Do IDEF and IGV hold the same stocks?

By their latest filings, 9% 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 IGV?

IDEF has 42% of its weight in S&P 500 names and IGV has 80%, so IGV differs more from the index.

Which is cheaper, IDEF or IGV?

IDEF charges 0.55% a year and IGV charges 0.38%, so IGV is cheaper. Fees come from each fund's prospectus.

Data as of Oct 28, 2026.

Thematic ETFs

IDEF vs IGV: Holdings Overlap & Returns

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Over the year to Oct 28, 2026, IDEF returned −5.7% to IGV's −4.1%; 9% of their weight is in the same names.

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Net assets: $3.7bn on Oct 28, 2026 for iShares Defense Industrials and Tech Active ETF, and $14.4bn on Oct 27, 2026 for iShares Expanded Tech-Software Sector ETF.

IDEF on its own →IGV on its own →

At a glance

42.5%

IDEF in the S&P 500

80.3%

IGV in the S&P 500

−5.7%

IDEF total return, 1 year

−4.1%

IGV total return, 1 year

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.

IGV · 1 year to Oct 28, 2026 20% of its weight is outside the S&P 500

80% of IGV's weight is in S&P 500 companies and 20% is outside the index. Holdings as of Oct 27, 2026.

Pair scorecard

IGV costs 0.17 points a year less; their one-year returns differ by 1.6 points; IGV is 3.9 times larger.

IDEF vs IGV: Holdings Overlap & Returns
Measure	IDEF	IGV
Return
Measure	IDEF	IGV
Total return, 1 year	−5.7%	−4.1%
Drawdown
Measure	IDEF	IGV
Below its all-time high	17.0%, high on Mar 2, 2026
Benchmark
Measure	IDEF	IGV
What it tracks	Defense	Cloud and software
Cost and size
Measure	IDEF	IGV
Expense ratio	0.55%	0.38%
Net assets, as of Oct 27, 2026	$3.7bn	$14.4bn
Holdings
Measure	IDEF	IGV
Holdings in common	9%

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

Risk and return

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

IDEF IGV

Return

Total return edge IDEF +14.9% +6.7%

Annualized edge IDEF +10.4% +4.7%

Price return edge IDEF +14.5% +6.7%

Risk

Volatility edge IDEF 22.4% 31.6%

Max drawdown edge IDEF −17.1% −36.3%

Risk-adjusted

Sharpe edge IDEF 0.38 0.18

Sortino edge IDEF 0.58 0.27

Calmar edge IDEF 0.61 0.13

Reading

IDEF returned more: +14.9% to +6.7%. IDEF swung less: 22.4% to 31.6%. IDEF fell less at its worst: −17.1% to −36.3%.

Full scorecard

9 measures, with how each is measured Open ↓

Risk and return: IDEF vs IGV: Holdings Overlap & Returns
Measure	IDEF	IGV	Edge	How it is measured
Return
Total return	+14.9%	+6.7%	IDEF	Price change plus distributions, reinvested.
Annualized	+10.4%	+4.7%	IDEF	Total return as a yearly rate.
Price return	+14.5%	+6.7%	IDEF	Price change alone, distributions left out.
Risk
Volatility	22.4%	31.6%	IDEF	Spread of weekly returns, annualized. Lower is steadier.
Downside deviation	14.7%	21.2%	IDEF	Like volatility, counting only weeks below the Treasury bill rate.
Max drawdown	−17.1%	−36.3%	IDEF	Deepest fall from a high to the low after it.
Risk-adjusted
Sharpe	0.38	0.18	IDEF	Return above Treasury bills per unit of volatility.
Sortino	0.58	0.27	IDEF	Return above Treasury bills per unit of downside deviation.
Calmar	0.61	0.13	IDEF	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, IDEF and IGV hold 9% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.

50%

0 half 100%

half

9% in common

Positions both hold · largest shared weight first IDEF IGV

PALANTIR TECHNOLOGIES CLASS A 3.02% 9.10%

PALO ALTO NETWORKS 1.46% 9.30%

MICROSOFT 1.34% 8.39%

CROWDSTRIKE HOLDINGS CLASS A 1.30% 8.55%

FORTINET 0.85% 3.76%

ZSCALER 0.52% 0.90%

SERVICENOW 0.09% 4.85%

Only in one fund ↓

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%

SPACE EXPLORATION TECHNOLOGIES COR 2.93%

AIRBUS GROUP 2.34%

Only in IGV

ORACLE 6.27%

SALESFORCE 4.05%

ADOBE INC 3.26%

CADENCE DESIGN SYSTEMS 3.12%

DATADOG INC CLASS A 3.10%

SYNOPSYS 3.00%

INTUIT 2.96%

APPLOVIN CLASS A 2.35%

Check overlap with more funds →

Window by window

Window by window: IDEF vs IGV: Holdings Overlap & Returns
	Total return
Window	IDEF	IGV
3 months	−3.0%	+21.2%
6 months	−5.8%	+32.5%
1 year	−5.7%	−4.1%
3 years	–	+70.0%
Since launchNot the same days: IDEF May 2025 · IGV Jul 2001	+22.1%	+1,015.0%

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Side by side

IDEF iShares Defense Industrials and Tech Active ETF · Holds 155 stocks in defense, 42% of its weight in S&P 500 companies IGV iShares Expanded Tech-Software Sector ETF · Holds 108 stocks in cloud and software, 80% of its weight in S&P 500 companies

Issuer iShares iShares

Theme Defense Cloud and software

In the S&P 500 42.5% 80.3%

Active share vs the S&P 500 92.2% 92.4%

In the Nasdaq-100 10.7% 65.1%

Holdings 155 108

Top ten, share of the fund 37.3% 60.7%

Expense ratio 0.55% 0.38%

Fee for the differing part 0.60% 0.41%

Total return, 1 year −5.7% −4.1%

vs its benchmark not measured not measured

Below its high −17.0% −5.0%

Net assets, IDEF as of Oct 28, 2026 and IGV as of Oct 27, 2026 $3.7bn $14.4bn

As of Oct 28, 2026. Source: ETFIQ.

9% of the two portfolios are the same securities at the same weight.

Client brief · page 1 of 2 Report BR-1DC97C88E6

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

Theme. IDEF covers Defense and IGV covers Cloud and software.
Concentration. The top ten holdings are 37.3% of IDEF and 60.7% of IGV, a gap of 23.4 points.
What each follows. IDEF follows Defense and IGV follows Cloud and software.

Data as of Oct 28, 2026.

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About each fund

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.

IGV

By weight, 80% of IGV'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 61% of the fund across 108 positions, as published by its issuer for Oct 27, 2026. Over the year to Oct 28, 2026 the fund returned −4.1% with distributions reinvested.

Questions people ask

Do IDEF and IGV hold the same stocks?: By their latest filings, 9% 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 IGV?: IDEF has 42% of its weight in S&P 500 names and IGV has 80%, so IGV differs more from the index.
Which is cheaper, IDEF or IGV?: IDEF charges 0.55% a year and IGV charges 0.38%, so IGV is cheaper. Fees come from each fund's prospectus.

Other comparisons

IDEF vs IBB IDEF vs CIBR IDEF vs DRAM IDEF vs AIRR IGV vs XAR IGV vs SHLD IGV vs PPA IGV vs ITA

Where to next

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

Sources and dates

IDEF filings on SEC EDGAR ↗

IDEF prospectus with the expense ratio (SEC) ↗

iShares page for IDEF ↗

IGV filings on SEC EDGAR ↗

IGV prospectus with the expense ratio (SEC) ↗

iShares page for IGV ↗

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 IGV, data as of Oct 28, 2026. https://etfiq.com/compare/themes/idef-vs-igv

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