Bitcoin mining stocks showed impressive strength in September, with Bitfarms and Cipher Mining leading the charge. Both companies saw significant increases, outpacing even Bitcoin’s performance by a wide margin.
Throughout September 2025, Bitcoin mining stocks experienced substantial gains. While Bitcoin saw a decrease of over 3%, top mining firms like Bitfarms (NASDAQ: BITF) and Cipher Mining (NASDAQ: CIFR) posted gains ranging from 44% to 138%. This positive trend highlights strong investor interest in publicly traded Bitcoin mining operations. Learn more about Bitcoin mining.
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Bitfarms shares reached a peak of $3.20 on September 18th, marking a ten-day winning streak and more than doubling its value within a week. The stock closed at $3.19, with trading volume hitting almost 174 million shares, significantly exceeding the three-month average of around 37.2 million shares, according to Yahoo! Finance data.
September trading figures reveal that Bitfarms stock increased by over 132% from its opening price of $1.34 to approximately $3.18. The company’s market capitalization has surged to roughly $1.769 billion, representing a more than 94% rise from its closing valuation at the close of 2024.
Earlier this year, Bitfarms finalized the sale of a Bitcoin mining facility located in Paraguay to Hive Digital. Furthermore, they announced the sale of 1,052 Bitcoin in August 2025, indicating a substantial amount of liquid assets currently held by the company. Blockspace reports a recent re-evaluation of the Panther Creek site production, in addition to an agreement with T5 Data Centers regarding campus development. These developments may be contributing to the company’s strong stock performance.
Cipher Mining shares increased by roughly 40% during September, reaching new 52-week highs at $12.66. Yahoo! Finance data shows the company’s shares have generated an impressive 313% return over the last six months, positioning it as a prime beneficiary of the expanding AI infrastructure sector.
Recent trading data indicates that CIFR saw average daily trading volumes of 35.4 million shares in September. The stock closed at $11.85 with a market capitalization of $4.66 billion, reflecting strong institutional investment and confidence in its combined mining and high-performance computing strategy.
Cipher Mining provided an operational update on September 4, highlighting increased production capacity. CEO Tyler Pager also suggested a potential major deal by the end of 2025, possibly related to Bitcoin mining or a shift toward artificial intelligence technologies.