One of Bitcoin’s biggest public miners is handing in its ASIC keys. On its Q3 2026 earnings call, Core Scientific exits Bitcoin mining by year-end became official company guidance: the self-mining fleet winds down through the fourth quarter, and 2027 begins with Core Scientific as a pure-play, high-density colocation provider for AI and high-performance computing.
“We expect to complete our exit from Bitcoin mining by year end,” CEO Adam Sullivan told analysts. CFO Jim Nygaard filled in the fine print: “We expect to complete the wind-down during the fourth quarter and enter 2027 as a pure-play, high-density colocation provider.”
Why Core Scientific exits Bitcoin mining now
The numbers make the case without a PowerPoint. In the quarter ended September 30, colocation revenue hit $215.4 million – up roughly 60% sequentially and about 92% of the company’s $232.9 million total. Hosted mining contributed just $5.2 million, while self-mining ran a $7.5 million gross loss. Colocation gross profit was $128.4 million at a 60% margin; adjusted EBITDA reached $133.6 million, a 57% margin, up from 25% a year earlier. The mining fleet has already been cut nearly 50%, and digital-asset holdings shrank to $2.7 million from $49.7 million a quarter earlier – and $222 million at the end of 2025.
The AI contracts carrying the transition
CoreWeave anchors the pivot: 590 MW contracted under a deal expanded to $10.2 billion over 12 years, with about 350 MW energized and 485 MW billing as of September 30. An AMD-backed agreement adds 530 MW across five campuses, initial delivery in H1 2027 and full delivery by end-2028.
The company isn’t alone in the conversion. CoinShares estimates listed Bitcoin miners could draw up to 70% of revenue from AI/HPC by the end of 2026, versus roughly 30% at the start of the year – the fastest corporate pivot since gas stations discovered coffee.
What it means for the mining sector
Core Scientific’s exit completes the transformation investors have been pricing for two years: the miner that emerged from Chapter 11 in 2024, signed the CoreWeave mega-deal in 2025, and now walks away from mining entirely. Bitcoin’s security budget loses a large public miner; the AI compute market gains a 1 GW-plus operator with power contracts other builders can only envy.
For shareholders, the message is simple: this is no longer a Bitcoin mining company with an AI side hustle. It’s an AI data-center business that has finally run the numbers.
