Bitcoin miner MARA buys majority stake in AI data center firm Exaion

MARA acquires a 64% stake in French computing infrastructure operator Exaion, expanding into AI and cloud services as Bitcoin miners pivot toward data center revenue.

MARA Holdings has completed the purchase of a majority stake in French computing infrastructure operator Exaion, deepening its push into artificial intelligence (AI) and cloud services.

The deal, first agreed in August 2025 with EDF Pulse Ventures, gives MARA France a 64% stake in Exaion after required regulatory approvals were secured, the Bitcoin miner said in a Friday announcement. French energy giant EDF will remain a minority shareholder and continue as a customer of the business.

The investment also creates a broader alliance. NJJ Capital, the investment vehicle of telecom entrepreneur Xavier Niel, will acquire a 10% stake in MARA France as part of a partnership with MARA.

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