Do AMMO and IDEF hold the same stocks?

By their latest filings, 26% 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, AMMO or IDEF?

AMMO has 17% of its weight in S&P 500 names and IDEF has 40%, so AMMO differs more from the index.

Which is cheaper, AMMO or IDEF?

AMMO charges 0.75% a year and IDEF charges 0.55%, so IDEF is cheaper. Fees come from each fund's prospectus.

Data as of Nov 4, 2026.

Thematic ETFs

AMMO vs IDEF: Holdings Overlap & Returns

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AMMO and IDEF hold 26% of their weight in the same names.

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Net assets on Nov 4, 2026: $2.4m for VistaShares Defense Supercycle ETF and $3.6bn for iShares Defense Industrials and Tech Active ETF.

AMMO on its own →IDEF on its own →

At a glance

17.4%

AMMO in the S&P 500

40.1%

IDEF in the S&P 500

−10.6%

AMMO total return, since launch, Jul 16, 2026

−5.8%

IDEF total return, 1 year

AMMO · 3 months to Nov 4, 2026 83% of its weight is outside the S&P 500

17% of AMMO's weight is in S&P 500 companies and 83% is outside the index. Holdings as of Nov 4, 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

IDEF costs 0.20 points a year less; IDEF is far larger, $3.6bn against $2.4m.

AMMO vs IDEF: Holdings Overlap & Returns
Measure	AMMO	IDEF
Return
Measure	AMMO	IDEF
Total return, 1 year	not published	−5.8%
Drawdown
Measure	AMMO	IDEF
Below its all-time high	23.7%, high on Aug 14, 2026	19.2%, high on Mar 2, 2026
Benchmark
Measure	AMMO	IDEF
What it tracks	Defense	Defense
Cost and size
Measure	AMMO	IDEF
Expense ratio	0.75%	0.55%
Net assets	$2.4m	$3.6bn
Holdings
Measure	AMMO	IDEF
Holdings in common	26%

Method

What they share

26%

By the books each fund has filed, AMMO and IDEF hold 26% of their money in the same securities at the same weight. Holdings dated Nov 3, 2026 and Nov 4, 2026.

50%

0 half 100%

half

26% in common

Positions both hold · largest shared weight first AMMO IDEF

Palantir Technologies Inc 3.42% 2.67%

Rheinmetall AG 4.09% 1.67%

LEONARDO-FINMECCANICA SPA 2.00% 1.63%

RTX Corp 1.59% 7.41%

Rolls-Royce Holdings PLC 1.52% 2.27%

Elbit Systems Ltd 2.66% 1.15%

TransDigm Group Inc 2.76% 1.12%

Hanwha Systems Co Ltd 1.33% 1.06%

Howmet Aerospace Inc 0.87% 0.86%

Hensoldt AG 2.69% 0.78%

L3Harris Technologies Inc 2.94% 0.75%

CAE Inc 0.68% 0.72%

Only in one fund ↓

Only in AMMO

Mildef Group AB 4.50%

Kitron ASA 3.66%

Cohort PLC 3.37%

Kongsberg Gruppen ASA 2.48%

Saab AB 2.39%

Theon International PLC 2.36%

Indra Sistemas SA 1.80%

Avio SpA 1.62%

Only in IDEF

LOCKHEED MARTIN 5.42%

GENERAL DYNAMICS CORP 4.39%

NORTHROP GRUMMAN CORP 3.93%

THALES SA 3.76%

SPACE EXPLORATION TECHNOLOGIES COR 2.77%

SAAB CLASS B 1.95%

PALO ALTO NETWORKS 1.74%

CROWDSTRIKE HOLDINGS CLASS A 1.62%

Check overlap with more funds →

Window by window

Window by window: AMMO vs IDEF: Holdings Overlap & Returns
	Total return
Window	AMMO	IDEF
3 months	−19.6%	−14.0%
6 months	–	−12.4%
1 year	–	−5.8%
Since launchNot the same days: AMMO Jul 2026 · IDEF May 2025	−10.6%	+18.8%

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Side by side

AMMO VistaShares Defense Supercycle ETF · Holds 53 stocks in defense, 17% 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 VistaShares iShares

Theme Defense Defense

In the S&P 500 17.4% 40.1%

Active share vs the S&P 500 98.6% 92.6%

In the Nasdaq-100 4.9% 11.2%

Holdings 53 162

Top ten, share of the fund 33.8% 36.3%

Expense ratio 0.75% 0.55%

Fee for the differing part 0.76% 0.59%

Total return, 1 year −10.6% (since launch, Jul 16, 2026) −5.8%

vs its benchmark not measured not measured

Below its high −23.7% −19.2%

Net assets $2.4m $3.6bn

As of Nov 4, 2026. Source: ETFIQ.

26% of the two portfolios are the same securities at the same weight.

Alert

About each fund

AMMO

By weight, 17% of AMMO's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 99%. The top ten holdings are 34% of the fund across 53 positions, as published by its issuer for Nov 4, 2026. Since it first traded on Jul 16, 2026 the fund returned −10.6% with distributions reinvested. It sits 23.7% below its all-time high of Aug 14, 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 AMMO and IDEF hold the same stocks?: By their latest filings, 26% 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, AMMO or IDEF?: AMMO has 17% of its weight in S&P 500 names and IDEF has 40%, so AMMO differs more from the index.
Which is cheaper, AMMO or IDEF?: AMMO charges 0.75% a year and IDEF charges 0.55%, so IDEF is cheaper. Fees come from each fund's prospectus.

Other comparisons

AMMO vs XAR AMMO vs SHLD AMMO vs PPA AMMO vs EUAD IDEF vs DUTY IDEF vs XDEF IDEF vs WDGF IDEF vs WR

Where to next

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

Sources and dates

AMMO filings on SEC EDGAR ↗

AMMO prospectus with the expense ratio (SEC) ↗

VistaShares page for AMMO ↗

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

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