Themes · ranked by net assets

The largest water ETFs

Every fund here is sold on water. What each one holds, and how much of it the S&P 500 already holds for you, is the column beside the size.

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#	Ticker	Fund	Net assets ↓	Weight in S&P 500 companies	Total return, 1Y	Fee	Source
1	PHO	Invesco Water Resources ETF	$1.9bn	61.3%	−5.8%	0.59%	Issuer holdings, Oct 3, 2026
2	FIW	First Trust Water ETF	$1.7bn	48.1%	−7.0%	0.50%	Issuer page, Oct 2, 2026
3	CGW	Invesco S&P Global Water Index ETF	$1.0bn	25.6%	−0.3%	0.58%	Issuer holdings, Oct 3, 2026
4	PIO	Invesco Global Water ETF	$262m	39.1%	−3.1%	0.75%	Issuer holdings, Oct 3, 2026
5	AQWA	Global X Clean Water ETF	$20m	19.5%	−5.4%	0.50%	Issuer daily, Oct 2, 2026

The largest water ETFs, ranked by net assets, as of Oct 2, 2026. Source: ETFIQ.

Method

The 6 ETFs in the water theme, of which 5 publish net assets, ranked on the most recent figure for each. Across the funds listed here the weight held in S&P 500 companies runs from 19.5% to 61.3%. Size is not a measure of anything a fund did. It is where the money is. The ranking is the published field sorted, nothing else: no scoring, no weighting and no view on any fund. Every fund ETFIQ covers in this category is eligible, including funds that have closed, because leaving them out would flatter the category.

How these figures are computed →Standards and sources →

Where to next

Every water ETF and what it holds→The thematic ETFs least like the S&P 50015 →

Where these figures came from

Fund holdings from SEC Form N-PORT and from the issuers own daily files ↗SEC EDGAR, full-text search of fund filings ↗SEC Form N-PORT, what a fund filed it holds ↗Rule 19a-1, what a distribution notice must say ↗

ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement. A ranking is not a recommendation and no order on this site is an opinion. ETFIQ is an independent publisher, not an adviser.

Cite this page

ETFIQ, The largest water ETFs, ranked by net assets, data as of Oct 2, 2026. https://etfiq.com/rankings/themes-largest-water

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Free to use with attribution; the underlying files are at Open data.