Bitcoin Mining Stock Worth $4 Billion Loses $360 Million in a Day

Cleanspark Inc. (NASDAQ: CLSK) recently closed 9.26% lower at $12.44 on the Nasdaq, pulling its market capitalization down to about $3.18 billion. In a single session, roughly $270 million in market value was wiped out, with trading volume reaching approximately 26.1 million shares.

On the 6th of this month, the company released its December 2025 Bitcoin mining update, reporting that annual Bitcoin production rose more than 10% year over year and that it is ramping up AI data-center infrastructure in Georgia and Texas. Mid-month, Cleanspark announced an agreement to secure a site in Brazoria County, Texas, for an AI and high-performance computing data center of up to 600 MW, which sent its share price sharply higher. Northland Capital has since maintained an Outperform rating with a $22.50 price target.

Cleanspark is a major pure-play Bitcoin miner operating its own data centers across the United States, with roughly 1.4 GW of power, land, and data-center assets. Leveraging its Bitcoin-mining infrastructure and large-scale power contracts, the company is pursuing aggressive expansion into AI and HPC data centers, recently issuing $1.15 billion of interest-free convertible notes to fund that growth.