The stock prices of four prominent Bitcoin mining companies were among the biggest losers on the U.S. stock market on “Black Thursday” on February 5, 2026. This day was marked by a drop in the price of Bitcoin (BTC) of over 10%.
On the day, the digital currency closed below $66,000, hitting an intraday low near $60,000. This directly impacted the valuation of these companies with high exposure to digital assets.
Clean Spark Company (CLSK) Recorded the largest contraction among mining companies, down 19.13%.which ended at $8.27 per share. MARA Holdings (MARA) followed, dropping 18.72% to close at $6.73.
Meanwhile, Canada’s Hut 8 (HUT) fell 17.89% to $44.48. On the other hand, Iris Energy (IREN) fell 14.68% on the day, falling below $40.
MARA has seen its share price decline by more than 59% and, as of this writing, is on Yahoo Finance’s list of 25 companies that have fallen the most in a 52-week range.
The decline in the stock price of one of the major US Bitcoin miners reflects the moment the sector is facing. It was affected by the prolonged decline in BTC price from its all-time high in October 2025.
Other companies in this sector such as Strategy Inc (MSTR) seem to have dropped significantly by around 60% over the past 52 weeks, according to data verified by CriptoNoticias as of February 6, 2026.
The company is known for Large-scale financial strategy for Bitcoin (650,000-700,000 BTC+)suffered from extreme volatility that correlates with the decline in BTC in 2026, reaching its lowest value for the year.
Bitcoin’s collapse was framed in the context of overall market weakness. The digital currency was down 11.56% in the week ending February 5th.
In the same session, the S&P 500 index fell 1.23% and the Nasdaq index fell 1.59%. Similarly, liquidations were recorded on leveraged positions, resulting in $3.2 billion in realized losses in Bitcoin, highlighting downward pressure. U.S. Bitcoin exchange-traded funds also reflected this trend, with net outflows of $434 million.
The current situation poses special challenges for Bitcoin mining companies. According to a report by CriptoNoticias, these companies face high fixed costs associated with acquiring energy and equipment, which reduces profitability when BTC prices fall.
For example, CleanSpark operates 11 facilities with a capacity of 20 exahash per second, and Hut 8 manages nine sites with a focus on energy infrastructure. Therefore, the sensitivity of this sector to Bitcoin price fluctuations is direct and significant.
