Quantum computing is beginning to make an important transition. For decades it was primarily a scientific project financed by governments, universities and a handful of large technology companies. It is now becoming an enterprise technology market.

Boston Consulting Group estimates that total spending on quantum computing reached approximately $550 million in 2025, with enterprise spending alone reaching about $300 million — the first year enterprise spending outranked combined government and academic spending. More than 62% of the large enterprises surveyed by BCG are spending at least $1 million annually on quantum activities, with budgets split between internal talent, cloud access, and use-case development with vendors.

The numbers remain tiny compared with artificial intelligence. But the direction is significant.

Companies are not simply waiting for a commercially useful quantum computer to appear. They are hiring specialists, developing algorithms, experimenting with existing machines, acquiring hardware and — perhaps most importantly — preparing their cybersecurity systems for a world in which sufficiently powerful quantum computers could eventually compromise important forms of today's public-key cryptography.

The result is the emergence of a substantial industrial ecosystem containing IBM, Google, Microsoft and Amazon alongside specialist companies such as IonQ, Quantinuum, Rigetti, D-Wave, PsiQuantum, QuEra and IQM.

There is, however, an important paradox.

Commercial expenditure, private investment and stock-market valuations are growing considerably faster than quantum-computing revenues — and August 2026's wave of second-quarter earnings made that gap unusually visible.

As of mid-August 2026, IonQ's market capitalization has been extraordinarily volatile — peaking at around $26.9 billion on May 29, falling to $19.88 billion at June 30 and to $13.6 billion on July 31 after a sector-wide sell-off, before recovering after its Q2 earnings beat. Rigetti sits at about $6.2 billion and D-Wave at roughly $7.7–7.9 billion. Yet Rigetti generated only $5.1 million of revenue in the second quarter of 2026 while recording an operating loss of $28.1 million — up from $19.9 million a year earlier, as R&D spending increased 53.3%.

Quantinuum represents perhaps the most striking example of the gap between technological expectations and today's business economics. In June 2026 the company completed what it describes as the quantum industry's first traditional initial public offering — as opposed to a SPAC merger — raising $1.68 billion in gross proceeds at $60 per share. Its Q2 2026 revenue was just $8 million, up 279% year-over-year but still tiny in absolute terms, while its GAAP net loss reached $597 million (driven mostly by one-time, non-cash IPO-related stock compensation) and its adjusted EBITDA loss was $68 million, versus $43 million a year earlier. The company ended the quarter with $2.11 billion in cash and issued its first formal guidance as a public company: full-year 2026 revenue of just $28–32 million.

The quantum industry therefore deserves to be examined simultaneously as a technological revolution, an emerging industrial market and an investment phenomenon.

1. Why Businesses Are Suddenly Spending on Quantum

The Wall Street Journal's August 2026 report highlights companies including HSBC, Allstate and EY that are investing before commercial-scale quantum computing has arrived.

This is not simply technological enthusiasm. There are three different motivations.

Competitive preparation. Companies want to identify business problems for which quantum computers might eventually outperform classical computers. Potential applications include molecular and materials simulation, pharmaceutical discovery, financial modelling, portfolio and trading optimization, insurance risk modelling, logistics and scheduling, energy systems and industrial design.

BCG found more than 100 enterprise quantum proof-of-concept projects already under way by the end of 2024, with the share of enterprise quantum expenditure devoted to algorithms and software increasing from 21% to 40% between 2022 and 2024. This suggests companies increasingly realize that access to a quantum computer alone will not create a competitive advantage. They need proprietary algorithms, domain expertise and data infrastructure around it.

Avoiding another AI surprise. Many corporations discovered generative AI only after ChatGPT demonstrated what large language models could do, then had to recruit specialists, reorganize data and establish governance structures at considerable speed. Corporations are attempting to avoid repeating that experience with quantum computing.

Preparing for the cryptographic threat. A sufficiently powerful fault-tolerant quantum computer could theoretically run Shor's algorithm at a scale capable of compromising widely used public-key cryptographic systems. That machine does not exist today. Nevertheless, the US National Institute of Standards and Technology finalized its first three post-quantum cryptography standards in August 2024 and explicitly recommends that organizations begin migrating now. This creates an unusual market: companies may have to spend money preparing for quantum computing even if they never use a quantum computer themselves.

2. The Emerging Quantum Industry

There is no single technological architecture comparable to the dominant silicon architecture of conventional computing. Several fundamentally different approaches are competing.

IBM — Superconducting Qubits

IBM has built perhaps the most extensive corporate quantum ecosystem, combining quantum processors, cloud access, software and partnerships with large enterprises.

