U.S. bitcoin miner Cleanspark delivered a stellar second-quarter performance in 2025, with revenue hitting $198.6 million (up 90% year-over-year) and net income surging to $257.4 million, or $0.90 per basic share. This contrasts sharply with a net loss of $236.2 million in the same period last year. Management hailed it as "the most successful quarter in CleanSpark's history."
Financial Highlights: Record Quarter
CEO Zach Bradford stated: "This quarter reflects the strength of our strategy, the discipline of our execution, and the tireless commitment of our team." He noted that the company reached 50 EH/s of operational hashrate in June, becoming the first public company to do so exclusively with U.S.-based infrastructure. CleanSpark's bitcoin treasury value now exceeds $1 billion, achieved without any equity capital raises since November 2024. The firm now manages about 5.8% of global Bitcoin hashrate and has over 1 GW of contracted power.
Tariff Storm: $185M Dispute
Despite the strong financials, Cleanspark faces a significant tariff bill from the U.S. Customs and Border Protection (CBP). The CBP claims that mining equipment imported between April and June 2024 originated from China and demands $185 million in duties. CleanSpark stated in a filing: "The company believes the CBP's allegation regarding the Chinese origin of its imported miners is unfounded and intends to vigorously defend against these charges." If the CBP prevails, the tariff could be applied retroactively to all miners imported since April 2024, potentially increasing the overall liability.
Another publicly listed miner, IREN, is facing a similar $100 million tariff bill from the CBP over imports from April 2024 to February 2025. Both companies are contesting the claims and preparing legal defenses.
Market and Industry Impact
Cleanspark's strong earnings boosted investor sentiment for mining stocks, but the tariff dispute casts a shadow over the sector. Analysts warn that if the CBP expands its scrutiny, other U.S. miners relying on Chinese-made hardware could be affected. Cleanspark shares rose over 5% post-earnings, while the market awaits further developments in the tariff litigation.