--- title: "D-Wave, Rigetti and Other Quantum Stocks Are Trending Overnight: Here's Why" type: "News" locale: "en" url: "https://longbridge.com/en/news/299852769.md" description: "Quantum computing stocks rallied in after-hours trading Tuesday. IonQ surged 12.17% following announcements of its first real-time quantum error correction decoder and a hardware agreement with SDT, Inc. D-Wave gained 5.41% after appointing Bernard Gavgani to its board, while Rigetti rose 5.63% due to a $100 million CHIPS Act funding agreement. Xanadu recovered slightly despite a sharp regular-session drop linked to IPO lock-up expiration. Sector optimism was bolstered by bullish analyst notes ahead of the Quantum World Congress." datetime: "2026-09-23T05:54:55.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/299852769.md) - [en](https://longbridge.com/en/news/299852769.md) - [zh-HK](https://longbridge.com/zh-HK/news/299852769.md) generator: "portal-rs" --- # D-Wave, Rigetti and Other Quantum Stocks Are Trending Overnight: Here's Why Quantum computing stocks moved higher in after-hours trading Tuesday. ## **IonQ Leads** **IonQ Inc.** (NYSE:IONQ) surged 12.17% after hours to $45.70, the sector’s biggest mover. In the regular session the stock of the Maryland-based company edged 0.57% higher to $40.74, according to Benzinga Pro data. The company announced the industry’s first end-to-end real-time quantum error correction decoder that runs on a single, standard off-the-shelf CPU. IonQ said the decoder was validated across benchmark circuits simulating 408 logical qubits and more than 31.5 million quantum operations, adding just 0.02% processing overhead. **Nicolas Delfosse**, IonQ’s quantum research lead and paper co-author, said: “Successfully validating real-time decoding across hundreds of logical qubits and over millions of logical operations is an important milestone.” The announcement came one day after IonQ announced a multiyear hardware agreement with **South Korea’s SDT, Inc.** Under the deal, IonQ will supply a Superion 256 quantum computer and silicon vacancy quantum memory modules. ## D-Wave, Rigetti Ride the Momentum **D-Wave Quantum Inc.** (NASDAQ:QBTS) gained 5.41% after hours to $18.51. In regular trading, the stock of the Palo Alto-based company dipped 0.79% to $17.56, according to Benzinga Pro data. The company this week appointed **Bernard Gavgani**, former Group Chief Information Officer of **BNP Paribas**, to its board of directors and cybersecurity committee. D-Wave said Gavgani’s experience in cybersecurity, risk management and large-scale technology transformation would support the company’s long-term strategy. **Rigetti Computing Inc.** (NASDAQ:RGTI) rose 5.63% after hours to $17.45. In regular session, the stock of the Berkeley-based company slipped 0.06% to $16.52, according to Benzinga Pro data. Rigetti recently signed a definitive $100 million funding agreement with the U.S. Department of Commerce under the CHIPS Act to accelerate superconducting quantum computing R&D, with the department receiving a minority equity stake in the company as a condition of the award. ## **Xanadu Recovers From a Rough Session** **Xanadu Quantum Technologies Ltd.** (NASDAQ:XNDU) added 2.58% after hours to $5.93. In regular session, the stock of the Toronto-based company tumbled 21.57% to $5.78, according to Benzinga Pro data. The company announced on Tuesday **Tara Deakin** as Chief People Officer.Meanwhile, the sharp decline came as Xanadu’s IPO lock-up period expired, potentially allowing previously restricted shareholders to sell additional shares into the market. ## **Analyst Sentiment in Focus** Sector optimism was also reportedly bolstered by bullish notes on IonQ, D-Wave and Rigetti ahead of the Sep. 23-25 Quantum World Congress, where the Department of Energy, the White House Office of Science and Technology Policy, and executives from **Microsoft Corp.** (NASDAQ:MSFT) and **IBM Corp.** (NYSE:IBM) are expected to address the shift from quantum research toward commercialization. ***Disclaimer:*** *This content was partially produced with the help of AI tools and was reviewed and published by Benzinga editors.* *Photo Courtesy: Pete Hansen on Shutterstock.com* ### Related Stocks - [RGTI.US](https://longbridge.com/en/quote/RGTI.US.md) - [IONQ.US](https://longbridge.com/en/quote/IONQ.US.md) - [XNDU.US](https://longbridge.com/en/quote/XNDU.US.md) - [QBTS.US](https://longbridge.com/en/quote/QBTS.US.md) - [RGTZ.US](https://longbridge.com/en/quote/RGTZ.US.md) - [IONL.US](https://longbridge.com/en/quote/IONL.US.md) - [QBTX.US](https://longbridge.com/en/quote/QBTX.US.md) - [RGTX.US](https://longbridge.com/en/quote/RGTX.US.md) - [IONZ.US](https://longbridge.com/en/quote/IONZ.US.md) - [RGTU.US](https://longbridge.com/en/quote/RGTU.US.md) - [QBTZ.US](https://longbridge.com/en/quote/QBTZ.US.md) - [IONX.US](https://longbridge.com/en/quote/IONX.US.md) - [IOYY.US](https://longbridge.com/en/quote/IOYY.US.md) - [XNDX.US](https://longbridge.com/en/quote/XNDX.US.md) - [MSFT.US](https://longbridge.com/en/quote/MSFT.US.md) - [IBM.US](https://longbridge.com/en/quote/IBM.US.md) - [BNPQY.US](https://longbridge.com/en/quote/BNPQY.US.md) - [IONQ+.US](https://longbridge.com/en/quote/IONQ+.US.md) - [QBTS+.US](https://longbridge.com/en/quote/QBTS+.US.md) - [RGTIW.US](https://longbridge.com/en/quote/RGTIW.US.md) ## Related News & Research - [D-Wave Quantum Adds Veteran Tech Leader to Board](https://longbridge.com/en/news/299637348.md) - [IonQ partners with Nvidia to deploy Superion 256 quantum system at accelerated quantum research center](https://longbridge.com/en/news/299893242.md) - [D-Wave (QBTS) to Showcase Dual Quantum Strategy as Wall Street Sees 116% Upside](https://longbridge.com/en/news/299182391.md) - [Breaking Down the Impact of the CHIPS Funding Deal for Quantum Firms](https://longbridge.com/en/news/299072960.md) - [Quantum Stocks Rally as RGTI, QBTS Secure Up to $200M in U.S. Funding](https://longbridge.com/en/news/298320736.md) --- > **Disclaimer: This article is for reference only and does not constitute any investment advice.**