Best Quantum Computing ETFs

Quantum computing is a genuinely early industry. The companies building actual quantum hardware are few, small, and mostly pre-revenue, which means there are not enough of them to fill a diversified fund on their own. So almost every “quantum” ETF solves that by holding a large base of established technology companies that happen to have a quantum research arm, names like Nvidia, Microsoft, Alphabet, IBM, and Honeywell, alongside a smaller slice of the genuine pure-plays.

The practical effect is that most quantum ETFs behave more like a broad technology or AI fund than a concentrated bet on quantum computing itself. That is not a flaw, it is how the funds manage risk, but it matters for expectations: if you buy a quantum ETF hoping for the explosive moves you see in the pure-play stocks, you will likely be surprised by how much it tracks big tech instead. Knowing what is actually inside the fund is the whole game here.

QTUM, the Defiance Quantum ETF, is the established choice and by far the largest fund in the category, with several billion dollars in assets and roughly 80 to 90 holdings. It tracks an index of quantum-computing and machine-learning companies and charges around 0.40%. It is the most liquid way to get exposure to the theme, which is why it is the default for most investors who want a quantum tilt without picking individual stocks.

The thing to understand is what is inside. QTUM's weight leans heavily toward large-cap technology: familiar names like Nvidia, Apple, Microsoft, Alphabet, and IBM sit alongside the pure-play quantum companies. That makes QTUM a broad tech fund with a quantum theme rather than a concentrated quantum bet. The upside is diversification and liquidity; the trade-off is that you are not getting much direct exposure to the small quantum pure-plays. This is descriptive, not a recommendation to buy any particular fund.

A handful of funds launched in late 2025 aiming for more thematic purity. WQTM (the WisdomTree Quantum Computing Fund) charges around 0.45% and tilts a larger share of its weight toward pure-play quantum names than QTUM does, though it still holds a meaningful slice of established technology. CHPX (the Global X AI Semiconductor and Quantum ETF) charges around 0.50% and blends AI-semiconductor exposure with quantum, so it is as much a chip fund as a quantum one.

Both are much smaller and younger than QTUM, which means less trading liquidity and no long track record to judge them by. The appeal is a more concentrated thematic bet; the cost is the extra risk that comes with new, small funds and the heavier exposure to volatile pure-play names. BlackRock also launched the iShares Quantum Computing fund (QANT) in late 2025, but that is a European UCITS listing and is generally not available to US retail investors. Verify current availability with your own broker before assuming you can buy any of these.

If you want a direct bet on quantum computing rather than a diluted theme fund, the route is individual stocks: IonQ (IONQ), Rigetti Computing (RGTI), D-Wave Quantum (QBTS), and Quantum Computing Inc. (QUBT) are the most cited pure-plays. These are small companies building quantum hardware and software, and most have little or no profit and burn cash while the technology matures. They are not diversified funds; each is a single-company bet on an unproven market.

That makes them among the most speculative and volatile names on the market. Their share prices have swung enormously on news, partnerships, and sentiment rather than on earnings, and a true commercial payoff from quantum computing could be years away, if it arrives at the scale investors hope at all. The upside is concentrated if the technology delivers; the downside is just as concentrated if it does not. This is a very different risk profile from any diversified ETF, and it is descriptive, not a prediction.

Costs are approximate expense ratios as of mid 2026; verify the current figure on each issuer's site. QTUM is the largest and most liquid but is mostly big-cap tech; WQTM and CHPX are newer and tilt more toward pure-play and AI-chip names, with smaller assets and shorter histories. QANT is a European UCITS fund that US retail investors generally cannot buy. The pure-play stocks (IONQ, RGTI, QBTS) are individual companies, not funds, and carry far higher risk. You can explore the underlying theme on our quantum computing theme page.

The hard part of quantum is not finding a fund; QTUM is the obvious broad option, and WQTM or CHPX are the more thematic ones. The harder questions are whether a speculative theme like quantum belongs in your portfolio at all, how small a slice makes sense given how volatile it is, and whether a broad fund or individual pure-plays match your risk tolerance. Those answers depend on what you already own and what you are trying to do, which is where an AI assistant that can reason over your real holdings helps.

That is where Walnut fits. It connects your existing brokerage through SnapTrade so you can ask, in plain language through Claude, ChatGPT, or a built-in assistant, how a quantum fund like QTUM would fit alongside what you already hold, how much a speculative sleeve would move the overall risk of your portfolio, and how the theme is doing against the broad market. Walnut keeps your accounts read-only, so a quantum position is only ever added when you place that order. As something that informs rather than advises, it sizes the question against your real holdings instead of recommending a fund, because Walnut is not an investment adviser.

Quantum ETFs come down to a trade-off between breadth and purity. QTUM is the largest and most liquid at around 0.40%, but it is mostly large-cap technology with only a small slice of true quantum. WQTM and CHPX are newer and lean more into pure-play and AI-chip names at around 0.45% to 0.50%, with smaller assets and shorter track records. For a direct bet, the individual pure-play stocks (IonQ, Rigetti, D-Wave) offer concentrated exposure and concentrated risk on small, mostly pre-revenue companies.

The honest framing is the same across all of them: quantum computing is an early, unproven market, the funds are more diversified-tech than pure quantum, and the pure-plays are highly speculative, which is why most investors who touch the theme size it as a small slice. From a connected account you can dig into any of these as an ETF, or compare the theme against the rest of your portfolio. Holdings, fees, and availability change; treat the specifics here as a starting point and confirm on each provider's site before deciding. For the full category map, see our best ETF in every category guide.