The largest quantum computing ETFs
See 4 funds ranked by net assets. Updated Oct 20, 2026. Every fund here is sold on quantum computing. 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 | QTUM | Defiance Quantum ETF | $5.2bn, off scale | 37.4% | +27.0% | 0.40% | Issuer daily, Oct 19, 2026 |
| 2 | WQTM | WisdomTree Quantum Computing Fund | $329m, off scale | 38.5% | −3.2% | 0.45% | SEC filing, Jun 30, 2026 |
| 3 | QTUP | Defiance Long Pure Quantum ETF | $17m | not published | too new | 0.77% | Issuer daily, Oct 19, 2026 |
| 4 | CQTM | Corgi Quantum Computing ETF | $13m | 16.6% | too new | 0.35% | Issuer daily, Oct 20, 2026 |
Method
The 4 ETFs in the quantum computing theme, of which 4 publish net assets, ranked on the most recent figure for each.
The rest of the method
Across the funds listed here the weight held in S&P 500 companies runs from 16.6% to 38.5%. Size shows where the money is, not what a fund did. The list sorts one published figure, with no scoring or weighting. Every fund ETFIQ covers in this category is eligible, closed funds included.
ETFIQ links to the documents behind every figure; a link is not an endorsement. A ranking is not a recommendation or an opinion.
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ETFIQ, The largest quantum computing ETFs, ranked by net assets, data as of Oct 20, 2026. https://etfiq.com/rankings/themes-largest-quantum
ETFIQ. (Oct 20, 2026). The largest quantum computing ETFs, ranked by net assets. Retrieved from https://etfiq.com/rankings/themes-largest-quantum
[The largest quantum computing ETFs, ranked by net assets (ETFIQ, Oct 20, 2026)](https://etfiq.com/rankings/themes-largest-quantum)
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