Do ARTY and IDEF hold the same stocks?

By their latest filings, 8% 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, ARTY or IDEF?

ARTY has 53% of its weight in S&P 500 names and IDEF has 42%, so IDEF differs more from the index.

Which is cheaper, ARTY or IDEF?

ARTY charges 0.47% a year and IDEF charges 0.55%, so ARTY is cheaper. Fees come from each fund's prospectus.

Data as of Oct 28, 2026.

Thematic ETFs

ARTY vs IDEF: Holdings Overlap & Returns

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Over the year to Oct 28, 2026, ARTY returned +47.8% to IDEF's −5.7%; 8% of their weight is in the same names.

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Net assets on Oct 28, 2026: $4.0bn for iShares Future AI & Tech ETF and $3.7bn for iShares Defense Industrials and Tech Active ETF.

ARTY on its own →IDEF on its own →

At a glance

52.8%

ARTY in the S&P 500

42.5%

IDEF in the S&P 500

+47.8%

ARTY total return, 1 year

−5.7%

IDEF total return, 1 year

ARTY · 1 year to Oct 28, 2026 47% of its weight is outside the S&P 500

53% of ARTY's weight is in S&P 500 companies and 47% is outside the index. Holdings as of Oct 27, 2026.

IDEF · 1 year to Oct 28, 2026 58% of its weight is outside the S&P 500

43% of IDEF's weight is in S&P 500 companies and 58% is outside the index. Holdings as of Oct 27, 2026.

Pair scorecard

ARTY costs 0.08 points a year less; their one-year returns differ by 53.5 points; ARTY is 1.1 times larger.

ARTY vs IDEF: Holdings Overlap & Returns
Measure	ARTY	IDEF
Return
Measure	ARTY	IDEF
Total return, 1 year	+47.8%	−5.7%
Drawdown
Measure	ARTY	IDEF
Below its all-time high	8.3%, high on Oct 6, 2026	17.0%, high on Mar 2, 2026
Benchmark
Measure	ARTY	IDEF
What it tracks	Artificial intelligence	Defense
Cost and size
Measure	ARTY	IDEF
Expense ratio	0.47%	0.55%
Net assets	$4.0bn	$3.7bn
Holdings
Measure	ARTY	IDEF
Holdings in common	8%

Holdings in common uses holdings dated Oct 27, 2026. Method

Risk and return

May 30, 2025 to Oct 23, 2026 · 73 weekly returns

ARTY IDEF

Return

Total return edge ARTY +87.6% +14.9%

Annualized edge ARTY +56.5% +10.4%

Price return edge ARTY +87.5% +14.5%

Risk

Volatility edge IDEF 31.3% 22.4%

Max drawdown edge Tie −17.1% −17.1%

Risk-adjusted

Sharpe edge ARTY 1.47 0.38

Sortino edge ARTY 2.35 0.58

Calmar edge ARTY 3.31 0.61

Reading

ARTY returned more: +87.6% to +14.9%. IDEF swung less: 22.4% to 31.3%. ARTY and IDEF fell about the same at their worst: −17.1% and −17.1%.

Full scorecard

9 measures, with how each is measured Open ↓

Risk and return: ARTY vs IDEF: Holdings Overlap & Returns
Measure	ARTY	IDEF	Edge	How it is measured
Return
Total return	+87.6%	+14.9%	ARTY	Price change plus distributions, reinvested.
Annualized	+56.5%	+10.4%	ARTY	Total return as a yearly rate.
Price return	+87.5%	+14.5%	ARTY	Price change alone, distributions left out.
Risk
Volatility	31.3%	22.4%	IDEF	Spread of weekly returns, annualized. Lower is steadier.
Downside deviation	19.6%	14.7%	IDEF	Like volatility, counting only weeks below the Treasury bill rate.
Max drawdown	−17.1%	−17.1%	Tie	Deepest fall from a high to the low after it.
Risk-adjusted
Sharpe	1.47	0.38	ARTY	Return above Treasury bills per unit of volatility.
Sortino	2.35	0.58	ARTY	Return above Treasury bills per unit of downside deviation.
Calmar	3.31	0.61	ARTY	Annualized return divided by the max drawdown.

Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 73 weekly returns. Cash rate: the 13-week Treasury bill.

What they share

By the books each fund has filed, ARTY and IDEF hold 8% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.

