Hours earlier, US-listed IonQ Inc (NYSE: IONQ) delivered the biggest quarter in its history.

Now, the VanEck Quantum ETF (ASX: QNTM) now gives local investors direct access to the theme.

What the new quantum computing ETF actually holds

QNTM tracks the MarketVector Quantum Computing Ecosystem Index.

The index targets businesses building quantum hardware, quantum software, and the components that support both.

That is a wide net that captures early-stage pure plays alongside far larger technology companies running quantum research programs.

The fund charges a management fee of 0.65% per year, which is expensive next to a broad index fund, though not unusual for a narrow thematic product.

QNTM listed alongside two siblings on 6 August.

One covers global semiconductors at 0.35%, while the other holds rare earths and strategic metals at 0.59%.

VanEck's Asia-Pacific chief executive Arian Neiron pitched the trio on their thematic appeal rather than their breadth.

The launches land in a record year for Australian ETFs, with the local industry closing the financial year at $372 billion in funds under management.

Recent earnings: inside IonQ's record quarter

IonQ is the most visible pure-play name in the sector, and its second-quarter numbers were astounding.

Revenue reached US$80.1 million, up 287% year-on-year, and came in a full 20% ahead of the company's own guidance. Encouragingly, organic revenue growth (revenue growth outside of acquisitions) was 132%.

Chief executive Niccolo de Masi described it as "the strongest quarter in our company's history".

Management also lifted full-year 2026 revenue guidance to a range of US$280 million to US$290 million, while remaining performance obligations climbed to US$485 million, up from US$122 million a year earlier.

Yet despite all of this, IonQ reported a GAAP net loss of US$1.9 billion for the quarter.

Most of that was a US$1.6 billion non-cash movement on warrant valuations, so the headline figure overstates the operating position. But adjusted EBITDA was still negative US$120.3 million.

Record revenue and heavy losses are arriving together, which is entirely normal for an industry at this stage of its life.

The catch with this quantum computing ETF

Quantum computing is a technology still waiting for its commercial breakthrough.

Revenue growth of 287% sounds spectacular, and it is, but it is also growth from a very small base funded by shareholders rather than by profits.

A quantum computing ETF does spread that risk across many companies, but it does not remove it.

If the commercial breakthrough takes another decade, a diversified basket of loss-making innovators will still struggle.

QNTM is also brand new, so there is no performance record to assess.

This is where position sizing comes into play.

Something like the Vanguard Australian Shares Index ETF (ASX: VAS) does a very different job in a portfolio, holding roughly 300 established Australian businesses that are profitable today.

A speculative theme works best as a small satellite around a core like VAS.

Foolish takeaway

IonQ's result is evidence that quantum computing is starting to generate real revenue.

It is not yet evidence that the industry can generate real profits, and the gap between those two things is where thematic investors most often get hurt.

If the theme interests you, the new quantum computing ETF is a reasonable way to access it.

I would size the position as though it may not work.

But I would also keep the bulk of your capital somewhere diversified and, frankly, a little boring.

The post IonQ just posted record revenue. What does it mean for the ASX's newest quantum computing ETF? appeared first on The Motley Fool Australia.