IonQ vs. D-Wave Quantum: Which Quantum Computing Stock Is a Better Buy in 2026?

IonQ and D-Wave Quantum are competing quantum computing companies with different technological approaches. IonQ uses trapped-ion technology and generated $130M in FY2025 revenue with 201.9% YoY growth, while D-Wave specializes in quantum annealing with $24.6M revenue and 178.5% growth. Both are unprofitable with significant operating losses, but IonQ is recommended as the better buy due to stronger revenue growth, the SkyWater Technology acquisition providing end-to-end chip capabilities, and a more comprehensive quantum solution portfolio.

08/02/2026, 9:34 AM • The Motley Fool

Quantum Computing Stocks Are Falling. Should You Buy IonQ or D-Wave, or Just Stick With Nvidia?

Quantum computing stocks IonQ and D-Wave have experienced significant declines recently, with IonQ down 37% and D-Wave down 28% over the past month. While both companies rely heavily on federal government contracts and funding, IonQ shows stronger revenue growth ($64.7M in Q1 2026, up 755% YoY) and cash reserves ($3.1B), whereas D-Wave faces challenges with declining revenue ($2.9M in Q1 2026, down 81% YoY). Nvidia, which provides foundational GPU infrastructure for quantum computing through its NVQLink platform, is positioned as the lower-risk play that benefits regardless of which quantum company succeeds.

07/23/2026, 12:30 PM • The Motley Fool

Is IonQ Stock a No-Brainer Buy? Here's What History Says.

IonQ's trapped-ion quantum computing technology offers competitive advantages, but the company faces significant challenges as a cash-burning startup competing against tech giants and other quantum computing firms. With $272 million in operating losses, dependence on outside capital, and 15% share dilution in the past year, history suggests IonQ should be treated as a speculative investment rather than a no-brainer buy.

07/23/2026, 5:26 AM • The Motley Fool

IonQ vs. Quantinuum vs. Infleqtion vs. Rigetti vs. D-Wave: Which Is the Best Quantum Computing Stock to Bet On?

The article compares five quantum computing companies using different technological approaches. IonQ and Quantinuum lead in accuracy with trapped-ion technology (99.99% and 99.92% fidelity respectively). Rigetti uses faster superconducting qubits but lags in accuracy. Infleqtion pursues neutral-atom technology with moderate speed and accuracy. D-Wave focuses on quantum annealing for optimization problems and is developing superconducting qubits. The author recommends IonQ as the best single investment due to its accuracy lead and vertically integrated ecosystem approach.

07/22/2026, 1:15 PM • The Motley Fool

Quantum Computing Stocks IonQ, Rigetti, and D-Wave Are Sending Shockwaves Through Wall Street With This $988 Million Warning

Despite massive gains in quantum computing stocks IonQ, Rigetti, and D-Wave since mid-2024, insiders at these companies have collectively sold over $988 million in stock over the past five years with minimal insider buying. The article warns that extreme valuations (P/S ratios of 60-459) and lack of insider confidence suggest caution, as broad-based adoption remains years away and historical tech bubbles typically precede major corrections.

07/22/2026, 5:06 AM • The Motley Fool

Is D-Wave Quantum a Millionaire-Maker Stock?

D-Wave Quantum, despite operating in the promising quantum computing sector, is unlikely to be a millionaire-maker stock. With a $6.2 billion market cap, only $12.4 million in annual revenue, and significant losses ($368 million net loss), the company faces intense competition from tech giants and a crowded market. The stock's expensive valuation and path to profitability make it a risky investment.

07/21/2026, 6:02 AM • The Motley Fool

D-Wave Quantum's CEO Sold Over 50,000 Company Shares. Here's What That Means for Investors.

D-Wave Quantum CEO Alan Baratz sold 52,320 shares (~$976k) on July 14, 2026, through a non-discretionary sale-to-cover transaction to satisfy tax withholding obligations from RSU vesting. The CEO retains ~3.2 million shares post-transaction, indicating continued alignment with the company. Despite the sale, D-Wave's stock has appreciated 20% over the past year, driven by $100M federal funding, the Quantum Circuits acquisition, and record quarterly bookings of $33.4M. However, the company remains unprofitable with a $54.7M operational loss in Q1.

