MARA Holdings Inc. – a US-based cryptocurrency mining firm – increased its Bitcoin (BTC) reserves by 373 BTC in September, pushing its total holdings to 52,850 from 52,477 BTC. Following today’s update, MARA remains the second-largest public company with BTC reserves, trailing Michael Saylor’s Strategy.

MARA Holdings Increases Bitcoin Reserves

According to an official announcement earlier today, MARA Holdings’ BTC reserves rose by 373 coins in September. The firm’s total BTC holdings are valued at approximately $6.4 billion, according to prevailing market prices.

Notably, MARA Holdings mined a total of 736 BTC in September, valued at approximately $88.6 million. In comparison, the company had mined 704 BTC in August 2025, representing a 4.4% increase over the previous month.

MARA

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