Bitcoin miner Marathon Digital Holdings, commonly known as MARA, reported a sharp swing from profit to a large net loss in the second quarter of 2026, even as it achieved its highest quarterly Bitcoin production in more than a year. The company’s results underscore how tightly miners remain tied to Bitcoin’s market price—especially when the accounting reflects changes in the fair value of Bitcoin held on balance sheets.

In its Q2 2026 SEC Form 10-Q, MARA said it recorded a net loss of $611.3 million, or $1.60 per diluted share, compared with net income of $808.2 million, or $1.84 per diluted share, in the second quarter of 2025. According to the filing, MARA mined 2,422 Bitcoin in the quarter, up 3% year over year, but that increase was more than offset by a 28% decline in the average Bitcoin price.

Key takeaways

MARA posted a $611.3 million Q2 net loss, with the decline largely attributed to changes in the value of its Bitcoin holdings.
Bitcoin production rose to 2,422 BTC in Q2 2026, but the revenue impact was overwhelmed by a 28% drop in the average Bitcoin price.
As of June 30, MARA held 35,577 Bitcoin valued at $2.1 billion, placing it fourth among public Bitcoin holders cited in the company’s reporting context.
The company used the quarter to restructure its power portfolio and capital position, while pushing further into AI and high-performance computing (HPC) infrastructure.
MARA is targeting at least two AI/HPC data center lease signings by year-end, alongside additional Texas and Ohio expansion plans.

Profit-to-loss driven by Bitcoin’s price and holding valuation

The headline shift in MARA’s second-quarter performance is stark: profit in Q2 2025 gave way to a net loss in Q2 2026. In its 10-Q, MARA attributes the swing primarily to the impact of Bitcoin price movement on the accounting value of Bitcoin it holds, rather than to a deterioration in mining output.

That distinction matters for how investors interpret miner fundamentals. Production volumes increased, but the company’s overall earnings were pressured by weaker realized economics tied to Bitcoin’s price environment. Put simply, even better operational throughput did not translate into higher net earnings when the fair-value effects and average pricing moved against the company.

During an earnings call on Thursday, MARA CFO Salman Khan said, according to the company’s remarks, that “Two things defined Q2 for MARA. Bitcoin prices created a challenging revenue environment [and] we used the quarter to fundamentally transform our power portfolio and capital structure.”

Higher output, weaker average price

MARA’s mining performance in Q2 2026 was comparatively strong on the operational side. The company mined 2,422 Bitcoin, about 3% more than the year-ago quarter. However, the average Bitcoin price fell 28% over the same comparison period, which directly undermined revenue tied to the mined BTC and other Bitcoin-linked line items.

This is a recurring tension in the miner model: when BTC prices move lower, output growth can be muted by pricing and valuation effects. MARA’s quarter illustrates that point—production strength alone was not enough to counteract the market-driven decline in average pricing.

Beyond the mining figures, the company’s Bitcoin balance sheet also remained significant. As of June 30, MARA reported total holdings of 35,577 Bitcoin with a total fair value of $2.1 billion, reflecting both continued treasury accumulation and the sensitivity of the financial statements to BTC valuation changes. In that snapshot, the company was described as the fourth-largest public Bitcoin holder after Strategy, Twenty One Capital and Metaplanet.

MARA presses ahead with AI and HPC infrastructure deals

While mining remains central to MARA’s business, the company continues to frame its longer-term growth around expanding computational infrastructure for AI and high-performance workloads. Earlier in 2026, it acquired a majority stake in Exaion SaS, which operates high-performance computing data centers and secure cloud and AI infrastructure.

MARA also moved to accelerate data center development through partnerships. In February, it announced a strategic partnership with Starwood Capital Group and Starwood Digital Ventures aimed at enabling conversion of select MARA sites to meet demand from “enterprise, hyperscale and AI customers.”

On Thursday, MARA reiterated that it is pursuing near-term commercial milestones tied to those plans. The company said it is targeting at least two AI/HPC lease signings by year-end. CEO Fred Thiel said, according to the earnings call, that lease discussions are progressing across multiple sites and that MARA remains confident it can sign at least two leases before year-end.

Texas land plans and Ohio energy acquisition expand the runway

MARA’s infrastructure buildout includes both new land and additional power resources. In July, the company agreed to acquire a 1,200-acre powered site in Matagorda County, Texas, with expected access to up to 2 gigawatts of grid capacity by April 2028. MARA said the site is intended for AI and HPC workloads as well as Bitcoin mining.

The company also continues to pursue power capacity through a pending acquisition of Long Ridge Energy & Power in Ohio. MARA described the $1.5 billion deal as a potential source of up to 600 megawatts of AI and critical-IT load over time, indicating that it views energy access as a key enabler for both traditional mining operations and new revenue streams linked to enterprise computing.

Mining still the core—AI described as a complement, not a replacement

In a shareholder letter released alongside its quarterly results, Thiel said that Bitcoin mining remains the foundation of MARA’s business and that the cash flow generated by mining will continue to support other investments.

He also pushed back on the notion that MARA is shifting away from mining. “Ultimately, we do not view Bitcoin mining and AI infrastructure as competing businesses,” Thiel said, according to the letter. He further emphasized a capital allocation principle focused on deploying each megawatt into what he described as its highest-value application—sometimes mining in certain markets, and in others AI infrastructure, sovereign cloud, or enterprise computing.

For readers tracking MARA, the key question is how quickly these AI/HPC efforts can contribute stable cash flows that are less dependent on Bitcoin’s spot price. Near-term, the company’s targets—like at least two AI/HPC lease signings by year-end—will offer a clearer datapoint on whether the operational transformation hinted at in Q2 can translate into measurable commercial traction. Investors will also want to watch how future quarters reflect both mining output and the impact of Bitcoin price moves on the valuation of holdings, since that remains the dominant factor in the recent earnings swing.