Bitcoin mining production slips in June for CleanSpark, BitFuFu and Canaan

Publicly traded bitcoin miners CleanSpark, BitFuFu and Canaan reported lower bitcoin production in June compared with the prior month, though the declines stemmed from different operational factors.

CleanSpark mined 614 bitcoins during June, down from 671 in May. BitFuFu produced 125 bitcoins compared with 177 the previous month, while Canaan mined 64 bitcoins versus 90 in May.

Shares of CleanSpark (CLSK) climbed 7.7% to $13.30 on Tuesday, mostly driven by the company's separate announcement of a $6.6 billion, 20-year lease for its Sandersville, Georgia, AI data center campus. BitFuFu (FUFU) gained 6% to $1.42, while Canaan (CAN) fell 1.5% to $0.30.

The weaker production reports came despite bitcoin mining difficulty dropping more than 10% in mid-June to its lowest level of 2026. It was the second-largest downward adjustment of the year, reducing the computational power needed to mine new blocks.

Meanwhile, bitcoin (BTC) recovered to over $64,200 after falling to roughly $57,800 near the end of June, its lowest level in nearly two years.

Softer bitcoin mining production

CleanSpark's monthly bitcoin output fell about 9% while its average operating hashrate dropped from 46 exahash per second (EH/s) in May to roughly 43 EH/s in June. The company closed June with 13,924 bitcoin, making it the 11th-largest publicly traded bitcoin holder.

BitFuFu's production dropped around 29% while its total hashrate dipped from May's 19.5 EH/s to 15 EH/s in June. The company said the drop primarily reflected lower managed hashrate, though it continued to expand its self-owned fleet, increasing self-owned hashrate to 3.5 EH/s after deploying 1,200 additional S21 XP miners during the month. It also signed agreements to deploy another 2,000 rigs in July and secured 5.3 EH/s of contracted hashrate starting in August.

Canaan also saw production fall about 29%, which it partly attributed to power grid maintenance at one of its mining sites. Meanwhile, its Texas joint venture recovered from wildfire disruptions that bogged down production in May. Canaan also added 49 bitcoin to its treasury, ending June with a record 1,915 BTC alongside 3,9532 ETH.