MARA Holdings, a U.S.-based mining company, has successfully acquired a 64% stake in the French data center operator Exaion, marking a significant expansion into AI infrastructure.
It’s time. MARA’s transaction to acquire a 64% stake in EDF subsidiary Exaion has been completed, with Xavier Niel and Fred Thiel joining Exaion’s Board as we scale secure HPC and AI infrastructure from France.
— MARA (@MARA) February 20, 2026
While the financial details of the acquisition remain undisclosed, reports from August 2025 indicated that MARA proposed a $168 million cash offer to the investment arm of EDF, Exaion’s former owner, which retains a minority stake in the company.
As part of the acquisition, MARA has entered into a strategic partnership with NJJ Capital, owned by French billionaire Xavier Niel, who will acquire a 10% stake in MARA's financial division. The new board of Exaion will consist of members from MARA, EDF Pulse Ventures, and NJJ, alongside Exaion's CEO and Fred Thiel, the CEO of MARA.




