Is IonQ Stock a Buy?

Key Points

• IonQ's trapped-ion quantum computers just hit #AQ 64 performance ahead of schedule, establishing technical credibility in the race to quantum advantage.

• Trading at 292 times trailing sales versus IBM's four times multiple shows investors pricing in a complete reimagining of computing, not incremental progress.

• Recent acquisitions totaling over $1 billion expand beyond quantum computing into networking, cryptography, and space applications, but integration risks compound with each deal.

• 10 stocks we like better than IonQ ›

IonQ (NYSE: IONQ) presents the ultimate high-risk, high-reward proposition in technology investing. The stock's 61% surge year-to-date reflects growing excitement about quantum computing's commercial potential, but here's the sobering reality: at 292 times trailing sales, IonQ trades at a valuation that makes the dot-com excesses of the late 1990s look restrained.

For context, IBM (NYSE: IBM), the leader in quantum computing, has just enabled the world's first quantum algorithmic trading with HSBC, trading at just four times sales. Either IonQ revolutionizes computing as we know it, or shareholders face catastrophic losses when reality collides with fantasy valuations.

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Image source: Getty Images.

That leaves investors with the question at the heart of this article: Is IonQ stock a once-in-a-lifetime opportunity, or a hype bubble waiting to burst? Let's break down the company's value proposition, risk factors, and current valuation to find out.

The quantum credibility test

IonQ's trapped-ion approach just cleared a major milestone: its Tempo system reached an algorithmic qubit score of #AQ 64 ahead of schedule, a benchmark that separates genuine progress from vaporware.

The company also reports world-record gate fidelities -- 99.999% for single-qubit and 99.97% for two-qubit operations -- performance metrics that matter in the race toward error-corrected quantum computing. Unlike rivals still battling stability and connectivity issues, IonQ's individually trapped ions offer longer coherence times and higher reliability.

Building on that technical base, IonQ has launched an aggressive expansion strategy. The $1.08 billion acquisition of Oxford Ionics enhances qubit control, while deals for ID Quantique (quantum cryptography), Lightsynq (photonic interconnects), and Capella Space (satellite-based quantum systems) extend its reach far beyond computing hardware.

The vision is not just faster machines but an entire quantum technology stack spanning computing, networking, and space applications. To support adoption today, IonQ makes its systems available through the cloud via Amazon Braket, Microsoft Azure Quantum, and Alphabet's Google Cloud. That combination of cutting-edge performance, bold expansion, and immediate accessibility is what fuels the bullish case for IonQ -- even if the payoff may still be years away.

The pure-play premium paradox

Quantum computing pure-plays trade at mind-boggling multiples. D-Wave Quantum stock commands 307 times its trailing sales. And Rigetti Computing tops them all at 981 times sales.

In this context, IonQ's 292 times multiple almost looks reasonable -- almost. These valuations assume quantum computing transforms from science experiment to widespread commercial reality within a matter of years, not decades. That's far from guaranteed and borders on unrealistic.

The IBM comparison exposes the speculation premium. IBM operates profitable quantum research alongside its traditional business and just demonstrated real-world quantum trading applications. Yet it trades at four times sales while IonQ burns cash, posts mounting losses, and depends entirely on technology that's unproven at scale.

The market's betting that pure-play exposure justifies paying 73 times more per dollar of sales than IBM. That's not investing -- it's gambling on technological revolution arriving ahead of schedule.

The binary outcome

IonQ stock offers almost no middle ground. If quantum computing reaches a commercial breakthrough and IonQ holds its technical lead, today's valuation could eventually look cheap. The company's milestones, acquisitions, and cloud partnerships give it a shot at capturing massive value if quantum rewires industries from drug discovery to artificial intelligence (AI).

But the downside is just as extreme. At 292 times sales, even flawless execution may not support the current price. Any delay in adoption or leapfrogging by rivals could trigger catastrophic losses. For risk-tolerant investors, IonQ provides the purest exposure to a potential quantum revolution. For everyone else, exposure through IBM at four times sales looks far more sensible than paying bubble-level multiples for a company that might never generate consistent profits.

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HSBC Holdings is an advertising partner of Motley Fool Money. George Budwell has positions in D-Wave Quantum, HSBC Holdings, IonQ, Microsoft, and Rigetti Computing. The Motley Fool has positions in and recommends Alphabet, Amazon, International Business Machines, and Microsoft. The Motley Fool recommends HSBC Holdings and recommends the following options: long January 2026 $395 calls on Microsoft and short January 2026 $405 calls on Microsoft. The Motley Fool has a disclosure policy.