Quantum Computing Stocks: A Comparative Analysis of IonQ and Rigetti for 2026

The quantum computing sector has experienced significant volatility throughout 2025, with stocks like IonQ (NYSE: IONQ) and Rigetti Computing (NASDAQ: RGTI) facing substantial declines from their October peaks—IonQ down approximately 43% and Rigetti down about 60%. Despite an initial recovery earlier in the year, the market's risk appetite has waned, impacting the performance of these quantum computing companies.

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IonQ and Rigetti represent two divergent methodologies in quantum computing. IonQ employs trapped ion qubits, which utilize single charged atoms held in an electromagnetic field, achieving a notable 99.99% two-qubit gate fidelity. This level of accuracy surpasses that of competitors using superconducting qubits, which have not exceeded 99.9%. However, IonQ's trapped ion technology is slower in processing speed compared to the superconducting approach favored by many industry leaders, including Microsoft and Alphabet.

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Rigetti, on the other hand, focuses on superconducting qubits but has struggled to match IonQ's accuracy. The competition is critical, as the market for quantum computing remains limited, primarily consisting of research contracts. Winning these contracts is essential for the long-term viability of both companies.

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A significant development in the sector is the Quantum Benchmarking Initiative led by the Defense Advanced Research Projects Agency (DARPA). This initiative aims to evaluate which quantum technologies can achieve commercial viability and utility-scale operations by 2033. IonQ has been selected for Stage B of this initiative, while Rigetti was not, raising concerns about Rigetti's competitive position.

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The future performance of IonQ and Rigetti stocks is closely tied to market sentiment regarding risk. As of December 2025, the market appears risk-averse, which could hinder the recovery of these stocks. Analysts suggest that while both companies have potential, their success is contingent upon external market conditions rather than solely on their technological advancements. The timeline for commercially viable quantum computing is projected to extend until at least 2030, making investments in this sector highly speculative.

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Critics argue that the long wait for practical applications of quantum computing may deter investors. The reliance on market sentiment and the competitive landscape, particularly against well-funded rivals like Microsoft and Alphabet, raises questions about the sustainability of IonQ and Rigetti's business models.

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In summary, while IonQ currently holds a technological edge in accuracy, Rigetti's slower progress and lack of DARPA selection pose challenges. Both companies face an uncertain future heavily influenced by market dynamics and investor risk appetite. As the quantum computing landscape evolves, investors may need to consider alternative strategies, such as exchange-traded funds (ETFs), to mitigate risks associated with these high-volatility stocks.

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• “If the market is feeling risk-averse (like it is in December), these stocks may struggle.” — Analyst

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• “With both IonQ and Rigetti going up against some stiff and well-funded competition (like Microsoft and Alphabet), and reliant on the market's mood for their share price performance, the chances of either company being a successful investment next year are low.” — Analyst

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