Quobly closes €115M Series A to industrialize FD-SOI silicon spin-qubit processors
On 2026-06-03 Grenoble-based Quobly announced the closing of a €115 million Series A to industrialize its silicon-based (FD-SOI) spin-qubit processors and deploy a first cloud-accessible commercial system under its Alloy product line by the end of 2026. Per Quobly's own release the round is led by Bpifrance (via the France 2030 Deep Tech 2030 fund), SEALSQ (Nasdaq: LAES), and STMicroelectronics, with participation from the European Innovation Council (EIC Fund), Blast, ALIAD (Air Liquide Venture Capital), and existing investor Innovacom; named existing shareholders include the CEA, CNRS, Quantonation, and Supernova Invest. SEALSQ's own release characterizes the round as €130 million and states the investment was made via its SEALQUANTUM.com Quantum Fund (grown to a $200M allocation), adding Isalt and BPI France to the named lead group and that SEALSQ CEO Carlos Moreira will join Quobly's board.
A €115M (~$125M) Series A for a credible silicon-spin-qubit hardware company sits at the top of the §8.2 score-7 band for a hardware-startup Series A ($50–150M), and concentrates sovereign-industrial European capital (Bpifrance/France 2030, STMicroelectronics, SEALSQ) behind a CMOS/FD-SOI manufacturing path that — if it reaches the stated end-2026 commercial deployment — is one of the few quantum approaches leveraging an existing semiconductor foundry supply chain.
The STMicroelectronics manufacturing partnership and SEALSQ board seat tie a public post-quantum-security vendor and a volume CMOS foundry to a spin-qubit roadmap, positioning silicon-spin as a European sovereign-stack play against the better-capitalized superconducting and neutral-atom incumbents; execution risk centers on whether FD-SOI qubit uniformity and control scale as cleanly as the semiconductor-manufacturing narrative implies.