Production costs rose modestly as competition intensified and high-performance computing (HPC) investments expanded, the analysts said. IREN and Cipher had the lowest power costs per bitcoin mined at roughly $29,000 and $31,200, while MARA’s (MARA) were the highest at about $56,200. On a fully loaded basis (power plus cash SG&A), IREN and CleanSpark (CLSK) led with costs near $54,000 and $60,000 per coin, compared with Riot’s (RIOT) $81,000. Bitcoin averaged around $98,500 in the quarter, leaving most operators profitable.
JPMorgan said miners also accelerated fundraising, issuing about $590 million in new equity, up sharply from the first quarter, with much of it flowing to HPC projects. IREN raised $263 million to complete its 50-exahash expansion and begin building a 75MW liquid-cooled data center called Horizon 1. Total capex across the group reached about $900 million, below late-2024 peaks but rising sequentially.
Miners collectively spent a record $2.1 billion on energy, the analysts estimated, while gross profits held steady at roughly $2.1 billion, with margins near 53%.
The bank said bitcoin’s strength and improving efficiency continued to offset network growth, sustaining profitability even amid escalating competition.
Read more: Bitcoin Miners' Market Cap Hit a Record in September: JPMorgan