MARA Expands BTC Sales Flexibility After Mixed 2025 Bitcoin Treasury Results
Quick Takeaways:
- Lending brought in $32.1M of interest in 2025 but exited the trading mandate after losses.
- Bitcoin-backed debt ended 2025 at $350M, increasing margin-call sensitivity as BTC fell.
- Will broaden BTC sales flexibility in 2026; Acquired 42MW Nebraska site for $25M in January
MARA’s effort to turn its Bitcoin stockpile into a yield engine delivered mixed results in 2025, with lending income outweighted by trading losses and growing balance-sheet sensitivity to price swings.
The largest public Bitcoin miner by BTC holdings disclosed in its annual report filed Monday that while it generated $32.1 million of interest income from lending Bitcoin last year, its broader “digital asset management” strategy resulted in mark-to-market losses as prices declined and a structured trading mandate underperformed.
The results offer one of the clearest looks yet at how an active bitcoin treasury strategy fares in a volatile market.
Lending Generated Cash — but Not Net Gains
MARA deployed 9,377 Bitcoin into fixed-term lending arrangements with third-party counterparties during 2025. The program was its most productive active segment, generating $32.1 million in interest income.
However, after factoring in the decline in Bitcoin’s market value, the lending book recorded a total loss of $86.3 million for the year.
The company also established a separately managed account with 2,000 BTC at Two Prime in the second quarter to pursue structured trading and hedging strategies. That effort incurred a net trading loss of $22.1 million. MARA terminated the mandate in December and withdrew the remaining 1,777 Bitcoin. Including fair-value adjustments, the trading segment recorded a total loss of $69.1 million in 2025.
In total, the bulk of MARA’s holdings — 53,822 Bitcoin valued at approximately $4.7 billion at year-end — saw a fair-value decline of $301.2 million.
Borrowing Added Liquidity — and Leverage
At the same time, MARA leaned more heavily on collateralized borrowing.
As of Dec. 31, the company had pledged 5,938 Bitcoin to secure $350 million in outstanding credit facilities. With Bitcoin priced around $87,500 at year-end, the pledged collateral was worth about $519.6 million, implying a loan-to-value ratio of roughly 67.4%.
At a Bitcoin price of $68,000, the pledged 5,938 coins would be worth roughly $404 million, pushing the implied LTV to about 86.7% based on the $350 million balance — well above typical institutional margin thresholds of 70% to 75%. That suggests MARA may have already deployed more bitcoin to reduce the LTV to the required threshold.
Since 2026, as bitcoin tumbled below $70,000, MARA moved quickly to adjust its capital structure, repaying $150 million of its outstanding credit lines and entering into a new $150 million facility.
Also notably, MARA broadened its policy in 2026 to allow the sale of Bitcoin from its balance sheet, beyond just current mining production.
That flexibility appears tied to expansion plans. In January, MARA acquired a 42-megawatt operational data center in central Nebraska for $25 million in cash from Mining of the West, LLC. In February, it closed a $174.5 million cash acquisition of a controlling interest in Exaion, expanding into high-performance computing and AI infrastructure.
