WDEF hold 19% 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

19% in common

Positions both hold · largest shared weight first IDEF WDEF

THALES SA 3.76% 10.04%

ROLLS-ROYCE HOLDINGS PLC 2.27% 5.51%

RHEINMETALL AG 1.67% 8.62%

LEONARDO FINMECCANICA SPA 1.63% 4.74%

AIRBUS GROUP 1.61% 5.29%

KONGSBERG GRUPPEN 1.01% 4.56%

BAE SYSTEMS PLC 0.93% 10.11%

HENSOLDT AG 0.78% 4.09%

BABCOCK INTERNATIONAL GROUP PLC 0.71% 3.07%

QINETIQ GROUP PLC 0.69% 1.39%

CSG CLASS A NV 0.65% 1.24%

DASSAULT AVIATION SA 0.61% 4.10%

Only in one fund ↓

Only in IDEF

RTX 7.41%

LOCKHEED MARTIN 5.42%

GENERAL DYNAMICS CORP 4.39%

NORTHROP GRUMMAN CORP 3.93%

SPACE EXPLORATION TECHNOLOGIES COR 2.77%

PALANTIR TECHNOLOGIES CLASS A 2.67%

SAAB CLASS B 1.95%

PALO ALTO NETWORKS 1.74%

Only in WDEF

SAAB AB 4.78%

INDRA SISTEMAS SA 2.96%

MELROSE INDUSTRIES PLC 2.52%

EXAIL TECHNOLOGIES SA 1.32%

FINCANTIERI SPA 1.29%

THEON INTERNATIONAL PLC 1.26%

SERCO GROUP PLC 0.93%

OHB SE 0.77%

Check overlap with more funds →

Window by window

Window by window: IDEF vs WDEF: Holdings Overlap & Returns
	Total return
Window	IDEF	WDEF
3 months	−14.0%	−10.7%
6 months	−12.4%	−9.1%
1 year	−5.8%	−5.6%
Since launchNot the same days: IDEF May 2025 · WDEF Jul 2025	+18.8%	−4.6%

Open this comparison in the app →

Side by side

IDEF iShares Defense Industrials and Tech Active ETF · Holds 162 stocks in defense, 40% of its weight in S&P 500 companies WDEF WisdomTree Europe Defense Fund · Holds 42 stocks in defense, 0% of its weight in S&P 500 companies

Issuer iShares WisdomTree

Theme Defense Defense

In the S&P 500 40.1% 0.0%

Active share vs the S&P 500 92.6% 100.0%

In the Nasdaq-100 11.2% 0.0%

Holdings 162 42

Top ten, share of the fund 36.3% 63.3%

Expense ratio 0.55% 0.45%

Fee for the differing part 0.59% 0.45%

Total return, 1 year −5.8% −5.6%

vs its benchmark not measured not measured

Below its high −19.2% −17.3%

Net assets, IDEF as of Nov 4, 2026 and WDEF as of Jun 30, 2026 $3.6bn $88m

As of Nov 4, 2026. Source: ETFIQ.

19% of the two portfolios are the same securities at the same weight.

Alert

About each fund

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.

WDEF

By weight, 0% of WDEF's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 100%. The top ten holdings are 63% of the fund across 42 positions, as filed for Jun 30, 2026. Over the year to Nov 4, 2026 the fund returned −5.6% with distributions reinvested. It sits 17.3% below its all-time high of Jan 27, 2026.

Questions people ask

Do IDEF and WDEF hold the same stocks?: By their latest filings, 19% 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, IDEF or WDEF?: IDEF has 40% of its weight in S&P 500 names and WDEF has 0%, so WDEF differs more from the index.
Which is cheaper, IDEF or WDEF?: IDEF charges 0.55% a year and WDEF charges 0.45%, so WDEF is cheaper. Fees come from each fund's prospectus.

Other comparisons

IDEF vs NATO IDEF vs KDEF IDEF vs WDAF IDEF vs MISL WDEF vs XAR WDEF vs ITA WDEF vs WDGF WDEF vs XDEF

Where to next

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

Sources and dates

IDEF filings on SEC EDGAR ↗

IDEF prospectus with the expense ratio (SEC) ↗

iShares page for IDEF ↗

WDEF filings on SEC EDGAR ↗

WDEF prospectus with the expense ratio (SEC) ↗

WisdomTree page for WDEF ↗

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.

Cite this pageCitation, APA and Markdown

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

Open data →

Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms.