The largest thematic ETFs

See 15 funds ranked by net assets. Updated Oct 27, 2026. Before buying a thematic fund beside an index fund, ask how much of it the S&P 500 already holds.

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The thematic ETFs least like the S&P 500 Ask IQ about this list Download CSV

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Net assets, one bar per fund

firstlast

$66.6bn

first, SMH

$8.2bn

last, AIRR

funds in the list

All 15, highest first

15 of 15 · click a column to sort

The largest thematic ETFs
#	Ticker	Fund	Theme	Net assets ↓	Weight in S&P 500 companies	Fee	Source
1	SMH	VanEck Semiconductor ETF	Semiconductors	$66.6bn	79.3%	0.35%	ETFIQ, shares × NAV, Oct 23, 2026
2	SOXX	iShares Semiconductor ETF	Semiconductors	$46.4bn	74.5%	0.33%	Issuer daily, Oct 26, 2026
3	GDX	VanEck Gold Miners ETF	Gold miners	$24.7bn	11.7%	0.51%	ETFIQ, shares × NAV, Oct 23, 2026
4	DRAM	Roundhill Memory ETF	Memory and storage	$19.2bn	15.7%	0.65%	Issuer daily, Oct 27, 2026
5	CIBR	First Trust NASDAQ Cybersecurity ETF	Cybersecurity	$18.8bn	60.6%	0.58%	Issuer page, Oct 26, 2026
6	IGV	iShares Expanded Tech-Software Secto	Cloud and software	$14.3bn	80.1%	0.38%	Issuer daily, Oct 26, 2026
7	PAVE	Global X U.S. Infrastructure Develop	Infrastructure	$13.6bn	62.1%	0.47%	Issuer page, Oct 12, 2026
8	BAI	iShares A.I. Innovation and Tech Act	Artificial intelligence	$13.2bn	54.9%	0.55%	Issuer daily, Oct 27, 2026
9	ITA	iShares U.S. Aerospace & Defense ETF	Defense	$12.0bn	81.2%	0.37%	Issuer daily, Oct 27, 2026
10	GRID	First Trust NASDAQ Clean Edge Smart	Electrification and the grid	$11.1bn	40.9%	0.56%	Issuer page, Oct 26, 2026
11	IGF	iShares Global Infrastructure ETF	Infrastructure	$10.8bn	31.8%	0.37%	Issuer daily, Oct 26, 2026
12	IBB	iShares Biotechnology ETF	Biotech	$10.7bn	40.4%	0.44%	Issuer daily, Oct 26, 2026
13	AIQ	Global X Artificial Intelligence & T	Artificial intelligence	$10.6bn	64.7%	0.68%	Issuer page, Oct 12, 2026
14	XBI	State Street SPDR S&P Biotech ETF	Biotech	$10.2bn	13.4%	0.35%	Issuer daily, Oct 26, 2026
15	AIRR	First Trust RBA American Industrial	Reshoring and manufacturing	$8.2bn	14.7%	0.69%	Issuer page, Oct 26, 2026

As of Oct 27, 2026. Source: ETFIQ.CSV Method

Method

Ranked on the most recent net assets ETFIQ can source for each fund, with the kind of source named beside it.

The rest of the method

Size shows where the money is, not what a fund did. The list sorts one published number, with no scoring or weighting. Every fund ETFIQ covers in this category is eligible, closed funds included.

How these numbers are computed →Standards and sources →

Where to next

The thematic ETFs least like the S&P 50015 →Every thematic ETF414 →

Sources and dates

Fund holdings from SEC Form N-PORT and from the issuers’ own daily filessec.gov ↗

SEC EDGAR, full-text search of fund filingsefts.sec.gov ↗

SEC Form N-PORT, what a fund filed it holdssec.gov ↗

Rule 19a-1, what a distribution notice must sayecfr.gov ↗

Links are sources, not endorsements. A ranking is not a recommendation or an opinion.

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ETFIQ, The largest thematic ETFs, ranked by net assets, data as of Oct 27, 2026. https://etfiq.com/rankings/themes-biggest

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Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms. The underlying files are at Open data.