CleanSpark (Nasdaq: CLSK) wrapped up September 2025 with a treasury holding of 13,011 Bitcoin, showcasing notable improvements in both production and operational efficiency compared to the same time last year. The company mined 629 BTC during the month — a 27% increase over September 2024 — and sold 445 BTC for approximately $48.7 million, averaging a price of $109,568 per Bitcoin.
CleanSpark Sees 26% Jump in Fleet Efficiency and Expanding Hashrate
As part of its latest performance update, CleanSpark highlighted a 26% increase in fleet efficiency. The company also reported an average operating hashrate of 45.6 EH/s for September, reflecting its ongoing investment in high-performance mining infrastructure. These gains are part of a broader effort to scale sustainably and profitably, even amid increasing operational challenges in the mining sector.
Since April, CleanSpark has been strategically selling a portion of its monthly Bitcoin production to strengthen its financial independence. This measured approach has been further supported by the launch of an institutional trading desk, enabling the company to better manage its BTC liquidity and market presence.
Stock Rises Over 5% After Monthly Report, Despite Industry Headwinds
Following the release of its September performance figures, CleanSpark’s stock on the Nasdaq climbed 5.28%, contributing to a weekly gain of over 23%. The strong investor response underscores confidence in the company’s strategic direction and its ability to scale operations in a volatile market.
However, the broader crypto mining industry continues to face significant pressures. Rising energy costs and potential U.S. tariffs on imported mining rigs could impact operational costs across the board. CleanSpark, in particular, is dealing with potential liabilities of up to $185 million due to ongoing allegations related to the origin of its mining equipment.
Despite these headwinds, CleanSpark’s improved efficiency, growing BTC reserves, and proactive financial strategies position it as a leading player in the evolving crypto mining landscape.
