Leading Bitcoin mining companies MARA Holdings and CleanSpark have reported disappointing quarterly financial results, reflecting the post-halving squeeze that has compressed mining economics industry-wide even as operators increasingly pivot toward artificial intelligence and high-performance computing infrastructure to diversify revenue.

Revenue Falls Sharply at Both Firms

MARA disclosed second-quarter 2026 revenue totaling $174.9 million, marking a 27% decrease from the $238.5 million generated during the same quarter last year. CleanSpark announced third fiscal quarter revenue of $138 million, down 30.5% compared to the $198.6 million recorded in the prior-year period.

MARA, the largest publicly traded Bitcoin miner, reported a 29% year-over-year decline in its Bitcoin holdings to 35,577 BTC in Q2 2026. Revenue fell 27% to $175… pic.twitter.com/NTzZcFdDZS — Wu Blockchain (@WuBlockchain) August 7, 2026

The declines come more than two years after the April 2024 Bitcoin halving cut block subsidies from 6.25 to 3.125 BTC, structurally reducing the revenue available to miners for the same expenditure on power and hardware. With network hashrate continuing to climb as more efficient machines come online, individual miner revenue per unit of computing power—commonly tracked as hashprice—has remained under sustained pressure.

Financial Losses Widen

MARA's net losses expanded significantly, reaching $611.3 million compared to net income of $808.2 million during the same quarter last year. The company attributed much of this deterioration to a $343 million fair-value write-down on its digital asset holdings. Its adjusted EBITDA reversed dramatically, swinging from a $1.2 billion profit to a $360.9 million loss.

CleanSpark reported a net loss of $239.8 million, contrasting sharply with the $257.4 million in net income achieved during the previous year's comparable period. The company's adjusted EBITDA flipped from a positive $377.7 million to a negative $113 million.

For both companies, the results underscore how mark-to-market accounting rules for Bitcoin treasuries can amplify reported swings: when Bitcoin prices fall, miners holding large reserves see paper losses flow directly into earnings, compounding the operational pressure from thinner mining margins.

Operational Metrics and Bitcoin Holdings

During the quarter, MARA successfully mined 2,422 Bitcoin at an approximate average market price of $71,325. The company's energized hashrate increased 22% year-over-year, reaching 70.3 EH/s. MARA currently maintains holdings of 35,577 Bitcoin, valued at approximately $2.1 billion, securing its position as the fourth-largest corporate Bitcoin holder globally.

CleanSpark's Bitcoin treasury stood at 13,924 coins as of June 30, placing it eleventh among publicly traded companies. The firm also maintained $202.6 million in cash reserves alongside total assets valued at $2.7 billion.

The contrast between rising hashrate and falling revenue highlights the core tension facing miners post-halving: deploying more computing power to protect market share while each unit of hashrate generates less income than it did before the subsidy reduction.

AI Infrastructure Strategies Advance as Market Enthusiasm Cools

Despite the financial challenges, both mining firms continue advancing their AI infrastructure strategies. MARA is moving forward with finalizing its Long Ridge acquisition, anticipated to contribute immediate positive EBITDA while expanding operational capacity at its Hannibal facility. The company also secured an additional 2 GW of capacity through a new site in Matagorda County, Texas.

CleanSpark announced a substantial 20-year lease agreement valued at $6.6 billion for its Sandersville facility, partnering with what the company characterized as a high investment-grade client.

The strategic logic is straightforward: Bitcoin mining sites already possess the large-scale power access, grid connections, and cooling infrastructure that AI data center operators need, potentially allowing miners to redirect existing assets toward higher-margin computing workloads.

However, market enthusiasm for AI-related announcements has noticeably diminished. Research conducted by Blocksbridge Consulting examined 25 AI and HPC partnership announcements made between June 2024 and August 2026. The analysis revealed that average same-day stock price increases declined from approximately 24% for initial deals to roughly 10% for more recent announcements.

Initial deals generated exceptional market responses. Core Scientific's inaugural CoreWeave hosting partnership propelled its stock price upward by more than 40%. TeraWulf's first Fluidstack agreement generated a nearly 60% surge in share value.

By contrast, recent announcements have produced more modest market reactions. TeraWulf's 401-megawatt lease agreement with Anthropic resulted in approximately 5% share price appreciation. CleanSpark's $6.6 billion AI hosting arrangement generated roughly 9% gains.

The TEM AI Infrastructure Growth Index, which monitors companies developing AI data center capabilities, has declined approximately 28.5% from its June peak. The Philadelphia Semiconductor Index has similarly fallen nearly 17% since reaching its July high.

MARA CEO Fred Thiel emphasized that the company intends to engage across various segments of the AI infrastructure value chain while maintaining disciplined capital allocation practices.