Ranked by net assets, as of . Rebuilt every trading night.
The largest thematic ETFs
How much of a thematic fund’s weight sits in companies the S&P 500 already holds is the question to ask before buying it alongside an index fund.
| # | Ticker | Fund | Theme | Net assets | Weight in S&P 500 companies | Fee | Source |
|---|---|---|---|---|---|---|---|
| 1 | SMH | VanEck Semiconductor ETF | Semiconductors | $77.2bn | 82.3% | 0.35% | SEC filing, whole fund |
| 2 | SOXX | iShares Semiconductor ETF | Semiconductors | $47.8bn | 73.8% | 0.33% | SEC filing, whole fund |
| 3 | DRAM | Roundhill Memory ETF | Memory and storage | $25.9bn | 20.0% | 0.65% | SEC filing, whole fund |
| 4 | GDX | VanEck Gold Miners ETF | Miners and metals | $22.8bn | 11.0% | 0.51% | SEC filing, whole fund |
| 5 | ITA | iShares U.S. Aerospace & Defense ETF | Defense | $14.4bn | 79.5% | 0.37% | SEC filing, whole fund |
| 6 | CIBR | First Trust NASDAQ Cybersecurity ETF | Cybersecurity | $13.8bn | 62.2% | 0.58% | SEC filing, whole fund |
| 7 | IGV | iShares Expanded Tech-Software Secto | Cloud and software | $13.5bn | 82.2% | 0.38% | SEC filing, whole fund |
| 8 | PAVE | Global X U.S. Infrastructure Develop | Infrastructure | $13.5bn | 63.1% | 0.47% | SEC filing, whole fund |
| 9 | BAI | iShares A.I. Innovation and Tech Act | Artificial intelligence | $13.4bn | 54.8% | 0.55% | SEC filing, whole fund |
| 10 | GRID | First Trust NASDAQ Clean Edge Smart | Electrification and the grid | $12.1bn | 40.0% | 0.56% | SEC filing, whole fund |
| 11 | AIRR | First Trust RBA American Industrial | Reshoring and manufacturing | $11.5bn | 5.5% | 0.69% | SEC filing, whole fund |
| 12 | AIQ | Global X Artificial Intelligence & T | Artificial intelligence | $10.9bn | 55.9% | 0.68% | SEC filing, whole fund |
| 13 | PPA | Invesco Aerospace & Defense ETF | Defense | $8.0bn | 71.8% | 0.58% | SEC filing, whole fund |
| 14 | SHLD | Global X Defense Tech ETF | Defense | $8.0bn | 40.5% | 0.50% | SEC filing, whole fund |
| 15 | URA | Global X Uranium ETF | Nuclear and uranium | $7.8bn | 0.0% | 0.69% | SEC filing, whole fund |
Method
Ranked on the most recent net assets ETFIQ can source for each fund, with the kind of source named beside it. 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.
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Where these figures came from
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A ranking is not a recommendation and no order on this site is an opinion. ETFIQ is an independent publisher, not an adviser. Standards and sources
Cite this page. ETFIQ, The largest thematic ETFs, ranked by net assets, data as of Sep 11, 2026. https://etfiq.com/rankings/themes-biggest Free to use with attribution; the underlying files are at Open data.