50%

0 half 100%

half

8% in common

Positions both hold · largest shared weight first ARTY IDEF

PALANTIR TECHNOLOGIES CLASS A 3.12% 3.02%

SPACE EXPLORATION TECHNOLOGIES COR 2.74% 2.93%

MICROSOFT 3.00% 1.34%

BROADCOM INC 4.59% 0.55%

ADVANCED MICRO DEVICES 5.59% 0.34%

INTERNATIONAL BUSINESS MACHINES CO 2.91% 0.13%

MARVELL TECHNOLOGY 5.17% 0.12%

NASDAQ 100 E-MINI DEC 26 0.00% 0.00%

Only in one fund ↓

Only in ARTY

NVIDIA 4.65%

TAIWAN SEMICONDUCTOR MANUFACTURING 4.55%

MICRON TECHNOLOGY 4.36%

ORACLE 3.90%

GLOBAL UNICHIP 3.78%

SUPER MICRO COMPUTER INC 3.26%

NAVER 3.21%

COREWEAVE CLASS A 3.16%

Only in IDEF

RTX 7.05%

LOCKHEED MARTIN 5.27%

GENERAL DYNAMICS CORP 4.15%

NORTHROP GRUMMAN CORP 3.92%

BOEING 3.44%

ROLLS-ROYCE HOLDINGS PLC 3.06%

AIRBUS GROUP 2.34%

THALES SA 2.15%

Check overlap with more funds →

Window by window

Window by window: ARTY vs IDEF: Holdings Overlap & Returns
	Total return
Window	ARTY	IDEF
3 months	+21.4%	−3.0%
6 months	+22.9%	−5.8%
1 year	+47.8%	−5.7%
3 years	+165.2%	–
Since launchNot the same days: ARTY Jun 2018 · IDEF May 2025	+235.5%	+22.1%

– means no data for this window. Open this comparison in the app →

Side by side

ARTY iShares Future AI & Tech ETF · Holds 51 stocks in artificial intelligence, 53% of its weight in S&P 500 companies IDEF iShares Defense Industrials and Tech Active ETF · Holds 155 stocks in defense, 42% of its weight in S&P 500 companies

Issuer iShares iShares

Theme Artificial intelligence Defense

In the S&P 500 52.8% 42.5%

Active share vs the S&P 500 83.2% 92.2%

In the Nasdaq-100 36.9% 10.7%

Holdings 51 155

Top ten, share of the fund 43.1% 37.3%

Expense ratio 0.47% 0.55%

Fee for the differing part 0.56% 0.60%

Total return, 1 year +47.8% −5.7%

vs its benchmark not measured not measured

Below its high −8.3% −17.0%

Net assets $4.0bn $3.7bn

As of Oct 28, 2026. Source: ETFIQ.

8% of the two portfolios are the same securities at the same weight.

Client brief · page 1 of 2 Report BR-AF351B01FF

ARTY and IDEF are built for the same job. How do they differ in cost, holdings and results?

Theme. ARTY covers Artificial intelligence and IDEF covers Defense.
What each follows. ARTY follows Artificial intelligence and IDEF follows Defense.
Holdings in common. 8% of the weight is in the same securities (holdings dated Oct 27, 2026).

Data as of Oct 28, 2026.

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About each fund

ARTY

By weight, 53% of ARTY's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 83%. The top ten holdings are 43% of the fund across 51 positions, as published by its issuer for Oct 27, 2026. Over the year to Oct 28, 2026 the fund returned +47.8% with distributions reinvested. It sits 8.3% below its all-time high of Oct 6, 2026.

IDEF

By weight, 42% of IDEF's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 92%. The top ten holdings are 37% of the fund across 155 positions, as published by its issuer for Oct 27, 2026. Over the year to Oct 28, 2026 the fund returned −5.7% with distributions reinvested. It sits 17.0% below its all-time high of Mar 2, 2026.

Questions people ask

Do ARTY and IDEF hold the same stocks?: By their latest filings, 8% 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, ARTY or IDEF?: ARTY has 53% of its weight in S&P 500 names and IDEF has 42%, so IDEF differs more from the index.
Which is cheaper, ARTY or IDEF?: ARTY charges 0.47% a year and IDEF charges 0.55%, so ARTY is cheaper. Fees come from each fund's prospectus.

Other comparisons

ARTY vs PPA ARTY vs ITA ARTY vs XAR ARTY vs SHLD IDEF vs AIQ IDEF vs BAI IDEF vs IFRA IDEF vs BOTZ

Where to next

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

Sources and dates

ARTY filings on SEC EDGAR ↗

ARTY prospectus with the expense ratio (SEC) ↗

iShares page for ARTY ↗

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.

Cite this pageCitation, APA and Markdown

ETFIQ, ARTY against IDEF, data as of Oct 28, 2026. https://etfiq.com/compare/themes/arty-vs-idef

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