New York, Jan 6, 2026, 14:58 EST — Regular session
- CleanSpark shares fell about 4% in afternoon trade after the miner posted its December operating update.
- The company said it mined 622 bitcoin in December and sold 577 bitcoin, while bitcoin prices dipped on the day.
- Investors are watching bitcoin prices and CleanSpark’s early-February earnings window for clearer margin signals.
CleanSpark (CLSK.O) shares were down 54 cents, or 4.4%, at $11.76 on Tuesday after the bitcoin miner released its unaudited December operating update. The stock touched $12.60 earlier in the session and slid as low as $11.27.
The report lands as crypto-linked equities swing with bitcoin’s price, which was down about 2.3% at around $92,051. For miners, moves in bitcoin matter because they earn bitcoin for validating transactions, and a lower token price can squeeze revenue even if output holds steady.
CleanSpark said it produced 622 bitcoin in December and 7,746 for calendar 2025. It reported an operating hashrate — a measure of computing power — of 50.0 exahashes per second and average operating hashrate of 47.2 EH/s, alongside a fleet efficiency of 16.07 joules per terahash, which measures energy used per unit of work.
The company also said it sold 577 bitcoin for $51.5 million in proceeds at an average price of $89,210, and ended December with total bitcoin holdings of 13,099. Chief executive Matt Schultz said the company grew bitcoin production more than 10% year over year despite “ongoing network difficulty increases,” a reference to the network’s built-in mechanism that makes mining harder as more computing power comes online.
CleanSpark pointed to a brief power curtailment in Tennessee during a cold-weather demand spike, saying it powered down operations across 11 sites within 10 minutes at the Tennessee Valley Authority’s request. That kind of “demand response” can help utilities stabilize the grid, but it can also temporarily reduce a miner’s output when power is scarce.
Peers were mixed on the day. Marathon Digital (MARA.O) fell about 3%, Riot Platforms (RIOT.O) was little changed, and Core Scientific (CORZ.O) rose about 2%.
Investors are also tracking CleanSpark’s push beyond mining into AI data centers, which the company framed as a longer-term growth lever tied to securing power, building out sites and signing tenants. In Tuesday’s update, it reiterated recent steps such as partnerships and power-site positioning to support that buildout.
But the stock’s path remains tied to volatile inputs that the company cannot control. A deeper bitcoin slide, higher network difficulty, or more frequent curtailments could pressure margins, while the pace of tenant signings for AI-related capacity will shape how quickly that diversification contributes to cash flow.