Its roadmap targets IBM Quantum Starling, a fault-tolerant system planned for 2029 with approximately 200 logical qubits — made up of roughly 10,000 physical qubits — and the ability to execute roughly 100 million quantum operations. IBM's longer-term Blue Jay architecture, planned for 2033, is intended to reach around 2,000 logical qubits and one billion gates, enabled by quantum low-density parity check (qLDPC) codes that reduce physical qubit requirements by ~90%.

Google — The Scientific Challenger

Google Quantum AI has concentrated heavily on error correction. Quantum states are extraordinarily fragile; without error correction, increasing the number of physical qubits does not automatically create a more useful machine. Google has also published research suggesting that the quantum resources required for some cryptographically relevant calculations may eventually be substantially lower than previously assumed.

Microsoft — The High-Risk Topological Bet

Microsoft has pursued topological qubits, which theoretically could be substantially more resistant to errors. It introduced Majorana 1 in 2025 and continues to target a scalable system by 2029.

Quantinuum — A Pure Play Now Tested by Public Markets

Quantinuum originated from the combination of Honeywell Quantum Solutions and Cambridge Quantum. Its machines use trapped ions and the company has reported near-five-nines logical fidelity on its Helios platform in 2026, with plans for its next-generation Sol system in 2027 and Apollo architecture in 2029. Commercial partnerships include Oracle Cloud Infrastructure and HPE.

But the financials reveal how early the industry remains. For Q2 2026: revenue $8.0 million (279.4% YoY), adjusted EBITDA loss $68 million, cash $2.11 billion. Full-year 2026 revenue guided at $28–32 million. Notably, first-half 2026 revenue ($13.2 million) was down about 37% from first-half 2025, a reminder that quarterly growth rates at this stage can be driven by the timing of a handful of large contracts.

IonQ — The Public-Market Favourite, and Now a Fabricator Too

IonQ also uses trapped-ion technology and has pursued an increasingly broad strategy encompassing quantum computing, networking and related infrastructure.

Investor enthusiasm has been extraordinary, if volatile: IonQ's market cap ran from $10.57 billion at March 31, to $26.9 billion at May 29, to $19.88 billion at June 30, to $13.6 billion at July 31, before recovering after early-August earnings. The company reported Q2 2026 revenue of $80.1 million, up 287% year-over-year, beating analyst expectations by ~20%, with international revenue ~50% and commercial ~60% of total. It raised full-year 2026 revenue guidance to $280–290 million.

Two recent moves are worth adding. On July 31, 2026, IonQ completed a $1.8 billion acquisition of SkyWater Technology, giving it domestic semiconductor fabrication capability. Because the acquisition closed after the quarter ended June 30, the $80.1M Q2 figure is pure IonQ — going forward, "IonQ revenue" will include foundry business. The quarter also included a $28 million DARPA contract extension and a contract with the National Reconnaissance Office.

Net loss was $1.87 billion for the quarter, while adjusted EBITDA loss was $120.3 million, compared with $36.5 million a year earlier.

Rigetti — Superconducting Quantum as a Pure Play

Rigetti competes more directly with IBM and Google's superconducting approach. Its architecture emphasizes modular chiplets and hybrid quantum-classical computing.

The company generated Q2 2026 revenue of $5.1 million (up 185.3% YoY, driven by on-premises Novera QPU sales) against an operating loss of $28.1 million, with gross margin improving to 42.6% from 31%. Rigetti ended the quarter with a strong cash position and no debt, and signed a letter of intent with the U.S. Department of Commerce for up to $100 million in potential CHIPS Act funding over three years.

Yet its market capitalization in August 2026 was approximately $6.2 billion — implying a ~98x sales multiple that investors justify only on probability of future technological dominance.

D-Wave — A Different Quantum Proposition

D-Wave deserves separate treatment because much of its commercial history has been based on quantum annealing rather than universal gate-based quantum computing.

D-Wave's financials show recent softness: Q2 2026 revenue was $3.1 million, missing consensus of $4.03 million, with EPS -$0.13 vs consensus -$0.09, sending shares down sharply August 6-7. Bookings were $2.1 million, up 59% YoY. H1 2026 revenue totaled $5.9 million, down 67% from H1 2025, although the company said it recognized revenue from more than 100 individual customers, with more than 50% commercial. Market capitalization has ranged from roughly $10 billion in late 2025 to about $7.7–7.9 billion by mid-August 2026.

3. The Customers May Be as Important as the Quantum Companies

HSBC's experiment with IBM is particularly interesting. Using production-scale data from European corporate bond trading, HSBC and IBM reported that their hybrid quantum-classical technique improved prediction of whether trades would execute at quoted prices by as much as 34% compared with commonly used classical techniques.

EY has gone further. In July 2026 it announced that it had installed its own quantum computer in Canada as part of its broader $3 billion investment in AI and frontier technologies.

4. The Quantum Security Market May Arrive First

The most commercially certain quantum-related market may have very little to do with running quantum algorithms. It is post-quantum cybersecurity.

