Marathon [MARA] Holdings has signaled a shift in its long-standing Bitcoin Treasury strategy.
It disclosed in its 2025 annual report that it began selling portions of its mined bitcoin in the second half of the year and expects to continue “opportunistically monetizing bitcoin” to support operations and capital needs.
The language marks a departure from MARA’s previous stance of holding mined bitcoin as a long-term balance sheet asset.
While the company did not outline a set sales program, it made clear that bitcoin is now being treated as a liquidity lever rather than an untouchable reserve.
From long-term holder to active treasury manager
In his Form 10-K filingMARA contrasted its historical strategy with its recent actions. It notes that it previously owned bitcoin as a long-term investment began selling bitcoin to fund operations in the second half of 2025.
The filing adds that the company expects to continue monetizing bitcoin “opportunistically” to increase financial flexibility.
This shift does not indicate an aggressive liquidation strategy, but instead reflects a more active treasury approach. Through this approach, Bitcoin will be used to fund operating costs, capital expenditures and strategic initiatives when necessary.
In addition to direct sales, MARA has also used Bitcoin in other balance sheet strategies, including lending and pledging Bitcoin as collateral for credit facilities.
The second largest public Bitcoin holder
The policy change carries weight because of MARA’s size. According to data from the state treasury, 151 public companies collective retention 1,144,556 BTC. This represents approx 5.45% of the total bitcoin supply and is roughly valued $75.9 billion.
MARA is in second place among public companies, with 52,850 BTC worth approximately $3.5 billionbehind only Strategy in possession of business bitcoins.
Any adjustment to MARA’s treasury philosophy will therefore impact one of the largest corporate bitcoin balances on the market.
MARA’s liquidity management during expansion
The 10-K also outlines capital-intensive growth initiatives, particularly in the areas of artificial intelligence and high-performance computing infrastructure.
MARA has concluded strategic agreements for this purpose expand AI and computing capabilitiesa step that requires significant investment.
At the same time, the filing details ongoing financing arrangements, including convertible notes and credit facilities. While these are standard tools for a capital-intensive business, they reinforce the importance of maintaining liquidity flexibility.
In that context, Bitcoin functions not only as a store of value, but also as a financial instrument that can be mobilized to support expansion and manage balance sheet risk.
The broader background also shows that the total value of a public company Bitcoin holdings are down 15.1%. This underlines the volatility inherent in holding large digital asset reserves.
Rather than signaling a retreat from bitcoin, MARA’s updated language suggests a maturation of the strategy. Bitcoin remains central to the company’s identity, but is now integrated into a more dynamic capital allocation framework.
Final summary
- MARA’s 2025 filing signals a clear shift from pure long-term ownership to actively generating bitcoin to support operations and growth.
- As the second-largest public bitcoin holder, MARA’s evolving treasury strategy has broader implications for corporate bitcoin management.