07/19/2026, 11:23 AM • The Motley Fool

IQM’s Nasdaq Debut Could Change the Quantum Race for D-Wave

IQM Quantum Computers, Europe's first publicly traded quantum computing company, has listed on Nasdaq, intensifying competition in the quantum computing sector. While IQM poses competitive threats to D-Wave through its strong engineering reputation and European market presence, the broader competition may ultimately benefit the industry by driving innovation and helping investors differentiate between quantum firms. D-Wave faces pressure to distinguish itself despite strong commercial momentum with record Q1 bookings of $33.4 million.

07/10/2026, 1:11 PM • Investing

This Quantum Computing Stock Is Poised for a Sharp Selloff in the Second Half of 2026

Rigetti Computing faces significant downside risk despite quantum computing hype. The company's $5.6B market cap is disconnected from its $7M shrinking revenue, resulting in an extremely stretched valuation. Ongoing share dilution through its ATM program and government funding equity stakes, combined with falling sales, could trigger a sharp pullback if investor enthusiasm cools.

07/09/2026, 9:05 PM • The Motley Fool

This Explosive Quantum Stock Just Got a Massive $100 Million Catalyst

D-Wave Quantum received a major catalyst from proposed U.S. government funding of $100 million tied to quantum computing adoption. While the bull case is significant if quantum adoption accelerates, the stock's valuation already prices in a future that may take years to materialize, presenting both opportunity and risk.

07/06/2026, 8:30 AM • The Motley Fool

Is D-Wave Quantum a Buy?

D-Wave Quantum, a quantum computing company, has begun landing commercial deals including a $20 million system sale and a $10 million cloud-access agreement. However, the analyst recommends holding off on buying the stock due to its extremely high valuation of 200x this year's estimated revenue ($42.5M) and 100x next year's estimate, despite the company's early momentum. With significant competitive threats from other quantum companies and tech giants, the stock carries more downside risk than upside potential at current levels.

07/04/2026, 8:29 AM • The Motley Fool

Quantum Stocks Face a 2028 Cash Test. Here's What Investors Should Know.

Quantum computing stocks including IonQ, IBM, D-Wave, Rigetti, and Quantum Computing Inc. are competing in the quantum computing race, but success may depend less on technology and more on cash runway and dilution risk. The critical test for these companies will be reaching 2028 with sufficient financial resources.

07/01/2026, 10:30 AM • The Motley Fool

Is D-Wave's Dip an Opportunity or Red Flag?

D-Wave Quantum (QBTS) has declined nearly 20% over the past month following a shift in its product roadmap to include gate-model quantum computing alongside its original annealing focus. While analysts remain bullish with an average price target of $37 (54% upside), bears question the long-term commercial viability of quantum computing and cite the company's increasing burn rate and widening losses. The stock presents a speculative opportunity for long-term investors with high risk tolerance, supported by up to $100 million in U.S. government funding.

07/01/2026, 3:19 AM • The Motley Fool

The Quantum Bubble Is Real Enough to Take Seriously

The quantum computing industry faces potential valuation concerns despite real technological progress. Pure-play quantum companies like D-Wave and Rigetti show impressive stock gains but trade at extremely high price-to-sales multiples (700x+ for D-Wave) with minimal revenues. While some companies like IonQ demonstrate strong commercial traction and substantial cash reserves, the sector faces profitability challenges, high R&D costs, and increasing competition from tech giants like Intel and IBM entering the quantum space.

06/30/2026, 1:13 PM • Investing

Quantum Computing Stocks IonQ, Rigetti Computing, and D-Wave Quantum Sent Shockwaves Through Wall Street With This $857 Million Warning

Insiders at quantum computing companies IonQ, Rigetti Computing, and D-Wave Quantum have collectively sold nearly $857 million in stock over the past two years, while insider buying has been virtually nonexistent. This insider selling activity raises concerns about valuations and the early-stage adoption challenges of quantum computing technology, despite the sector's significant growth potential.

06/25/2026, 5:06 AM • The Motley Fool