Overview
- IonQ and D‑Wave shares climbed in April, with IonQ up more than 50% and D‑Wave up about 25%.
- Both stocks fell more than 65% from October 2025 to March 2026 and remain over 45% below their October highs.
- IonQ builds gate‑model machines judged by two‑qubit gate fidelity, and the company cites a 99.99% milestone reached in October 2025.
- Analysts estimate gate‑model systems will likely need about 99.99999% fidelity for mainstream use, which points to a sizable technical gap.
- D‑Wave sells quantum annealers for optimization tasks that can return strong near‑optimal picks fast and at lower cost, for example choosing from more than 60 quadrillion route options across 20 stops.