Marathon Digital Holdings (MARA) has boosted its total Bitcoin holdings to 52,850 BTC, by adding 373 BTC in September valued at roughly $6.4 billion. The update, disclosed in the firm’s monthly production report, asserts MARA’s position as the largest public Bitcoin miner by treasury size.
The company mined 736 BTC ($88.6 million) during the month, representing a 4.4% increase from August and accounting for 5.2% of total block rewards, including transaction fees. MARA secured 218 blocks, a 5% increase over the prior month, even as the global hashrate climbed 9% to average 1,031 EH/s. Its energized hashrate rose slightly to 60.4 EH/s, with full deployment at its Texas wind-powered site.
Despite Bitcoin’s late September correction, MARA’s operations benefited from BTC closing the month at $120,373, up 5.4% on the month and briefly passing $120,000 for the first time since August’s all-time high near $125,000.
The company’s position is as the second-largest public holder of Bitcoin overall, trailing only Michael Saylor’s Strategy with 640,031 BTC ($77 billion), according to BitcoinTreasuries.
From Bitcoin blocks to AI infrastructure
In August, the company struck a $168 million deal to acquire a 64% stake in Exaion, a French subsidiary of Électricité de France (EDF) specializing in artificial intelligence (AI) and performance computing (HPC). The deal includes an option to raise its stake to 75% by 2027 with an additional $127 million investment, contingent on performance targets.
Exaion already collaborates with firms like Nvidia and Deloitte to build energy-efficient HPC data centers and AI cloud services. MARA’s majority stake rely on their interest to expand into AI infrastructure, signaling a broader strategy to align Bitcoin mining with scalable computing markets.
By combining a $6 billion Bitcoin treasury with a foothold in the AI and HPC sector, Marathon is betting that miners of the future won’t just secure blockchains, they’ll also supply the computational backbone for emerging industries.
This diversification, paired with governance challenges seen across the sector, signals that treasury management in mining firms is moving closer to the model of large-scale utilities and cloud providers.
Also Read: Publicly Traded MARA Raised $950 Million to Buy More Bitcoin