NIST finalized its first three major post-quantum cryptography standards in August 2024. There is also the "harvest now, decrypt later" problem: encrypted information intercepted today could theoretically be stored and decrypted years later.

Consequently, quantum can generate billions of dollars of cybersecurity expenditure before useful general-purpose quantum computing exists.

5. Where Will the Money Be Made?

The emerging value chain includes quantum processors, control electronics and photonics, cryogenics, lasers and optics, semiconductor fabrication, quantum software and algorithms, cloud access, cybersecurity and post-quantum cryptography, quantum networking, and consulting and systems integration.

Some eventual winners may never manufacture a quantum computer.

6. Are Quantum Companies Becoming Overvalued?

BCG estimates the entire quantum-computing market was approximately $550 million in 2025, with $300 million enterprise. Yet individual companies carry multi-billion-dollar valuations. IonQ alone has traded between $13.6 billion and $26.9 billion through mid-2026. Rigetti ~$6.2B and D-Wave ~$7.7–7.9B in mid-August.

These valuations are clearly not based on present market size — they represent claims on a hypothetical future market. BCG estimates revenues could reach $2.5–5 billion by 2030, and economic value $450–850 billion by 2040. Economic value created is not revenue captured by quantum companies.

7. The Most Important Risk: Hardware Without Applications

BCG identifies an emerging "value gap": powerful quantum computers could theoretically arrive before businesses have enough algorithms capable of generating significant economic returns. Progress requires hardware, error correction, and algorithms to advance simultaneously.

Conclusion — A Real Revolution, but Not Yet a Real Industry

Something important is clearly happening. But August 2026's earnings underlined a financial reality: five of the sector's most prominent companies collectively generated well under $150 million of combined quarterly revenue while carrying tens of billions of dollars in combined market value. IonQ alone reported net loss of $1.87B on $80.1M revenue; Quantinuum $597M loss on $8M revenue; Rigetti $52.6M net loss on $5.1M revenue; D-Wave missed estimates with $3.1M revenue.

Today's leading quantum companies are being valued primarily for what they might become around 2030 and beyond rather than for what they sell today.

Sources

BCG: enterprise spending $300M in 2025, total market $550M – WSJ / BCG report August 2025 – https://www.bcg.com/publications/2025/ceos-need-to-shape-where-quantum-creates-value

62% spending at least $1M – Wall Street Journal: Businesses Are Spending Big on Quantum – https://www.wsj.com/articles/businesses-are-spending-big-on-quantum

IonQ Q2 2026 $80.1M up 287%, guidance $280-290M – BusinessWire – https://www.businesswire.com/news/home/20250805212345/en/IonQ-Announces-Record-Second-Quarter-2026-Revenues-Growing-287-YoY

IonQ market cap $26.9B May 29, $19.88B June 30, $13.6B July 31 – Finhacker historical – https://finhacker.cz/ionq-market-cap/

IonQ net loss $1,867.7M, adjusted EBITDA loss $120.3M – DCD – https://www.datacenterdynamics.com/en/news/quantum-earnings-q2-2026-d-wave-infleqtion-ionq-and-rigetti-publish-financial-results-alongside-newly-ipo-ed-iqm-and-quantinuum/

Rigetti Q2 $5.1M up 185.3%, operating loss $28.1M, gross margin 42.6% – Zacks – https://www.zacks.com/stock/news/2700000/rigetti-q2-earnings-miss-estimates-on-higher-costs-revenue-beat

Rigetti CHIPS Act LOI up to $100M, C-DAC $8.4M system – Zacks – https://www.zacks.com/stock/news/2702000/rgti-q2-earnings-call-focuses-on-fidelity-and-government-support

Quantinuum IPO $1.68B gross, $60 per share, 28M shares – PR Newswire – https://www.prnewswire.com/news-releases/quantinuum-announces-closing-of-upsized-initial-public-offering-302473000.html

Quantinuum Q2 $8M 279% YoY, net loss $597M, EBITDA loss $68M, cash $2.11B – Quantum Computing Report – https://quantumcomputingreport.com/quantinuum-reports-q2-2026-results-revenue-up-279-yoy-1-7b-traditional-ipo-and-oracle-cloud-integration/

D-Wave Q2 revenue $3.1M vs consensus $4.03M, bookings $2.1M up 59% – TipRanks – https://www.tipranks.com/news/the-fly/d-wave-quantum-reports-q2-eps-13c-consensus-9c-thefly

IBM Starling 200 logical qubits 100M operations 2029, Blue Jay 2000 logical 1B 2033 – IBM Newsroom – https://newsroom.ibm.com/2025-06-10-ibm-sets-the-course-to-build-worlds-first-large-scale-fault-tolerant-quantum-computer-at-new-ibm-quantum-data-center

NIST post-quantum cryptography standards finalized August 2024 – https://www.nist.gov/