Rigetti (RGTI), Quantum Stocks Climb ‘Double-Digits’ on Nvidia Support

Nvidia’s unveiling of its “Ising” Calibration and Decoding AI workflow spurred renewed investor interest in quantum-computing names, sending Rigetti shares up for a fourth straight day (jumping 13.28% to $19.11). The Nvidia announcement was viewed as validating the sector’s commercial relevance and boosting appetite for suppliers and service providers. Rigetti also announced general availability of its new Cepheus-1-108Q — a 108‑qubit, modular system on Rigetti QCS and Amazon Braket — touting ~99.1% median two‑qubit fidelity, ~99.9% median single‑gate fidelity and ~60 ns gate speed. The developments drove short‑term bullish sentiment for quantum stocks and may support further re-rating if performance and customer adoption progress through 2026.