Nvidia, IonQ, and Quantinuum Are Three Quantum Computing Stocks to Watch in the Second Half of 2026

Quantinuum secured a finalized US$100 million CHIPS R&D award from the U.S. Department of Commerce to support trapped ion quantum computer manufacturing in the United States. The company also announced new collaborations with Quanta Computer and Oracle tied to its trapped ion quantum hardware. As part of the Oracle tie-up, Quantinuum will place its Helios quantum computer inside Oracle data centers to support quantum cloud computing access. Quantinuum, a quantum computing hardware and software specialist in the IT industry, has a market cap of about US$12.7b. The company said the CHIPS R&D award and Oracle data center placement support its push to integrate quantum systems with AI and high performance computing through partners such as Oracle and HPE, though heavy reported losses and the risk of delays around its Sol and Apollo systems remain open issues.

IonQ announced a real-time quantum error correction decoder that runs complex workloads without slowing quantum computations. The company reported new deployments at the NVIDIA Accelerated Quantum Research Center, integrating its hardware into NVIDIA's quantum research stack, and disclosed a partnership with SDT in South Korea to support quantum computing access for regional enterprises and researchers. IonQ said the decoder handles benchmark circuits with up to 408 logical qubits and more than 31.5 million quantum operations with just 0.02% added time, running on a single off-the-shelf CPU while the quantum system keeps operating. IonQ, a US semiconductor player valued at about $17.4b, builds quantum computing systems for clients in the United States, Switzerland, and other regions. Investors will watch how many Superion 256 deployments move from contract to installed and active systems at sites like NVIDIA's research center, FIU and SDT's data center from 2027.

Bank of America initiated coverage of IonQ on September 28 with a Buy rating and a $60 price target, calling the company the largest public pure-play quantum company by revenue. The call lands as IonQ reported $80.1 million of Q2 2026 revenue, up 287% year-over-year, its strongest quarter on record and a fifth consecutive quarter of record results, with organic revenue up 132%. Management raised full-year 2026 IonQ revenue guidance to $280 million to $290 million and maintained its expectation for approximately 100% organic growth, while remaining performance obligations reached $485 million, up from $122 million a year earlier. Following its $1.8 billion acquisition of SkyWater, IonQ said it received its first fully integrated quantum processing units from the foundry and plans to begin commissioning 256-qubit systems in 2027, and it announced Superion 256 deployments at Florida International University and NVIDIA's Accelerated Quantum Research Center. BofA also pointed to IonQ's semiconductor-enabled approach to scaling qubit counts and its expansion across quantum computing, communications and sensing.

IonQ agreed to deploy its first on-premise Superion 256 quantum computer for Florida International University in Florida. The Superion 256 system will anchor a secure quantum research and education facility intended to serve FIU and partner institutions. The FIU hub is expected to support work in material science, artificial intelligence, health, logistics and other scientific applications using IonQ hardware. IonQ develops quantum computing systems for customers in the US, Switzerland, and other regions, so placing a Superion 256 machine at FIU gives the company a physical foothold inside an academic research pipeline that can stress test its hardware on real scientific workloads. The deployment is IonQ's first Superion 256 university installation.

IonQ said on September 23 that its Superion 256 will become the first on-premise quantum processor deployed at Nvidia's Accelerated Quantum Research Center, with the deployment planned for 2027. Nvidia will place IonQ's quantum processing unit alongside conventional accelerated computing hardware in a setting designed to develop large-scale hybrid systems, targeting applications including financial optimization, materials science and computational chemistry. IonQ introduced Superion 256 on September 8 and has begun accepting orders, with first customer deliveries expected in 2027 and commercially manufacturable fault-tolerant systems targeted for 2028. On September 22, IonQ reported a decoder breakthrough, demonstrating a real-time decoder running continuously on a single conventional CPU across benchmark circuits simulating up to 408 logical qubits and more than 31.5 million quantum operations, with as little as 0.02% additional execution time. The financial value of the Nvidia deployment has not been disclosed, and IonQ's 2026 revenue guidance of $450 million to $460 million includes SkyWater revenue from July 31 through year-end, so the increase cannot be attributed entirely to accelerating organic quantum-computing revenue.

IonQ announced it successfully developed and tested what it calls the industry's first end-to-end real-time quantum error correction decoder running on a single standard off-the-shelf central processing unit, sending its shares up 12% in morning trading. The news lifted the broader quantum computing trade, with QTUM, the largest ETF tracking the sector at about $5.7 billion in assets, up 41% year to date. IonQ was the top trending ticker on the Yahoo Finance platform following the announcement. The decoder addresses one of quantum computing's central obstacles, the errors that make current systems unsuitable for commercialization, and is seen as a significant step forward for the industry. The discussion also noted that IBM has made quantum a major part of its technological push and plans to spin off its quantum unit, while government investment in the field continues.