SEALSQ Corp (NASDAQ:LAES) has joined STMicroelectronics, Isalt and BPI France as a lead investor in a €130 million Series A financing round for Quobly, a developer of silicon-based quantum processors.
The investment, made through SEALSQ's Quantum Fund, supports Quobly's industrialization of its FD-SOI quantum processors and the deployment of its first commercial systems. As part of the deal, SEALSQ CEO Carlos Moreira will join Quobly's board of directors.
The round builds on a technical partnership between SEALSQ and Quobly established in November 2025, under which the two companies are jointly developing secure-by-design quantum computing systems that integrate post-quantum cryptography and hardware Root-of-Trust into silicon-based quantum architectures.
"This investment builds on the SEALSQ-Quobly technical partnership established in 2025 and reflects a shared commitment to advancing the next generation of secure quantum technologies," Moreira said. "By integrating Quobly's pioneering silicon quantum processors with our post-quantum cryptography and hardware security technologies, we are accelerating the development of truly secure quantum computers."
The SEALSQ Quantum Fund, launched in February 2025 with a $20 million initial allocation, has grown to $200 million. Outside of the Quobly financing, approximately $30 million has been deployed across investments in IC'Alps, ColibriTD, EeroQ, WISeSat, Quantix Edge Security and the WeCan Group.
The collaboration is intended to yield co-development of quantum-resistant secure microcontrollers, enhanced device authentication and key management for quantum systems, and sovereign quantum computing platforms targeting defense, finance, energy and critical infrastructure.
Quobly CEO Maud Vinet said the investment supports the company's transition toward industrial deployment. "As we bring our first silicon-based quantum computers to market, trusted semiconductor technologies and secure computing environments will become increasingly important for real-world adoption," she said.